DISPLAY APPARATUS

A display apparatus includes: a plurality of displays in which a plurality of light emitting devices which emit irradiation light of one of an R component, a G component, and a B component are arrayed, wherein with reference to arbitrary 3×3 light emitting devices among the arrayed light emitting devices, the color components of the light emitting devices arrayed in the longitudinal direction are different from each other and the color components of the light emitting devices arrayed in the transverse direction are the same. 1. A display apparatus comprising:a plurality of displays in which a plurality of light emitting devices which emit irradiation light of one of an R component, a G component, and a B component are arrayed, wherein with reference to arbitrary 3×3 light emitting devices among the arrayed light emitting devices, color components of the light emitting devices arrayed in the longitudinal direction are different from each other and color components of the light emitting devices arrayed in the transverse direction are the same.2. The display apparatus according to claim 1 ,wherein the light emitting devices having different color components are disposed in same coordinates in the plurality of displays.3. The display apparatus according to claim 1 ,wherein P lines and N lines which apply voltage to the light emitting devices are wired in a lattice form.4. The display apparatus according to claim 3 ,wherein the light emitting devices are package type light emitting devices in which electrodes that apply voltage to light emitting chips are installed on an outer circumference.5. The display apparatus according to claim 4 ,wherein at least one of the P lines and the N lines is intermittently wired in the lattice form.6. The display apparatus according to claim 3 ,wherein the plurality of displays are rotatably driven and same positions in the respective displays are continuously viewed by a user.7. A display apparatus comprising:a plurality of displays in ...

CURRENT MIRROR CIRCUIT

A current mirror circuit duplicates an input current that flows through an input terminal, and outputs an output current via an output terminal. A first transistor, a second transistor, and a diode are sequentially arranged in series between a power supply terminal to which a fixed voltage is applied and an input terminal. A third transistor and a fourth transistor are sequentially arranged in series between the power supply terminal and the output terminal. The gate of the first transistor and the gate of the third transistor are connected to the drain of the second transistor. The gate of the second transistor and the gate of the fourth transistor are connected to the input terminal. 1. A current mirror circuit configured to duplicate an input current that flows through an input terminal , and to output an output current via an output terminal thereof , the current mirror circuit comprising:a first transistor, a second transistor, and a diode, sequentially arranged in series between a fixed voltage terminal to which a fixed voltage is to be applied and the input terminal; anda third transistor and a fourth transistor sequentially arranged in series between the fixed voltage terminal and the output terminal,wherein a gate of the first transistor and a gate of the third transistor are connected to a drain of the second transistor,and wherein a gate of the second transistor and a gate of the fourth transistor are connected to the input terminal.2. A driving circuit for a light emitting element , comprising:a first current source configured to generate a current that corresponds to a reference voltage;{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a current mirror circuit according to , configured to duplicate a current generated by the first current source;'}a resistor arranged on a path for an output current of the current mirror circuit; anda second current source configured to generate a driving current that corresponds to a voltage drop that occurs at the ...

CURRENT GENERATING CIRCUIT

A first current source generates a first current having positive temperature characteristics. A second current source generates a second current. A first current mirror circuit generates a third current by multiplying, by a first coefficient, the base current of a compensation transistor configured as an NPN bipolar transistor arranged on a path of the second current. A second current mirror circuit generates a fourth current that is proportional to the difference between the first current and the third current. A current generating circuit outputs the sum total of the fourth current and a fifth current that is proportional to the base current. 1. A current generating circuit comprising:a first current source configured to generate a first current having positive temperature characteristics;a second current source configured to generate a second current;a compensation transistor configured as an NPN bipolar transistor, and arranged on a path of the second current; anda first current mirror circuit configured to multiply a base current of the compensation transistor by a first coefficient so as to generate a third current,wherein the current generating circuit is configured to output a fourth current that is proportional to the difference between the first current and the third current.2. A current generating circuit according to claim 1 , wherein the first current mirror circuit is configured to multiply the base current of the compensation transistor by a second coefficient so as to generate a fifth current claim 1 ,and wherein, instead of the fourth current, the current generating circuit is configured to output a sixth current that is proportional to the sum of the fourth current and the fifth current.3. A current generating circuit according to claim 1 , wherein the first current source comprises:a first collector resistor, and a first transistor configured as an NPN bipolar transistor arranged such that the base and the emitter thereof are connected together, ...

CONTROL CIRCUIT FOR SWITCHING POWER SUPPLY

A control IC controls a switching power supply configured to supply a driving voltage Vout to one terminal of an LED string to be intermittently driven. In the on period of the LED string, a pulse modulator generates a pulse signal having a duty ratio adjusted such that a detection voltage Vthat corresponds to the output voltage Vout of the switching power supply matches a predetermined reference voltage Vref. A driver drives a switching transistor included in the switching power supply according to the pulse signal. After transition from the on period to the off period, the pulse modulator reduces the duty ratio of the pulse signal over time. 1. A control circuit for a switching power supply configured to supply a driving voltage to one terminal of a light emitting element to be intermittently driven , the control circuit comprising:a pulse modulator configured to generate a pulse signal having a duty ratio adjusted such that a detection voltage that corresponds to the output voltage of the switching power supply matches a predetermined reference voltage in an on period of the light emitting element; anda driver configured to drive a switching element included in the switching power supply, according to the pulse signal,wherein, after transition of the light emitting element from the on period to an off period, the pulse modulator reduces the duty ratio of the pulse signal over time.2. A control circuit according to claim 1 , wherein the pulse modulator comprises:a feedback terminal via which a phase compensation capacitor and a phase compensation resistor are to be connected;an error amplifier configured to generate a current that corresponds to the difference between the detection voltage and the reference voltage, and to supply the current thus generated to the feedback terminal, in the on period of the light emitting element;a pulse generator configured to receive a voltage that occurs at the feedback terminal, and to generate a pulse signal having a duty ratio ...

DISPLAY DEVICE

Provided is a display device including a housing whose side surface has one or more slits, and a display that is mounted in the housing and has a substantially arc shape, wherein an image displayed on the display is visually recognized beyond the slit when the housing rotates, and a curvature of the display having the substantially arc shape is formed so that stray light resulting from a specular reflection does not occur. 1. A display device comprising:a housing whose side surface has one or more slits; anda display that is mounted in the housing and has a substantially arc shape,wherein an image displayed on the display is visually recognized beyond the slit when the housing rotates, anda curvature of the display having the substantially arc shape is formed so that stray light resulting from a specular reflection does not occur.2. The display device according to claim 1 , wherein claim 1 , when a spot at which light emitted from an arbitrary spot s on the display is subjected to specular reflection is defined as a claim 1 , a center of the arc of the display is defined as b claim 1 , a center of the slit is defined as c claim 1 , an angle formed by spots s claim 1 , a claim 1 , and b is defined as α claim 1 , and an angle formed by spots b claim 1 , a and c is β claim 1 , α>β is always satisfied.3. The display device according to claim 2 , further comprising:a support member that supports the display,wherein a reflection reduction sheet is attached to the support member to reduce reflection of light, or a coating material is coated thereon.4. The display device according to claim 3 , wherein the housing has a cylindrical shape.5. The display device according to claim 4 , wherein the display having the substantially arc shape is configured to be same in number as the slits. The present disclosure relates to a display device, for example, to a display device in which a display is configured in an arc-shaped display by a large number of light emitting diodes (LEDs). ...

DISPLAY APPARATUS

A display apparatus includes: a cylindrical casing which is rotatably driven; and a plurality of curve-arranged displays which are installed inside the casing and have the same number as a plurality of slits formed in the casing, wherein the curve-arranged displays include a light housing which is an approximately semi-cylindrical column having a hollow structure, and a plurality of display device substrates installed on an arc-shaped side surface of the approximately semi-cylindrical column of the light housing. 1. A display apparatus comprising:a rotatably driven cylindrical casing; anda plurality of displays installed inside the casing and having a plurality of slits, the displays include a light housing having a hollow structure, anda plurality of display device substrates installed on a surface of the light housing.2. The display apparatus according to claim 1 ,wherein the plurality of display device substrates are installed in the form of fins on the arc-shaped side surface of the approximately semi-cylindrical column of the light housing.3. The display apparatus according to claim 1 ,wherein the display device substrate has an L-shaped cross-section, a display device driver is installed on a long side of the L shape, a display device is installed on a short side of the L shape, and the long side of the L shape is radially extended from the arc-shaped side surface of the approximately semi-cylindrical column of the light housing.4. The display apparatus according to claim 1 ,wherein a hole is formed in an upper surface of the approximately semi-cylindrical column of the light housing and a lower surface thereof.5. The display apparatus according to claim 1 ,wherein the display device substrate has a copper foil layer in a substrate portion which is the short side of the L shape in which the display device is installed.6. The display apparatus according to claim 1 ,wherein an attachment which attaches the display device substrate to the light housing is made of ...

COMPARATOR, OSCILLATOR USING THE SAME, DC/DC CONVERTER, CONTROL CIRCUIT THEREOF, AND ELECTRONIC APPARATUS

A comparator compares a first input voltage and a second input voltage to generate a comparative output depending on a result of the comparison. The comparator includes a first input terminal configured to receive the first input voltage, a second input terminal configured to receive the second input voltage, a differential pair including a first input transistor whose control terminal is connected with the first input terminal and a second input transistor whose control terminal is connected with the second input terminal, a tail current source configured to supply a tail current to the differential pair, and a load circuit connected to the first input transistor and the second input transistor, and the tail current source increases the tail current, as the first input voltage approaches the second input voltage, depending on the first input voltage. 1. A comparator comparing a first input voltage and a second input voltage to generate a comparative output depending on a result of the comparison , comprising:a first input terminal configured to receive the first input voltage,a second input terminal configured to receive the second input voltage,a differential pair including a first input transistor whose control terminal is connected with the first input terminal and a second input transistor whose control terminal is connected with the second input terminal,a tail current source configured to supply a tail current to the differential pair, anda load circuit connected to the first input transistor and the second input transistor, wherein the tail current source increases the tail current, as the first input voltage approaches the second input voltage, depending on the first input voltage.2. The comparator of claim 1 , wherein the tail current source includes:a first resistor provided between a first node and a fixed-voltage terminal, the first node being a common connection point of the first input transistor and the second input transistor, anda first variable ...

INSULATED SYNCHRONOUS RECTIFICATION DC/DC CONVERTER

A synchronous rectification controller configured to control a synchronous rectification transistor is provided on the secondary side of an insulated synchronous rectification DC/DC converter. A DRAIN pin receives the drain voltage Vof the synchronous rectification transistor. A pulse generator generates a pulse signal Sbased on the voltage at the DRAIN pin. A driver drives the synchronous rectification transistor based on the pulse signal S. Upon detecting an open-circuit fault of the DRAIN pin, an abnormality detection circuit asserts an abnormality detection signal S. 1. A synchronous rectification controller structured to control a synchronous rectification transistor of an insulated synchronous rectification DC/DC converter , the synchronous rectification controller comprising:a drain pin structured to receive a drain voltage of the synchronous rectification transistor;a pulse generator structured to generate a pulse signal based on a voltage at the drain pin;a driver structured to drive the synchronous rectification transistor based on the pulse signal; andan abnormality detection circuit structured to assert an abnormality detection signal when an open-circuit fault of the drain pin is detected.2. The synchronous rectification controller according to claim 1 , wherein the abnormality detection circuit is structured such that claim 1 , when no cyclic signal occurs at the drain pin claim 1 , and when the DC/DC converter generates an output voltage claim 1 , the abnormality detection signal is asserted.3. The synchronous rectification controller according to claim 1 , wherein the abnormality detection circuit is structured such that claim 1 , when the pulse signal is maintained at a constant value claim 1 , and when the DC/DC converter generates an output voltage claim 1 , the abnormality detection signal is asserted.4. The synchronous rectification controller according to claim 2 , wherein the abnormality detection circuit comprises a comparator structured to ...

ISOLATED SYNCHRONOUS RECTIFICATION-TYPE DC/DC CONVERTER

An external circuit element Ris connected in use to an SET terminal. A synchronous rectification controller generates a pulse signal Si based on a control time determined according to the state of the SET terminal. A driver switches on and off the synchronous rectification transistor according to the pulse signal S. An abnormal state detection circuit is capable of detecting an open-circuit state and/or a short-circuit state that can occur in the SET terminal. When the abnormal state detection circuit detects such an open-circuit state and/or short-circuit state, the abnormal state detection circuit asserts a detection signal S. When the detection signal S is asserted, a primary-side controller arranged on the primary side of the DC/DC converter is instructed to suspend the switching operation of a switching transistor. 121-. (canceled)22. A semiconductor apparatus comprising:a first terminal;a controller structured to generate a pulse signal according to a control time which is determined based on a state of the first terminal;a first driving circuit structured to output a driving signal according to the pulse signal;a detection circuit structured to detect an open-circuit state and/or a short-circuit state that can occur in the first terminal, and structured to generate a detection signal in response to a detection of the open-circuit state and/or the short-circuit state;a second terminal which is separate from the first terminal; anda second driving circuit structured to sink a current via the second terminal in response to the detection signal.23. The semiconductor apparatus according to claim 22 , wherein the second terminal is to be coupled to a gate of a synchronous rectification transistor.24. The semiconductor apparatus according to claim 22 , further comprising a third terminal claim 22 , wherein the controller is structured to generate the pulse signal according to a state of the third terminal.25. The semiconductor apparatus according to claim 24 , ...

INSULATED SYNCHRONOUS RECTIFICATION DC/DC CONVERTER

A first capacitor and an auxiliary power supply are provided to a secondary side of an insulated synchronous rectification DC/DC converter, in addition to a synchronous rectification transistor and a secondary-side controller. One end of the first capacitor is connected to a first node that connects the synchronous rectification transistor and a secondary winding. The auxiliary power supply charges the first capacitor using the voltage Vsupplied via the output line, so as to stabilize the voltage across the first capacitor. The ground voltage is supplied to the secondary-side controller via the first node. Furthermore, the power supply voltage is supplied to the secondary-side controller via the other end of the first capacitor. 1. A DC/DC converter configured as an insulated synchronous rectification DC/DC converter , the DC/DC converter comprising:a transformer comprising a primary winding and a secondary winding;an output line connected to a load;a switching transistor connected to the primary winding;a synchronous rectification transistor arranged between the secondary winding and the output line;a primary-side controller that drives the switching transistor;a secondary-side controller that drives the synchronous rectification transistor;a first capacitor having a first electrode connected to a first node that connects the secondary winding and the synchronous rectification transistor; andan auxiliary power supply that charges the first capacitor using a voltage supplied via the output line, so as to stabilize a voltage across the first capacitor,wherein a ground voltage is supplied to the secondary-side controller via the first node,and wherein a power supply voltage is supplied to the secondary-side controller via a second electrode of the first capacitor.2. The DC/DC converter according to claim 1 , wherein the auxiliary power supply comprises a first resistor arranged between the output line and the second electrode of the first capacitor.3. The DC/DC ...

INSULATION-TYPE SYNCHRONOUS DC/DC CONVERTER

Asynchronous rectifier controller is provided on a secondary side of an insulation-type synchronous DC/DC converter and controls the synchronous rectifier transistor. A driver circuit controls the synchronous rectifier transistor. A photo coupler connection terminal is coupled to an input side of the photo coupler. An error amplifier amplifies an error between a voltage detection signal according to an output voltage of the DC/DC converter and its target voltage, and to draw a current according to the error from an input side of the photo coupler via the photo coupler connection terminal. 1. Asynchronous rectifier controller provided on a secondary side of an insulation-type synchronous DC/DC converter , wherein the DC/DC converter comprises:a transformer having its primary winding and its secondary winding;a switching transistor coupled to the primary winding of the transformer;a synchronous rectifier transistor coupled to the secondary winding of the transformer;a photo coupler; anda primary controller coupled to an output of the photo coupler, and configured to control the switching transistor according to a feedback signal from the photo coupler, and wherein the synchronous rectifier controller comprises:a driver circuit for switching the synchronous rectifier transistor;a photo coupler connection terminal coupled to an input side of the photo coupler; andan error amplifier structured to amplify an error between a voltage detection signal according to an output voltage of the DC/DC converter and its target voltage, and to draw a current according to the error from an input side of the photo coupler via the photo coupler connection terminal, wherein the synchronous rectifier controller is packaged in a single module.2. The synchronous rectifier controller according to claim 1 , wherein a power supply plane for the error amplifier and a power supply plane for the driver circuit are isolated each other claim 1 , and a ground plane for the error amplifier and a ...

Insulation-type synchronous dc/dc converter

The feedback IC is provided at the secondary side of the DC/DC converter and is coupled to the photo coupler. The error amplifier amplifies an error between a voltage detection signal according to an output voltage of the DC/DC converter and a target voltage, and draws a current according to the error from the input side of the feedback photo coupler via the photo coupler connection terminal. The abnormal detection circuit asserts an abnormal detection signal when an abnormal condition in a secondary side of the DC/DC converter is detected. The protection circuit is coupled to the photo coupler connection terminal, and acts on the feedback photo coupler via the photo coupler connection terminal so that a feedback operation by the error amplifier is invalid and an on-period of the switching transistor is shorten.

INSULATING SYNCHRONOUS RECTIFYING DC/DC CONVERTER, SYNCHRONOUS RECTIFYING CONTROLLER, POWER SUPPLY USING THE SAME, POWER ADAPTER AND ELECTRONIC DEVICE, AND CONTROL METHOD OF SYNCHRONOUS RECTIFYING CONTROLLER

A synchronous rectifying controller on secondary side of insulating synchronous rectifying converter to control synchronous rectifying transistor, comprising: first comparator to compare drain voltage of the transistor with first negative threshold voltage, and assert set signal based on the comparison of them; second comparator to compare drain voltage with second negative threshold voltage, and assert reset signal based on the comparison of them; third comparator to compare drain voltage with third positive threshold voltage, and assert release signal based on the comparison of them; control circuit set in response to the assertion of the set signal and to adjust control pulse to have ON level, and reset in response to the assertion of the reset signal and to adjust the control pulse to have OFF level; and driver to drive the transistor, wherein set operation of the control circuit is inhibited until the release signal is asserted. 1. A synchronous rectifying controller disposed on a secondary side of an insulating synchronous rectifying DC/DC converter to control a synchronous rectifying transistor , comprising:a first comparator configured to compare a drain voltage of the synchronous rectifying transistor with a first negative threshold voltage, and when the drain voltage is lower than the first threshold voltage, assert a set signal;a second comparator configured to compare the drain voltage with a second negative threshold voltage, and when the drain voltage is higher than the second threshold voltage, assert a reset signal;a third comparator configured to compare the drain voltage with a third positive threshold voltage, and when the drain voltage is higher than the third threshold voltage, assert a release signal;a control circuit set in response to the assertion of the set signal and configured to adjust a control pulse as an output thereof to have an ON level indicating ON of the synchronous rectifying transistor, and reset in response to the assertion of ...

INSULATION-TYPE SYNCHRONOUS DC/DC CONVERTER

The synchronous rectifier controller is provided at the secondary side of the insulation-type synchronous DC/DC converter and controls the synchronous rectifier transistor. The controller is coupled to the output of the feedback photo coupler and drives the switching transistor according to the feedback signal. The synchronous rectifier controller includes a driver circuit and an abnormal detection circuit and is configured as a single module. The driver circuit drives the synchronous rectifier transistor. The abnormal detection circuit detects an abnormal condition in the secondary side of the DC/DC converter. FAIL terminal is coupled to notify outside of an occurrence of the abnormal condition. 1. A synchronous rectifier controller provided on a secondary side of an insulation-type synchronous DC/DC converter , wherein the insulation-type synchronous DC/DC converter supplies power to a load and comprises:a transformer having a primary winding and a secondary winding;a switching transistor coupled to the primary winding of the transformer;a synchronous rectifier transistor coupled to the secondary winding of the transformer;a feedback photo coupler; anda primary controller coupled to an output side of the feedback photo coupler, and structured to control the switching transistor according to a feedback signal from the feedback photo coupler;wherein the synchronous rectifier controller comprises:a driver circuit coupled to drive the synchronous rectifier transistor;an abnormal detection circuit structured to assert an abnormal detection signal when an abnormal condition in a secondary side of the DC/DC converter is detected; anda fail terminal for notifying outside of an occurrence of the abnormal condition, and wherein the synchronous rectifier controller is packaged in a single module.2. The synchronous rectifier controller according to claim 1 , wherein the fail terminal is coupled to the load.3. The synchronous rectifier controller according to claim 2 , wherein ...

Light emitting apparatus

A current driving circuit is connected to an LED terminal LED i , and generates an intermittent driving current I LEDi that corresponds to a dimming pulse signal PWM i . An error amplifier generates a feedback voltage V FB that corresponds to the difference between a detection voltage V LEDi and a predetermined reference voltage V REF . A pulse modulator generates a pulse signal having a duty ratio that corresponds to the feedback voltage V FB . A fault detection comparator COMP_OPEN i generates a fault detection signal OPEN_DET which is asserted when the detection voltage V LEDi is lower than a predetermined threshold voltage V OPEN — DET . A forced turn-off circuit instructs the current driving circuit to suspend the generation of the driving current I LEDi during a predetermined period after a switching power supply starts to operate. The fault detection circuit detects whether or not the fault detection signal OPEN_DET i has been asserted in a predetermined period.

CONTROL CIRCUIT FOR LIGHT EMITTING APPARATUS

An error amplifier amplifies the difference between a first detection voltage Vat a first detection resistor on a path of a driving current Iand a dimming control signal Vthat corresponds to the target luminance level of a light emitting element. A pulse width modulator generates a gate pulse signal according to an output Vof the error amplifier. M comparators each assert an overcurrent detection signal when a corresponding detection voltages Vor Vthat corresponds to voltage drop across detection resistors R or R exceeds a corresponding threshold voltage Vor V. Of the threshold voltages Vand V, at least one is set (i) to increase as the dimming control signal Vincreases when the dimming control signal Vexceeds a predetermined first value, and (ii) to a predetermined lower limit value when the dimming control signal Vis lower than the first value. 1. A control circuit used for a light emitting apparatus comprising a light emitting element and a switching power supply configured to supply a driving voltage to one end of the light emitting element , configured to control a switching transistor of the switching power supply , and to control a driving current that flows through the light emitting element , the control circuit comprising:a first detection resistor arranged on a path of the driving current;an error amplifier configured to amplify the difference between a first detection voltage that corresponds to a voltage drop across the first detection resistor and a dimming control signal having a level that corresponds to a target luminance level of the light emitting element, so as to generate a feedback voltage;a pulse modulator configured to generate a gate pulse signal having a duty ratio adjusted according to the feedback voltage;M (M represents an integer) detection resistors each provided to a current path of the light emitting apparatus that is to be a target of overcurrent protection;a voltage source configured to generate M threshold voltages that correspond ...

Switching converter, control circuit thereof, ac/dc converter, power adapter and electronic device

A control circuit used in a switching converter having a coil, a switching transistor, and a detection resistor, includes: a current detection terminal configured to receive a detection voltage obtained by superimposing a voltage detection signal on a current detection signal; a sample hold circuit configured to sample-hold the detection voltage in an OFF period of the switching transistor to generate a sample hold voltage; a variable amplifier configured to amplify a difference between the sample hold voltage and the detection voltage; a duty controller configured to generate a pulse modulation signal; a driver configured to control the switching transistor based on the pulse modulation signal; and an overcurrent protection circuit configured to compare the detection voltage with a predetermined threshold voltage and change the pulse modulation signal to an OFF level of a switching transistor when the detection voltage is identical to the predetermined threshold voltage.

Isolated dc/dc converter, primary side controller, power adapter, and electronic device

An isolated DC/DC converter includes a transformer having a first winding and a secondary winding, a switching transistor connected to the primary winding of the transformer, a rectifier element connected to the secondary winding of the transformer, a photocoupler, a feedback circuit configured to drive a light emitting element on an input side of the photocoupler by a forward current corresponding to an error between an output voltage of the DC/DC converter and a target voltage of the DC/DC converter, a conversion circuit configured to convert a collector current flowing in a light receiving element on an output side of the photocoupler into a feedback voltage having a negative correlation with the collector current, a pulse signal generator configured to generate a pulse signal corresponding to the feedback voltage, and a driver configured to drive the switching transistor depending on the pulse signal.

ISOLATED DC/DC CONVERTER, POWER SUPPLY DEVICE, POWER SUPPLY ADAPTOR, AND ELECTRONIC DEVICE USING THE SAME, AND FEEDBACK AMPLIFIER INTEGRATED CIRCUIT

An isolated DC/DC converter includes: a transformer having a primary winding and a secondary winding; a switching transistor connected to the primary winding of the transformer; a rectification element connected to the secondary winding of the transformer; a photo coupler; a feedback amplifier connected to an input side of the photo coupler and configured to generate an error current which increases as an output voltage of the DC/DC converter decreases; a primary side controller having a feedback terminal and configured to switch the switching transistor with a larger duty ratio as a voltage of the feedback terminal becomes higher; and a non-inversion type feedback circuit connected to the output side of the photo coupler and the feedback terminal and configured to increase the voltage of the feedback terminal as a feedback current flowing through the output side of the photo coupler increases. 1. An isolated DC/DC converter comprising:a transformer having a primary winding and a secondary winding;a switching transistor connected to the primary winding of the transformer;a rectification element connected to the secondary winding of the transformer;a photo coupler;a feedback amplifier connected to an input side of the photo coupler and configured to generate an error current which increases as an output voltage of the DC/DC converter decreases;a primary side controller having a feedback terminal and configured to switch the switching transistor with a larger duty ratio as a voltage of the feedback terminal becomes higher; andan non-inversion type feedback circuit connected to an output side of the photo coupler and the feedback terminal and configured to increase the voltage of the feedback terminal as a feedback current flowing through the output side of the photo coupler increases.2. The isolated DC/DC converter of claim 1 , wherein the non-inversion type feedback circuit includes a resistor placed between the feedback terminal and a ground claim 1 , andwherein the ...

INSULATED SYNCHRONOUS RECTIFICATION DC/DC CONVERTER

A synchronous rectification controller is arranged on the secondary side of an insulated synchronous rectification DC/DC converter. The synchronous rectification controller controls a synchronous rectification transistor M. An automatic shutdown circuit judges, based on the voltage Vacross the synchronous rectification transistor, whether the operation mode of a primary-side controller is a burst mode or a non-burst mode. When judgment has been made that the operation mode is the burst mode, the automatic shutdown circuit instructs a driver to suspend the switching of the synchronous rectification transistor M. 1. A synchronous rectification controller that is arranged on a secondary side of an insulated synchronous rectification DC/DC converter , and that controls a synchronous rectification transistor , the synchronous rectification controller comprising:a pulse generator that generates a pulse signal configured as an instruction to switch on and off the synchronous rectification transistor based on at least a voltage across the synchronous rectification transistor;a driver that switches on and off the synchronous rectification transistor according to the pulse signal; andan automatic shutdown circuit that judges, based on the voltage across the synchronous rectification transistor, whether a primary-side controller that controls a switching transistor at a primary side of the DC/DC converter is operating in a burst mode or a non-burst mode, and that instructs the driver to suspend switching of the synchronous rectification transistor when judgment is made that an operation mode of the primary-side controller is the burst mode.2. The synchronous rectification controller according to claim 1 , wherein claim 1 , when judgment has been made that the operation mode is the burst mode claim 1 , the automatic shutdown circuit shuts down at least a part of a circuit block thereof.3. The synchronous rectification controller according to claim 1 , wherein the automatic ...

ISOLATED DC/DC CONVERTER, POWER SUPPLY, POWER SUPPLY ADAPTOR, ELECTRONIC DEVICE USING THE SAME, AND PRIMARY SIDE CONTROLLER

An isolated DC/DC converter includes: a transformer having a primary winding and a secondary winding; a switching transistor connected to the primary winding of the transformer; a rectification element connected to the secondary winding of the transformer; a photo coupler; a feedback amplifier connected to an input side of the photo coupler and configured to generate an error current which increases as an output voltage of the DC/DC converter decreases; a primary side controller having a feedback terminal and configured to switch the switching transistor with a larger duty ratio as a feedback voltage of the feedback terminal becomes lower; and a feedback circuit connected to an output side of the photo coupler and the feedback terminal and configured to reduce the voltage of the feedback terminal as a feedback current flowing through the output side of the photo coupler increases. 1. An isolated DC/DC converter comprising:a transformer having a primary winding and a secondary winding;a switching transistor connected to the primary winding of the transformer;a rectification element connected to the secondary winding of the transformer;a photo coupler;a feedback amplifier connected to an input side of the photo coupler and configured to generate an error current which increases as an output voltage of the DC/DC converter decreases;a primary side controller having a feedback terminal and configured to switch the switching transistor with a larger duty ratio as a feedback voltage of the feedback terminal becomes lower; anda feedback circuit connected to an output side of the photo coupler and the feedback terminal and configured to reduce the voltage of the feedback terminal as a feedback current flowing through the output side of the photo coupler increases.2. The isolated DC/DC converter of claim 1 , wherein the primary side controller includes:a duty controller which generates a pulse signal with a larger time ratio of low level as the feedback voltage becomes higher ...

INSULATED SYNCHRONOUS RECTIFICATION DC/DC CONVERTER

In a first state, a multiplexer selects a voltage at a first drain pin. In a second state, the multiplexer selects a voltage at a second drain pin. A pulse generator generates a pulse signal Sbased on an output voltage Vof the multiplexer. In the first state, the driving circuit switches on and off a first synchronous rectification transistor according to the pulse signal S. In the second state, the driving circuit switches on and off a second synchronous rectification transistor according to the pulse signal S. A phase controller switches the state between the first state and the second state. 1. A synchronous rectification controller for an insulated synchronous rectification DC/DC converter , comprising:a first gate pin to be coupled to a gate of a first synchronous rectification transistor;a first drain pin to be coupled to a drain of the first synchronous rectification transistor;a second gate pin to be coupled to a gate of a second synchronous rectification transistor;a second drain pin to be coupled to a drain of the second synchronous rectification transistor;a source pin to be coupled to a ground;a multiplexer structured to select a voltage applied to the first drain pin in a first state, and to select a voltage applied to the second drain pin in a second state;a pulse generator structured to generate a pulse signal based on an output voltage of the multiplexer;a driving circuit structured to switch on and off the first synchronous rectification transistor according to the pulse signal in the first state, and to switch on and off the second synchronous rectification transistor according to the pulse signal in the second state; anda phase controller structured to switch a state between the first state and the second state.2. The synchronous rectification controller according to claim 1 , wherein the driving circuit comprises:a first driver structured to drive the first synchronous rectification transistor;a second driver structured to drive the second ...

ISOLATED SYNCHRONOUS RECTIFICATION-TYPE DC/DC CONVERTER

A secondary controller drives a light emitting element of a photocoupler such that a detection voltage Vcorresponding to an output voltage Vgenerated in an output capacitor C approximates to a reference voltage V. A primary controller controls a switching transistor M according to a feedback signal V. A protection circuit is activated and drives the light emitting element of the photocoupler when detecting an abnormal state. An auxiliary power supply circuit includes a power supply capacitor C provided separately from the output capacitor C and supplies a power supply voltage Vto the protection circuit and an anode of the light emitting element of the photocoupler. 1. An isolated synchronous rectification-type DC/DC converter comprising:a transformer having a primary winding and a secondary winding;a switching transistor coupled to the primary winding of the transformer;an output capacitor coupled to be charged by a current flowing in the secondary winding of the transformer;a photocoupler having a light emitting element and a light receiving element;a feedback circuit structured to drive the light emitting element of the photocoupler such that a detection voltage corresponding to an output voltage generated in the output capacitor approximates to a reference voltage;a primary controller coupled to the light receiving element of the photocoupler and structured to control the switching transistor corresponding to a feedback signal based on a state of the light receiving element;a protection circuit structured to be activated and to drive the light emitting element when detecting an abnormal state; andan auxiliary power supply circuit having a power supply capacitor provided separately from the output capacitor and structured to supply a power supply voltage generated in the power supply capacitor to the protection circuit and an anode of the light emitting element of the photocoupler.2. The DC/DC converter according to claim 1 , wherein an abnormality detection ...

POWER SUPPLY CONTROL DEVICE AND LLC RESONANT CONVERTER

A power control device for controlling driving of an LLC resonant converter including a first switching element to one end of which an input voltage is applied, a second switching element of which one end is connected to the other end of the first switching element, and a primary winding and a resonant capacitor connected in series between a first connection node at which the first and second switching elements are connected together and the other end of the second switching element includes an on-timing controller that detects variation of a switching voltage detection signal based on a switching voltage appearing at the first connection node rising up to the input voltage and falling down to 0 V and that, based on the result of the detection, generates a high-side on-signal for turning on the first switching element and a low-side on-signal for turning on the second switching element. 1. A power control device for controlling driving of an LLC resonant converter including:a first switching element to one end of which an input voltage is applied;a second switching element of which one end is connected to another end of the first switching element; anda primary winding and a resonant capacitor connected in series between a first connection node at which the first and second switching elements are connected together and another end of the second switching element, to detect variation of a switching voltage detection signal based on a rise of a switching voltage appearing at the first connection node up to the input voltage and a fall of the switching voltage down to 0 V and', 'to generate, based on a result of the detection, a high-side on-signal for turning on the first switching element and a low-side on-signal for turning on the second switching element., 'the power control device comprising an on-timing controller configured'}2. The power control device according to claim 1 ,whereinone end of a first capacitor is connected to the first connection node,one end of ...

INSULATED SYNCHRONOUS RECTIFICATION DC/DC CONVERTER

When a pulse generator detects that a switching transistor on a primary side of a DC/DC converter turns off, the pulse generator sets a pulse signal S to an on level configured as an instruction to turn on a synchronous rectification transistor. When the pulse generator detects that the current that flows through the secondary winding of a transformer becomes substantially zero, the pulse generator sets the pulse signal S to an off level configured as an instruction to turn off the synchronous rectification transistor. After a predetermined time-up period elapses after the detection of the turn-on of the switching transistor, a forced turn-off circuit forcibly turns off the synchronous rectification transistor. 1. A synchronous rectification controller that controls a synchronous rectification transistor and that is arranged on a secondary side of an insulated synchronous rectification DC/DC converter , the synchronous rectification controller comprising:a pulse generator that generates a pulse signal based on a voltage across the synchronous rectification transistor such that, when the pulse generator detects that a switching transistor on a primary side of the DC/DC converter turns off, the pulse signal is set to an on level configured as an instruction to turn on the synchronous rectification transistor, and such that, when the pulse generator detects that a current that flows through a secondary winding of a transformer becomes substantially zero, the pulse signal is set to an off level configured as an instruction to turn off the synchronous rectification transistor;a driver that switches on and off the synchronous rectification transistor according to the pulse signal; anda forced turn-off circuit that forcibly turns off the synchronous rectification transistor after a predetermined time-up period elapses after a detection of a turn-on of the switching transistor.2. The synchronous rectification controller according to claim 1 , wherein claim 1 , after the ...

RECTIFIER IC AND ISOLATED SWITCHING POWER SUPPLY USING SAME

A rectifier IC seals, in a single package, a first transistor chip which integrates a first transistor, a second transistor chip which integrates a second transistor and a controller chip which detects a first node voltage and a second node voltage of each of the transistors so as to perform on/off control on the transistors, and the rectifier IC functions as a secondary-side rectification means of an isolated switching power supply. 1. A rectifier IC comprising , sealed in a single package:a first transistor chip operable to integrate a first transistor;a second transistor chip operable to integrate a second transistor; anda controller chip operable to detect a first node voltage and a second node voltage of each of the transistors so as to perform on/off control on the transistors,wherein the rectifier IC functions as a secondary-side rectification means of an isolated switching power supply.2. The rectifier IC according to claim 1 ,wherein when the controller chip performs the on/off control on the transistors, the controller chip turns on the transistor in which the first node voltage is lower than the second node voltage, and turns off the transistor in which the first node voltage is higher than the second node voltage.3. The rectifier IC according to claim 1 ,wherein each of the transistors is a vertical NDMOSFET (N-channel type double-diffused metal oxide semiconductor field effect transistor).4. The rectifier IC according to claim 3 ,wherein the first transistor chip is die bonded to a first lead frame, the second transistor chip is die bonded to a second lead frame and the controller chip is die bonded to a die pad.5. The rectifier IC according to claim 4 ,wherein the first lead frame and the second lead frame are wider in width than other lead frames, and are exposed from the package as lead pins which also serve as heat dissipation pads.6. The rectifier IC according to claim 4 ,wherein at least part of the die pad is exposed from the package as a heat ...

ISOLATED DC/DC CONVERTER, PRIMARY SIDE CONTROLLER, POWER ADAPTER, AND ELECTRONIC DEVICE

An isolated DC/DC converter includes a transformer having a first winding and a secondary winding, a switching transistor connected to the primary winding of the transformer, a rectifier element connected to the secondary winding of the transformer, a photocoupler, a feedback circuit configured to drive a light emitting element on an input side of the photocoupler by a forward current corresponding to an error between an output voltage of the DC/DC converter and a target voltage of the DC/DC converter, a conversion circuit configured to convert a collector current flowing in a light receiving element on an output side of the photocoupler into a feedback voltage having a negative correlation with the collector current, a pulse signal generator configured to generate a pulse signal corresponding to the feedback voltage, and a driver configured to drive the switching transistor depending on the pulse signal. 1. A primary side controller for use in an isolated DC/DC converter , comprising:a feedback terminal; convert a current flowing at the feedback terminal into a feedback voltage having a negative correlation with the current; and', 'change conversion characteristics from the current to the feedback voltage based on an output current of the isolated DC/DC converter;, 'a conversion circuit configured toa pulse signal generator configured to generate a pulse signal corresponding to the feedback voltage; anda driver configured to generate a driving signal based on the pulse signal.2. The primary side controller of claim 1 , wherein the conversion circuit includes a variable impedance circuit installed between the feedback terminal and a reference voltage line claim 1 , andwherein the conversion circuit is configured such that impedance of the variable impedance circuit is variable based on the output current.3. The primary side controller of claim 2 , wherein the variable impedance circuit includes:a first resistor installed between the feedback terminal and the ...

ISOLATED SYNCHRONOUS RECTIFYING DC/DC CONVERTER

There is provided an isolated synchronous rectifying DC/DC converter that includes a drain terminal connected to a drain of a synchronous rectification transistor, a source terminal connected to a source of the synchronous rectification transistor; a comparator configured to compare a drain voltage of the drain terminal with a predetermined threshold voltage which set is based on a potential of the source terminal, a first flip-flop to which an OFF signal output from the comparator is input, a driver configured to output a gate signal to the synchronous rectification transistor based on an output signal of the first flip-flop, and a first abnormality detection circuit including an abnormality detection comparator configured to compare a voltage of the source terminal with a detection threshold voltage, and configured to output a first abnormality detection signal based on an output of the abnormality detection comparator. 1. An isolated synchronous rectifying DC/DC converter , comprising:a synchronous rectification transistor disposed on a secondary side of the DC/DC converter; anda synchronous rectification controller configured to control driving of the synchronous rectification transistor, a drain terminal connected to a drain of the synchronous rectification transistor;', 'a source terminal connected to a source of the synchronous rectification transistor;', 'a comparator configured to compare a drain voltage of the drain terminal with a predetermined threshold voltage which is set based on a potential of the source terminal;', 'a first flip-flop to which an OFF signal output from the comparator is input;', 'a driver configured to output a gate signal to the synchronous rectification transistor based on an output signal of the first flip-flop; and', 'a first abnormality detection circuit including an abnormality detection comparator configured to compare a voltage of the source terminal with a detection threshold voltage, and configured to output a first ...

ISOLATED SYNCHRONOUS RECTIFYING DC/DC CONVERTER

A synchronous rectification controller includes: a drain terminal connected to a drain of a synchronous rectification transistor; a first comparator configured to compare a drain voltage of the drain terminal with a first threshold voltage; a second comparator configured to compare the drain voltage of the drain terminal with a second threshold voltage; a flip-flop to which an ON signal output from the first comparator and an OFF signal output from the second comparator are input; a driver configured to output a gate signal to the synchronous rectification transistor based on an output signal of the flip-flop; and a threshold adjusting part configured to adjust the second threshold voltage based on the drain voltage. 1. An isolated synchronous rectifying DC/DC converter configured as an LLC converter , the DC/DC converter comprising:a synchronous rectification transistor disposed on a secondary side of the DC/DC converter; anda synchronous rectification controller configured to control driving of the synchronous rectification transistor, a drain terminal connected to a drain of the synchronous rectification transistor;', 'a first comparator configured to compare a drain voltage of the drain terminal with a first threshold voltage;', 'a second comparator configured to compare the drain voltage of the drain terminal with a second threshold voltage;', 'a flip-flop to which an ON signal output from the first comparator and an OFF signal output from the second comparator are input;', 'a driver configured to output a gate signal to the synchronous rectification transistor based on an output signal of the flip-flop; and', 'a threshold adjusting part configured to adjust the second threshold voltage based on the drain voltage., 'wherein the synchronous rectification controller includes2. The DC/DC converter of claim 1 , wherein the threshold adjusting part includes a sample hold circuit configured to sample and hold the drain voltage claim 1 , and is configured to adjust ...

BED APPARATUS

According to an embodiment, a bed apparatus includes a frame, a side rail, and a holder. The holder is secured to the frame. The holder holds the side rail to make the side rail switchable between a first position state where the side rail is in a first position and a second position state where the side rail is in a second position lower than the first position. The holder includes: a lock portion to lock the side rail in the first position state; a cover portion to cover at least part of the lock portion; a lever portion to be operated to release lock of the lock portion; and a stopper portion to make it difficult for the lever portion to operate to release the lock. The bed apparatus that can prevent erroneous release of the lock can be provided. 1. A bed apparatus comprising:a frame;a side rail; anda holder secured to the frame and configured to hold the side rail to make the side rail switchable between a first position state where the side rail is in a first position and a second position state where the side rail is in a second position lower than the first position, a lock portion configured to lock the side rail in the first position state;', 'a cover portion configured to cover at least part of the lock portion;', 'a lever portion configured to be operated to release lock of the lock portion; and', 'a stopper portion configured to make it difficult for the lever portion to operate to release the lock., 'the holder comprising2. The bed apparatus according to claim 1 , whereinthe cover portion includes a recess, andat least part of the stopper portion is in the recess.3. The bed apparatus according to claim 1 , whereinthe cover portion includes a recess, andat least part of the stopper portion is in the recess and below the lever portion. An embodiment of the present invention relates to a bed apparatus.For example, a bed is provided with a side rail movable in a vertical direction. When the side rail is at an upper position, it is possible to prevent a user ...

DRIVING CIRCUIT OF LIGHT EMITTING ELEMENT, AND LIGHT EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE LIGHT EMITTING ELEMENT

A driving circuit for a light emitting element is disclosed. The driving circuit includes a DC-DC converter configured to generate a drive voltage between a first line and a second line; a current driver, configured to be connected to the light emitting element in series between the first line and the second line, configured to supply a drive current to the light emitting element; a protection resistor configured to be connected to the light emitting element in series between the first line and the current driver; and a controller configured to control the DC-DC converter such that a first detection voltage, which corresponds to a voltage between both ends of the current driver, approaches a predetermined reference voltage and perform a predetermined protection process if the drive voltage between the first line and the second line exceeds a predetermined first threshold voltage. 1. A driving circuit for a light emitting element , comprising:a DC-DC converter configured to generate a drive voltage between a first line and a second line;a current driver, configured to be connected to the light emitting element in series between the first line and the second line, configured to supply a drive current to the light emitting element;a protection resistor configured to be connected to the light emitting element in series between the first line and the current driver; anda controller configured to control the DC-DC converter such that a first detection voltage, which corresponds to a voltage between both ends of the current driver, approaches a predetermined reference voltage, and perform a predetermined protection process if the drive voltage between the first line and the second line exceeds a predetermined first threshold voltage.2. The driving circuit of claim 1 , further comprising a voltage divider configured to generate a second detection voltage by dividing the drive voltage claim 1 , an error amplifier configured to generate an error signal by amplifying an error ...

ISOLATED DC/DC CONVERTER, FEEDBACK CIRCUIT THEREOF, POWER SUPPLY DEVICE, POWER SUPPLY ADAPTOR, AND ELECTRONIC DEVICE USING THE SAME

A feedback circuit includes: an input terminal which receives a voltage detection signal corresponding to an output voltage of a DC/DC converter; an output terminal connected to an input side of the photo coupler; a ground terminal; a shunt regulator configured to amplify an error between the voltage detection signal and its target voltage and pull up a first current corresponding to the error from the input side of the photo coupler via the output terminal; and a protection circuit configured to pull up a second current from the input side of the photo coupler via the output terminal when an abnormality of the secondary side of the DC/DC converter is detected. The feedback circuit is packaged into a single module. 1. A feedback circuit disposed at a secondary side of an isolated DC/DC converter , wherein the DC/DC converter includes:a transformer having a primary winding and a secondary winding;a switching transistor connected to the primary winding of the transformer;a rectification element connected to the secondary winding of the transformer;a photo coupler;a primary side controller which is connected to an output side of the photo coupler and is configured to switch the switching transistor in response to a feedback signal from the photo coupler; andthe feedback circuit configured to drive the photo coupler, an input terminal which receives a voltage detection signal corresponding to an output voltage of the DC/DC converter;', 'an output terminal connected to an input side of the photo coupler;', 'a ground terminal;', 'a shunt regulator configured to amplify an error between the voltage detection signal and its target voltage and draw a first current corresponding to the error from the input side of the photo coupler via the output terminal; and', 'a protection circuit configured to draw a second current from the input side of the photo coupler via the output terminal when an abnormality of the secondary side of the DC/DC converter is detected, and, 'the ...

INSULATED SYNCHRONOUS RECTIFICATION DC/DC CONVERTER

A secondary-side module comprises: a synchronous rectification controller that controls a synchronous rectification transistor; and a shunt regulator that generates a current that corresponds to the difference between an output voltage Vof a DC/DC converter and the target value of the output voltage, which are housed in a single package. The multiple pins to be connected to the shunt regulator are all laid out along a first side of the package. 1. A secondary-side module arranged on a secondary side of an insulated synchronous rectification DC/DC converter , the secondary-side module comprising:a synchronous rectification controller that controls a synchronous rectification transistor; anda shunt regulator that generates a current that corresponds to a difference between an output voltage of the DC/DC converter and a target value of the output voltage,wherein the synchronous rectification controller and the shunt regulator are housed in a single package,and wherein a plurality of pins to be connected to the shunt regulator are all laid out along a first side of the package.2. The secondary-side module according to claim 1 , wherein a plurality of pins to be connected to the synchronous rectification controller are all laid out along a second side of the package that is opposite to the first side.3. The secondary-side module according to claim 1 , wherein claim 1 , from among the plurality of pins to be connected to the synchronous rectification controller claim 1 , a pin to be connected to a drain of the synchronous rectification transistor is laid out on the first side.4. The secondary-side module according to claim 1 , wherein the synchronous rectification controller and the shunt regulator are separately integrated on independent semiconductor chips.5. A secondary-side module arranged on a secondary side of an insulated synchronous rectification DC/DC converter claim 1 , the secondary-side module comprising:a synchronous rectification controller that controls a ...

INSULATED SYNCHRONOUS RECTIFICATION DC/DC CONVERTER

An external circuit element Ris connected in use to an SET terminal. A synchronous rectification controller generates a pulse signal S based on a control time determined according to the state of the SET terminal. A driver switches on and off the synchronous rectification transistor according to the pulse signal S An abnormal state detection circuit is capable of detecting an open-circuit state and/or a short-circuit state that can occur in the SET terminal. When the abnormal state detection circuit detects such an open-circuit state and/or short-circuit state, the abnormal state detection circuit asserts a detection signal S When the detection signal S is asserted, a primary-side controller arranged on the primary side of the DC/DC converter is instructed to suspend the switching operation of a switching transistor. 1. A secondary-side controller that is arranged on a secondary side of an insulated synchronous rectification DC/DC converter , and that controls a synchronous rectification transistor , the secondary-side controller comprising:a set terminal that is connected in use to an external circuit element;a synchronous rectification controller that generates a pulse signal based on a control time determined according to a state of the set terminal;a driver that switches on and off the synchronous rectification transistor according to the pulse signal; andan abnormal state detection circuit that is capable of detecting an open-circuit state and/or a short-circuit state that can occur in the set terminal, and that asserts a detection signal upon detection of such an open-circuit state and/or a short-circuit state,wherein, when the detection signal is asserted, the secondary-side controller instructs a primary-side controller arranged on a primary side of the DC/DC converter to suspend a switching operation of a switching transistor.2. The secondary-side controller according to claim 1 , further comprising:a fail terminal connected in use to an input side of a ...

MALE MEMBER AND TOOL CHANGER

A male member and tool changer for downsizing and preventing damage to proximity sensors; a male member includes a cam adapted to pivot between an engagement position at which the cam engages with a lock pin of a female member and a disengagement position at which the cam moves out of the engagement, and a cylinder unit adapted to pivot the cam between the engagement position and the disengagement position. A first proximity sensor and the second proximity sensor are assembled onto a cylinder sidewall of the cylinder unit and first and second detection surfaces of the proximity sensors are revealed in a cylinder chamber. The first detection surface is placed at a position facing on a piston when the cam is located at the disengagement position and the second detection surface is placed at a position facing on the piston when the cam is located at the engagement position. 1. A male member of an automatic tool changer , the male member being mounted on a main body side of equipment and coupled to a female member mounted on a tool side , the male member comprising:a cylinder unit equipped with a piston, a cylinder chamber housing the piston, and a piston rod coupled at one end to the piston, the piston rod moving back and forth as the piston reciprocates in the cylinder chamber;a cam provided corresponding to an engaging member of the female member, the cam being configured to be pivotable between an engagement position at which the cam engages with the engaging member and a disengagement position at which the cam disengages from the engaging member, the cam pivoting between the engagement position and the disengagement position when the piston rod moves back and forth;a first proximity sensor configured to reveal a first detection surface in the cylinder chamber, the first proximity sensor being placed at a position facing on the piston when the cam is located at the disengagement position, the first proximity sensor detecting presence or absence of the piston in ...

Insulated synchronous rectification dc/dc converter

An insulated synchronous rectification DC/DC converter is provided. A feedback circuit drives a light-emitting element of a first photocoupler such that the output voltage V OUT of the DC/DC converter approaches a target voltage. A primary side controller is coupled to a light-receiving element of the first photocoupler, so as to switch on and off a switching transistor according to a feedback signal V FB . A synchronous rectification controller controls a synchronous rectification transistor. Upon detecting the occurrence of a switching-incapable state in the synchronous rectification transistor, a protection circuit instructs the primary side controller to stop the switching operation of the switching transistor.

CONNECTOR APPARATUS

A connector apparatus which can keep an electrical connection between signal pins in good condition; when a male member and female member are coupled together, first bumps of a first contact portion and second bumps of a second contact portion are brought into contact with each other, electrically connecting the first signal pins wand second signal pins with each other. Measures are taken to bring tops and ridge lines of the second bumps into contact with lateral faces of the first bumps. Also, the first signal pins and second signal pins are configured to be pivotable. During connection, contact area is increased by contact between the lateral faces of the first bumps and the tops and ridge lines of the second bumps, causing rubbing between the lateral faces and the tops and ridge lines, and thereby pushing aside and rubbing off sticking spatter, oxide films, contamination, and the like. 1. A connector apparatus comprising a first connector having a first signal pin and a second connector having a second signal pin , the connector apparatus electrically connecting the first connector and the second connector by bringing tips of the first signal pin and the second signal pin into contact with each other , wherein:the first signal pin has a first contact portion on a front end face, the first contact portion being made up of a plurality of mountain-shaped first bumps arranged two-dimensionally;the second signal pin has a second contact portion on a front end face, the second contact portion being made up of a plurality of mountain-shaped second bumps arranged two-dimensionally; andat least one of the first signal pin and the second signal pin is pivotable on an axis; and sloped portions of at least one of the first bumps and the second bumps come into contact with either or both of tops and ridge lines of the other of the first bumps and the second bumps.2. The connector apparatus according to claim 1 , wherein the sloped portions of either of the first bumps and the ...

Insulated dc/dc converter

A primary-side controller comprises a feedback (FB) terminal coupled to a light-receiving element of a photocoupler so as to receive a feedback signal from the photocoupler, and a current detection (CS) terminal that receives a current detection signal that corresponds to a voltage drop across a sense resistor R S . The primary-side controller includes a current mode modulator that generates a control pulse based on the voltage at the FB terminal and the voltage at the CS terminal. The primary-side controller is configured to be switchable between a normal mode and a burst mode. When the electrical state of the DC/DC converter satisfies a predetermined condition, a burst mode adjustment circuit inhibits transition to the burst mode, or otherwise forces transition from the burst mode to the normal mode.

IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, NON-TRANSITORY TANGIBLE MEDIUM HAVING IMAGE PROCESSING PROGRAM, AND IMAGE-PICKUP DEVICE

An image processing device includes: a parallax control processing section performing an image processing for modifying a parallax magnitude, on each of a plurality of parallax images obtained through shooting from a plurality of respective view point directions different from one another, with use of shooting information related to a shooting condition for each of the parallax images.

Insulation-type synchronous dc/dc converter

A synchronous rectifier controller is provided on a secondary side of an insulation-type synchronous DC/DC converter and controls the synchronous rectifier transistor. A driver circuit controls the synchronous rectifier transistor. A photo coupler connection terminal is coupled to an input side of the photo coupler. An error amplifier amplifies an error between a voltage detection signal according to an output voltage of the DC/DC converter and its target voltage, and to draw a current according to the error from an input side of the photo coupler via the photo coupler connection terminal.

POWER SUPPLYING MODULE

A power supplying module that can be reduced in size is provided. The power supplying module includes a module body, and a lead-in unit provided on one surface of the module body. The lead-in unit includes a plate unit that fixes at least one sealing tube to the one surface of the module body, and at least one circumference holding unit that holds a circumference of the corresponding sealing tube. The plate unit is provided with, in a longitudinal direction of the one surface of the module body, a plurality of cable insertion holes, and a plurality of positioning portions that position the plurality of circumference holding units to the corresponding cable insertion holes. 1. A power supplying module detachably attached to one of a first coupling member and a second coupling member that are included in an automatic tool changer , the first coupling member being detachably attached to a body of an instrument , the second coupling member being detachably attached to a tool of the instrument , the power supplying module comprising:a module body; and a plate unit that fixes at least one sealing tube to the one surface of the module body; and', 'at least one circumference holding unit holding a circumference of the corresponding sealing tube, and', 'wherein the plate unit is provided with, in a longitudinal direction of the one surface of the module body, a plurality of cable insertion holes, and a plurality of positioning portions that position the plurality of circumference holding units to the corresponding cable insertion holes., 'a lead-in unit provided on one surface of the module body, the lead-in unit including2. The power supplying module according to claim 1 , wherein each of the positioning portions includes:a protruding portion protruding from one surface of the plate unit, anda through-hole that is formed in the protruding portion and through which a fastening member is inserted through a pair of the circumference holding units disposed to face each other ...

ISOLATED SYNCHRONOUS RECTIFICATION-TYPE DC/DC CONVERTER

A secondary controller drives a light emitting element of a photocoupler such that a detection voltage Vcorresponding to an output voltage Vgenerated in an output capacitor C approximates to a reference voltage V. A primary controller controls a switching transistor M according to a feedback signal V. A protection circuit is activated and drives the light emitting element of the photocoupler when detecting an abnormal state. An auxiliary power supply circuit includes a power supply capacitor C provided separately from the output capacitor C and supplies a power supply voltage Vto the protection circuit and an anode of the light emitting element of the photocoupler. 1. An isolated synchronous rectification-type DC/DC converter comprising:a transformer having a primary winding and a secondary winding;a switching transistor coupled to the primary winding of the transformer;an output capacitor coupled to be charged by a current flowing in the secondary winding of the transformer;a photocoupler having a light emitting element and a light receiving element;a feedback circuit structured to drive the light emitting element of the photocoupler such that a detection voltage corresponding to an output voltage generated in the output capacitor approximates to a reference voltage;a primary controller coupled to the light receiving element of the photocoupler and structured to control the switching transistor corresponding to a feedback signal based on a state of the light receiving element;a protection circuit structured to be activated and to drive the light emitting element when detecting an abnormal state; andan auxiliary power supply circuit having a power supply capacitor provided separately from the output capacitor and structured to supply a power supply voltage generated in the power supply capacitor to the protection circuit and an anode of the light emitting element of the photo coupler.2. The DC/DC converter according to claim 1 , whereinthe protection circuit ...

INSULATED SYNCHRONOUS RECTIFICATION TYPE DC/DC CONVERTER, AND POWER ADAPTOR AND ELECTRONIC DEVICE

An isolated synchronous rectification type DC/DC converter, includes: a transformer including primary and secondary windings; a switching transistor connected to the primary winding; a synchronous rectifying transistor installed between the secondary winding and a ground line on the secondary side; a photocoupler including a light emitting device and a light receiving device; a feedback circuit driving the light emitting device such that an output voltage of the DC/DC converter approaches a target voltage; a primary side controller connected to the light receiving device and switching the switching transistor depending on feedback signal from the photocoupler; a synchronous rectification controller controlling the rectifying transistor; and a protection circuit including a temperature detection element, one end of the detection element connected to a drain of the rectifying transistor, the protection circuit configured to detect an overheated state of the rectifying transistor depending on a first signal generated by the temperature detection element. 1. An isolated synchronous rectification type DC/DC converter , comprising:a transformer including a primary winding and a secondary winding;a switching transistor connected to the primary winding of the transformer;a synchronous rectifying transistor installed between the secondary winding of the transformer and a ground line on the secondary side;a photocoupler including a light emitting device and a light receiving device;a feedback circuit configured to drive the light emitting device of the photocoupler such that an output voltage of the DC/DC converter approaches a target voltage;a primary side controller which is connected to the light receiving device of the photocoupler and switches the switching transistor depending on a feedback signal from the photocoupler;a synchronous rectification controller configured to control the synchronous rectifying transistor; anda protection circuit including a temperature ...

INSULATED DC/DC CONVERTER, AND POWER ADAPTOR AND ELECTRONIC DEVICE USING THE SAME

An insulated DC/DC converter includes: a transformer; a switching transistor; a rectifier circuit; a photocoupler; a feedback circuit configured to drive a light emitting element of the photocoupler such that an output voltage of the DC/DC converter approaches a target voltage; a primary side controller having a feedback terminal which is connected to a light receiving element of the photocoupler and receives a feedback signal from the photocoupler, a zero current detection terminal which receives a zero current detection signal corresponding to a voltage generated at one end of an auxiliary winding of the transformer, and a pulse modulator of a quasi-resonant mode configured to generate a pulse signal depending on the feedback signal and the zero current detection signal; and a starting control circuit which, in start-up of the DC/DC converter, electrically affects the zero current detection terminal such that an OFF time of the switching transistor lengthens. 1. An insulated DC/DC converter , comprising:a transformer having a primary winding, a secondary winding, and an auxiliary winding;a switching transistor installed between the primary winding of the transformer and a ground line;a rectifier circuit connected to the secondary winding of the transformer;a photocoupler including a light emitting element and a light receiving element;a feedback circuit configured to drive the light emitting element of the photocoupler such that an output voltage of the DC/DC converter approaches a target voltage;a primary side controller having a feedback terminal which is connected to the light receiving element of the photocoupler and receives a feedback signal from the photocoupler, a zero current detection terminal which receives a zero current detection signal corresponding to a voltage generated at one end of the auxiliary winding, and a pulse modulator of a quasi-resonant mode configured to generate a pulse signal depending on the feedback signal and the zero current ...

SYNCHRONOUS RECTIFICATION CONTROLLER AND ISOLATED SYNCHRONOUS RECTIFICATION TYPE DC/DC CONVERTER

A synchronous rectification controller that controls driving a synchronous rectification transistor arranged on secondary side, includes: a gate terminal being electrically connectable to a gate of the synchronous rectification transistor; a drain terminal being electrically connectable to a drain of the synchronous rectification transistor via a first resistor; a first comparator comparing a drain terminal voltage generated at the drain terminal with negative first threshold voltage; a second comparator comparing the drain terminal voltage with negative second threshold voltage higher than the first threshold voltage; and a driver performing on/off control of the synchronous rectification transistor based on result of the comparison by the first comparator and result of the comparison by the second comparator, wherein when the synchronous rectification transistor is turned on, voltage is added to the drain terminal voltage by current flowing through the first resistor according to a second resistor. 1. A synchronous rectification controller that controls driving a synchronous rectification transistor arranged on a secondary side , comprising:a gate terminal capable of being electrically connected to a gate of the synchronous rectification transistor;a drain terminal capable of being electrically connected to a drain of the synchronous rectification transistor via a first resistor;a first comparator configured to compare a drain terminal voltage generated at the drain terminal with a negative first threshold voltage;a second comparator configured to compare the drain terminal voltage with a negative second threshold voltage higher than the negative first threshold voltage; anda driver configured to perform an on/off control of the synchronous rectification transistor based on a result of the comparison by the first comparator and a result of the comparison by the second comparator,wherein when the synchronous rectification transistor is turned on, a voltage is added ...

Insulated synchronous rectification DC/DC converter including capacitor and auxiliary power supply

A first capacitor and an auxiliary power supply are provided to a secondary side of an insulated synchronous rectification DC/DC converter, in addition to a synchronous rectification transistor and a secondary-side controller. One end of the first capacitor is connected to a first node that connects the synchronous rectification transistor and a secondary winding. The auxiliary power supply charges the first capacitor using the voltage V OUT supplied via the output line, so as to stabilize the voltage across the first capacitor. The ground voltage is supplied to the secondary-side controller via the first node. Furthermore, the power supply voltage is supplied to the secondary-side controller via the other end of the first capacitor.

Current driving circuit

A current driving circuit may include a reference voltage input terminal; a resistor connection terminal; an output terminal via which the light emitting element is connected; a reference voltage generating unit; a transistor arranged such that one terminal thereof is connected to the resistor connection terminal; and an operational amplifier including first and second non-inverting input terminals and a single inverting input terminal, and arranged such that the output terminal thereof is connected to a control terminal of the transistor, the internal reference voltage is input to the first non-inverting input terminal, the external reference voltage is input to the second non-inverting input terminal, and the inverting input terminal thereof is connected to the resistor connection terminal. When the external resistor is connected between the resistor connection terminal and a ground terminal, a driving current is output via the output terminal.

Dimensional image display device, a manufacturing method thereof, and a stereoscopic image display method

Insulated synchronous rectification type DC/DC converter, and power adaptor and electronic device

An isolated synchronous rectification type DC/DC converter, includes: a transformer including primary and secondary windings; a switching transistor connected to the primary winding; a synchronous rectifying transistor installed between the secondary winding and a ground line on the secondary side; a photocoupler including a light emitting device and a light receiving device; a feedback circuit driving the light emitting device such that an output voltage of the DC/DC converter approaches a target voltage; a primary side controller connected to the light receiving device and switching the switching transistor depending on feedback signal from the photocoupler; a synchronous rectification controller controlling the rectifying transistor; and a protection circuit including a temperature detection element, one end of the detection element connected to a drain of the rectifying transistor, the protection circuit configured to detect an overheated state of the rectifying transistor depending on a first signal generated by the temperature detection element.

Composite electronic component and method of manufacturing the same

Stereoscopic picture display, method of manufacturing the same and stereoscopic picture display method

A stereoscopic picture is viewable from all directions with high reproducibility without complicating a stereoscopic display mechanism, compared to related art. A cylindrical rotation section 104 rotating around a rotation shaft as a rotation center, a two-dimensional light-emitting element array 101 mounted in the rotation section and having a light-emission surface formed of a plurality of light-emitting elements arranged in a matrix, and a slit 102 arranged in a circumferential surface of the rotation section in a position facing the light-emission surface are included. As the two-dimensional light-emitting element array 101 , a two-dimensional light-emitting element array including a curved portion with a concave surface which is formed as a light-emission surface is used. The plurality of light-emitting elements emit light, which corresponds to orientation of the light-emission surface, to outside of the rotation section through the slit 102.

Combined electronic components with resonator and capacitor elements e.g. for Colpitts oscillator

The component has a resonator element (1) with a thin piezoelectric substrate with front and back main surfaces and first and second opposing side surfaces. This element (1) has first (3) and second (4) resonator electrodes. The first (3) has a first vibration part on the front main surface and a connection part. The latter extends from the vibration part to cover the first side surface. The second resonator electrode (4) has a second vibration part on the back main surface and a second connector part extending from the second vibration part to cover the second side surface. The component also has a capacitor element (10) with a dielectric plate with front and back main surfaces. It has a first (12) and a second (13) capacitor electrode on each end of the front main surface. It also has a third electrode (14) on the back surface. A length of the dielectric plate extends from the first to the second capacitor electrode and is longer than a length of the piezoelectric substrate extending from the first to the second side surface. Adhesive material fastens the back surface of the resonator element (1) to the front surface of the capacitor element (10) with a vibration space (VS) between them such as to define first and second side steps by the ends of the capacitor element and the sides of the resonator element. Connection leads are provided to the two elements.

Power source device, and mobile apparatus

Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatus

An image production apparatus, an image display apparatus and an image display method are disclosed which can reduce the ununiformity in luminance and color which appears on a display screen and can be formed compact. Also optical modulation device adjustment apparatus is disclosed which can detect and correct the ununiformity in modulation characteristic of a modulation device. The image display apparatus includes a light detection apparatus in addition to a light source section, an illumination optical system, an optical modulation section, a spatial filter, a light projection section and a screen. The light detection apparatus detects the dispersion of a modulation characteristic of each pixel element of GLV devices and the ununiformity in luminance and color displayed in accordance with an illumination condition. An optimum driving voltage for minimizing the ununiformity in color and luminance to be displayed is determined based on a signal detected by the light detection apparatus.

Control circuit for switching power supply

A soft-start circuit generates a soft-start voltage Vss having a voltage level that rises over time. A pulse width modulator generates a PWM signal having a duty ratio adjusted such that a feedback voltage Vout′ that corresponds to the output voltage Vout of the switching power supply matches the soft-start voltage Vss. A driver circuit controls a switching element according to the PWM signal. A capacitor is arranged such that one terminal thereof is set to a fixed electric potential. A current source generates a charge current that flows intermittently in synchronization with the PWM signal so as to charge the capacitor. The soft-start circuit outputs, as the soft-start voltage Vss, a voltage that occurs at the capacitor.

Semiconductor exposure device

A semiconductor light exposure device reducing coherency of laser light to an appropriate value by a simplified structure without producing speckles. The semiconductor light exposure device includes an ultraviolet light generating device, a uniform illumination device having the operation of inducing an optical path length difference and a projection device for projecting the laser light from the uniform illumination device. The ultraviolet light generating device includes an Nd:YAG Q-switch laser unit with a wavelength of 1064 nm, oscillated with a longitudinal single mode, a phase modulation unit or phase-modulating the fundamental laser light outgoing from the Nd:YAG Q-switch laser unit with voltage signals having plural frequency components, and a wavelength conversion unit for converting the wavelength of the fundamental laser light phase-modulated by the phase modulation unit into an ultraviolet laser light with a wavelength of 213 nm as a fifth harmonics. <IMAGE>

Display device

【課題】円弧状のディスプレイに生じた正反射の迷光に起因するコントラストの低下を抑止する。 【解決手段】本開示の一側面である表示装置は、側面に１以上のスリットが設けられた筐体と、前記筐体に内蔵された、略円弧状のディスプレイとを備え、前記筐体が回転されるときに前記ディスプレイに表示される映像が前記スリット越しに視認される表示装置において、前記略円弧状のディスプレイの曲率は、正反射の迷光が生じないように形成されている。本開示は、例えば全周囲立体映像表示装置に適用することができる。 【選択図】図５

Focusing control mechanism, and inspection apparatus using same

To properly focus an ultraviolet objective lens by the use of a distance sensor even when inspecting an object having a larger step than the focal depth of the objective lens, a difference between the real shape of a convex or concave pattern in each of dies formed on a semiconductor wafer 100 to be inspected and the shape (false shape) of a convex or concave pattern the distance sensor 8 recognizes, is calculated as a correction value C2 intended for use to compensate for an influence of the step in the die. The output from the distance sensor 8 is compensated with the correction value C2 to determine an accurate target moving distance, and an inspection stage 2 is driven accordingly to the target moving distance to automatically focus the ultraviolet objective lens.

Isolated synchronous rectifying DC/DC converter

An isolated synchronous rectifying DC/DC converter includes a drain terminal connected to a drain of a synchronous rectification transistor, a source terminal connected to a source of the synchronous rectification transistor; a comparator configured to compare a drain voltage of the drain terminal with a predetermined threshold voltage which set is based on a potential of the source terminal, a first flip-flop to which an OFF signal output from the comparator is input, a driver configured to output a gate signal to the synchronous rectification transistor based on an output signal of the first flip-flop, and a first abnormality detection circuit including an abnormality detection comparator configured to compare a voltage of the source terminal with a detection threshold voltage, and configured to output a first abnormality detection signal based on an output of the abnormality detection comparator.

Power supply unit and portable device

A power supply unit is adapted to automatically switch its operational mode between a light load mode and a heavy load mode depending on the level of its output current. The unit has a first error amplification circuit for controlling a first output circuit in the heavy load mode, and a second error amplification circuit for controlling the second output circuit in the light load mode. The first and the second output circuits are controllably enabled and disabled in the opposite manner based on the level of the output current. Thus, the unit can operate on a reduced consumption current with an improved transient response when operating in the light load mode.

Optical device and image generation apparatus

【課題】 複数のレーザビームを用いて、高輝度化及び高性能化に適した光学装置及び画像生成装置を提供する。 【解決手段】 レーザ光を変調する一次元光変調素子５と、該一次元光変調素子の長軸方向に直交する平面内においてレーザ光源２からの複数本のレーザビームを集光して一次元光変調素子５に照射するビーム集光手段４と、各レーザビームについて光線伝播方向の角度調整を行って該レーザビームを平行化してからビーム集光手段４に入射させるための方向調整手段３を設ける。ビーム集光手段４への入射角度ずれを「θ」、一次元変調素子５の短軸方向における画素サイズを「Ｗ」、一次元変調素子５を構成する個々の画素要素に対するレーザビームの位置ずれ量の許容範囲の絶対値を「α・Ｗ」（但し、「０＜α＜１」）、ビーム集光手段４に係る焦点距離を「ｆ」と記すとき、θの絶対値が「α・Ｗ／ｆ」以下となるように方向調整する。 【選択図】 図１

立体画像表示装置、その製造方法及び立体画像表示方法

【課題】従来方式に比べて立体表示機構を複雑化することなく、立体画像を全周囲から再現性良く視認できるようにする。 【解決手段】回転軸１０３を回転中心として回転する円筒状の回転部１０４と、回転部１０４の内部に取り付けられ、複数の発光素子がマトリクス状に配設されることにより形成された発光面を有する２次元発光素子アレイ１０１と、発光面に対向する位置において、回転部１０４の周面に設けられたスリット１０２とを備える。２次元発光素子アレイ１０１として、曲面形状部分の凹面側に発光面が形成されたものを用いる。複数の発光素子が、発光面の方向に応じた光を、スリット１０２を介して回転部の外部に放射する。 【選択図】図１

Power supply control device and flyback converter

The present disclosure provides a power supply control device and a flyback converter. The power supply control device includes: a comparator, comparing a current sensing signal generated by IN conversion of a primary side current flowing in the primary winding with a threshold voltage; a switching controller, turning off a switching element according to a comparing result of the current sensing signal and the threshold voltage by the comparator; an external terminal, connectable to a connection node of an external resistor connected in series between one end of the auxiliary winding and an application end of a ground potential; a current detector, detecting a terminal current flowing through the external terminal; and a threshold voltage corrector, correcting the threshold voltage based on a current detection signal of the current detector.

Power control device and flyback converter

A power control device ( 40 ) includes a feedback voltage generator ( 401 ), which generates as a differential current (I_DF) the difference between a first current (I_VDS) generated by a first resistor ( 59 ) having one terminal connectable to a current input terminal (DRAIN terminal) and a second current (I_VH) generated by a second resistor ( 58 ) having one terminal connectable to an application terminal for an input voltage (VIN) and which generates a feedback voltage (V 1 ) based on the differential current generated.

歩行型除雪機

【課題】駆動スプロケット等にかかる製造コストの削減と、機体本体重量を軽減する。【解決手段】機体本体と、機体本体を走行駆動するクローラ走行装置とを備え、クローラ走行装置は、駆動スプロケット２３と従動スプロケットと、駆動スプロケット２３と従動スプロケットとに亘って巻回されたクローラベルトとを有し、駆動スプロケット２３は、駆動源からの動力を駆動スプロケット２３に伝達する駆動軸Ｄが接続される芯金部２３２と、クローラベルトに作用するリム部２３０と、芯金部２３２とリム部２３０とを繋ぐスポーク部２３１とを備え、リム部２３０とスポーク部２３１とが樹脂で構成されており、芯金部２３２とリム部２３０とスポーク部２３１とが一体化されている。【選択図】図４

画像投影方法及び画像表示装置

【課題】一次元状の光変調素子の表面におけるボイドやヒロック等の劣化の発生を抑制し得る画像投影方法を提供し、小型で高輝度の画像表示装置の信頼性の向上を図る。 【解決手段】光変調素子により光を変調してスクリーン上に結像し投影する画像投影方法であって、光変調素子は第１面と第２面とを有し、少なくともこれら第１面及び第２面の相対的移動によって異なる回折格子を構成して光変調し、集光レンズ１２によって集光する光のビームウエスト位置からずらした位置に光変調素子１３を配置して、光変調素子１３から回折される光のうち１本の回折光のビームウエスト位置の像を結像する。 【選択図】 図２

投射型画像表示装置及びスクリーン

【課題】投射光の光路への人の立ち入りを正しく確実に検出することができると共に、検出手段を安価に構成することが可能である投射型画像表示装置、並びにこの投射型画像表示装置に用いられるスクリーンを提供する。 【解決手段】画像を表示するスクリーン３と、このスクリーン３に画像を投射する投射手段２とを備え、スクリーン３の画像表示領域１０よりも外側に光を出射する照明手段１１が設けられ、投射手段２側に照明手段１１から出射される光を検出する検出手段４が設けられている投射型画像表示装置１を構成する。また、画像表示領域１０よりも外側に、光を発生する照明手段１１が設けられているスクリーン３を構成する。 【選択図】 図１

電動除雪機

【課題】デッドマンレバーの機能を維持しつつレバーの数の削減が可能な作業機を提供することを課題とする。【解決手段】右のグリップ１８の近くにドーザー１２の旋回を不能にするドーザーロックレバー１９を設ける。左のグリップ１６に、走行速度を制御する走行速度制御レバー１７を設け、この走行速度制御レバー１７に従来のデッドマンレバーの機構を含めるようにした。デッドマンレバーが不要であるため、レバーの数を削減することができた。【効果】デッドマンレバーが不要であるため、レバーの数を削減することができた。すなわち、デッドマンレバーの機能を維持しつつレバーの数の削減が可能な作業機が提供される。【選択図】図１

作業機

【課題】操作レバーの操作力が軽減され、且つ製造費を抑えることができる作業機を提供する。【解決手段】左のサイドクラッチの断接制御を行う左のクラッチ切換軸４６Ｌ、アーム４７Ｌ、リンク６２Ｌを、シーソー部材５８の一端に連結し、右のサイドクラッチの断接制御を行う右のクラッチ切換軸４６Ｒ、アーム４７Ｒ、リンク６２Ｒを、シーソー部材５８の他端に連結する。１個の電動モータ４３で、シーソー部材５８を左又は右へ回転することで、左又は右のサイドクラッチの断接制御を行う。【効果】電動モータで左右のサイドクラッチを断接制御するため、操作力が軽減されると共に油圧やワイヤは不要である。また、シーソー部材を採用することで電動モータは１個で済ませることができ、作業機の製造コストを低減することができる。【選択図】図４

缶取り付け型クリップ

(57)【要約】 【課題】 この発明は電車に乗っている時や作業をして いる時に、両手を塞ぐことなく容易におつまみを保持す ることができる缶取り付け型クリップに関する。 【解決手段】 この発明では、プラスチック等の可とう 性および弾性を有する材料により缶に脱着可能な固定バ ンドと、該固定バンドに付属しているクリップ状の押さ え片からなっており、缶の表面と押さえ片の間におつま みの袋などを挿入して挟持することができる。

検査装置、検査方法、電気光学装置の製造方法及び電子機器

【課題】検査用ピンが電子機器に用いられる電気光学装置等のモジュールの接続端子等を傷つけないで、簡単にモジュールの検査をすることができる検査装置、検査方法、その検査装置を用いて電気光学装置を製造する方法及びその電気光学装置を製造する方法により製造した電気光学装置を備えた電子機器を提供すること。 【解決手段】検査対象である例えば液晶装置のモジュール２１を載置台４に載置する際に、検査用ピン６を載置台４の検査用開口部７から出ないように検査装置１に出没手段を設けたので、検査用ピン６でモジュール２１の接続端子２９等を傷つけることがなく検査でき、液晶装置の更なる品質向上を図れる。 【選択図】　図８

電気光学装置の製造方法、電気光学装置、電子機器、および圧着装置

(57)【要約】 【課題】 電気光学物質を劣化させることなく透明基板 の端子と電子部品の端子とを位置合わせした後、端子同 士を電気的に接続することのできる電気光学装置の製造 方法、電気光学装置、電子機器、および圧着装置を提供 すること。 【解決手段】 電気光学装置を製造するにあたって、第 １の位置合わせ工程において、パワーの小さな第１の光 源１２１から出射された光を用いて透明基板２０の位置 合わせをした後、第２の位置合わせ工程において、パワ ーの大きな第２の光源１２２から出射された光を用いて 端子同士の位置合わせを行い、しかる後、透光性ステー ジ１１０上で異方性導電材によって端子同士を電気的に 接続する。光源制御部１４０は、２つの光源のうち、パ ワーの小さな第１の光源１２１については各工程を通じ て点灯状態とし、パワーの大きな第２の光源１２２につ いては第２の位置合わせ工程においてのみ点灯状態とす る。

継手部を含む管路の樹脂ライニング工法

【課題】継手部を含む管路に対する樹脂ライニング工法において、継手漏洩抑止効果を得ることができると共に、管路の亀裂折損時漏洩抑止を得ることができ、更には、管路に分岐開口が存在する場合にも、事後的な分岐開口形成を行うことなく施工が完了できること。 【解決手段】即硬化性且つ高粘度の樹脂材を管路Ｐの長手方向に沿った回転軸の周りに回転駆動される回転ヘッド１１に供給して管内面に向けて遠心分散させる樹脂分散手段１０を用い、樹脂分散手段１０を開放された管路Ｐの一端から他端に向けて設定速度で移動して、管路Ｐの内面に継手間隙を覆って連続性を維持する設定膜厚のライニング膜を形成し、管路Ｐに分岐開口が存在する場合には、樹脂分散手段１０が分岐開口上を通過する際に、分岐開口の外から管路内に向かう送風を行う。 【選択図】図２

ライニング管の端末固定構造

【課題】拡径が困難なＰＥ管のようなライニング管を元の円形状態に復元した状態で端末固定した場合であっても、地下水の浸入や管内流体の漏洩を防止することができるライニング管の端末固定構造を提供するものである。 【解決手段】本発明は、ライニング管の端末部の嵌め込みが可能な内径寸法を有する管嵌合部、及び管嵌合部よりも小さな内径寸法を有する管非嵌合部が形成され、ライニング管の端末部と補修管との間の隙間を塞ぐ閉塞リングと、閉塞リングの管嵌合部に嵌め込まれるライニング管の端末部の内周面と閉塞リングの管非嵌合部の内周面との間に跨って配設される弾性リングと、弾性リングを前記２つの内周面に圧着させて閉塞リングを前記ライニング管に固定するための締付けリングと、補修管の内周面に対して閉塞リングがスライド可能な状態で、閉塞リングと補修管との間に介在する運動用シールリングとを備える。 【選択図】　　図１

Light emitting device and display apparatus

A light emitting device includes: a light emitting chip arranged on a substrate; a resin lens which covers the light emitting chip and focuses irradiation light from the light emitting chip; a mask which covers a region of an upper layer surface of the substrate, other than the resin lens; and a low surface tension film formed on a region of the upper layer surface of the substrate, other than in the proximity of the light emitting chip.

Power supply unit and portable device

A step-like operation command signal is inputted into a time-constant circuit to generate a gradually rising operation command input voltage, which is supplied to a power supply unit. Enablement and disablement of the power supply unit is controlled on the basis of the operational command input voltage. When the operation command input voltage exceeds a first predetermined voltage level, a detection signal and a reference voltage are generated, and at the same time an error amplification circuit is enabled. On the other hand, when the operation command input voltage exceeds a second predetermined voltage level, a level shift voltage for initiating a soft start is generated, which enables execution of a soft start of the power supply unit without increasing its consumption current and reduction of the number of its terminals.

Three-dimensional image display device, method of manufacturing the same, and three-dimensional image display method

電気光学装置の製造方法、電気光学装置、電子機器、および圧着装置

(57)【要約】 【課題】 電気光学物質を劣化させることなく透明基板 の端子と電子部品の端子とを位置合わせした後、端子同 士を電気的に接続することのできる電気光学装置の製造 方法、電気光学装置、電子機器、および圧着装置を提供 すること。 【解決手段】 電気光学装置を製造するにあたって、ま ず、液晶３を保持する透明基板２を透光性ステージ１１ ０の上方位置に配置した状態で透光性ステージ１１０を 介して透明基板２０に光を照射することにより、透明基 板の透明な端子とフレキシブル基板４０の端子との位置 関係の観察を行い、この観察結果に基づいて端子同士の 位置合わせを行う。次に、透光性ステージ１１０上で透 明基板２０とフレキシブル基板２０を異方性導電材を挟 んで圧着することにより端子同士を電気的に接続する。 透光性ステージ１１０には、光が液晶３に照射されるこ とを防止する遮光部１１１が形成されているので、光に 含まれる紫外線によって液晶３が劣化することがない。

キャップ加圧治具

(57)【要約】 【課題】本体の製造コストを安価にするとともに、維 持、管理にかかる手間および費用も低減できるキャップ 加圧治具を提供する。 【解決手段】キャップ加圧治具５は、金属性のプレート ６に複数の突起部７ａをを成形したゴム７を接着したも のであり、突起部７ａをキャップ３の天面よりも小さい 形状とした。したがって、各突起部７ａがキャップ３の 天面を加圧するように集合基板１にキャップ加圧治具５ をセットしても、突起部７ａがキャップ３の天面からは み出さないので、突起部７ａの表面にキャップ３のへこ み痕がつくことがなく、基板２に対するキャップ３のず れを略確実に防止できるとともに、維持、管理にかかる 手間および費用が低減できる。

Insulated synchronous rectification DC/DC converter including a protection circuit to judge occurrence of a switching-incapable state

An insulated synchronous rectification DC/DC converter is provided. A feedback circuit drives a light-emitting element of a first photocoupler such that the output voltage V OUT of the DC/DC converter approaches a target voltage. A primary side controller is coupled to a light-receiving element of the first photocoupler, so as to switch on and off a switching transistor according to a feedback signal V FB . A synchronous rectification controller controls a synchronous rectification transistor. Upon detecting the occurrence of a switching-incapable state in the synchronous rectification transistor, a protection circuit instructs the primary side controller to stop the switching operation of the switching transistor.

Insulation-type synchronous DC/DC converter

The feedback IC is provided at the secondary side of the DC/DC converter and is coupled to the photo coupler. The error amplifier amplifies an error between a voltage detection signal according to an output voltage of the DC/DC converter and a target voltage, and draws a current according to the error from the input side of the feedback photo coupler via the photo coupler connection terminal. The abnormal detection circuit asserts an abnormal detection signal when an abnormal condition in a secondary side of the DC/DC converter is detected. The protection circuit is coupled to the photo coupler connection terminal, and acts on the feedback photo coupler via the photo coupler connection terminal so that a feedback operation by the error amplifier is invalid and an on-period of the switching transistor is shorten.

Insulation-type synchronous DC/DC converter

A synchronous rectifier controller is provided on a secondary side of an insulation-type synchronous DC/DC converter and controls the synchronous rectifier transistor. A driver circuit controls the synchronous rectifier transistor. A photo coupler connection terminal is coupled to an input side of the photo coupler. An error amplifier amplifies an error between a voltage detection signal according to an output voltage of the DC/DC converter and its target voltage, and to draw a current according to the error from an input side of the photo coupler via the photo coupler connection terminal.

Insulation-type synchronous DC/DC converter

The synchronous rectifier controller is provided at the secondary side of the insulation-type synchronous DC/DC converter and controls the synchronous rectifier transistor. The controller is coupled to the output of the feedback photo coupler and drives the switching transistor according to the feedback signal. The synchronous rectifier controller includes a driver circuit and an abnormal detection circuit and is configured as a single module. The driver circuit drives the synchronous rectifier transistor. The abnormal detection circuit detects an abnormal condition in the secondary side of the DC/DC converter. FAIL terminal is coupled to notify outside of an occurrence of the abnormal condition.

Insulated DC/DC converter

A primary-side controller comprises a feedback (FB) terminal coupled to a light-receiving element of a photocoupler so as to receive a feedback signal from the photocoupler, and a current detection (CS) terminal that receives a current detection signal that corresponds to a voltage drop across a sense resistor R S . The primary-side controller includes a current mode modulator that generates a control pulse based on the voltage at the FB terminal and the voltage at the CS terminal. The primary-side controller is configured to be switchable between a normal mode and a burst mode. When the electrical state of the DC/DC converter satisfies a predetermined condition, a burst mode adjustment circuit inhibits transition to the burst mode, or otherwise forces transition from the burst mode to the normal mode.

Power supplying module

A power supplying module that can be reduced in size is provided. The power supplying module includes a module body, and a lead-in unit provided on one surface of the module body. The lead-in unit includes a plate unit that fixes at least one sealing tube to the one surface of the module body, and at least one circumference holding unit that holds a circumference of the corresponding sealing tube. The plate unit is provided with, in a longitudinal direction of the one surface of the module body, a plurality of cable insertion holes, and a plurality of positioning portions that position the plurality of circumference holding units to the corresponding cable insertion holes.

Insulated synchronous rectification DC/DC converter

A synchronous rectification controller is arranged on the secondary side of an insulated synchronous rectification DC/DC converter. The synchronous rectification controller controls a synchronous rectification transistor M. An automatic shutdown circuit judges, based on the voltage V DS across the synchronous rectification transistor, whether the operation mode of a primary-side controller is a burst mode or a non-burst mode. When judgment has been made that the operation mode is the burst mode, the automatic shutdown circuit instructs a driver to suspend the switching of the synchronous rectification transistor M.

Image processing device, image processing method, non-transitory tangible medium having image processing program, and image-pickup device

An image processing device includes: a parallax control processing section performing an image processing for modifying a parallax magnitude, on each of a plurality of parallax images obtained through shooting from a plurality of respective view point directions different from one another, with use of shooting information related to a shooting condition for each of the parallax images.

Connector apparatus

A connector apparatus which can keep an electrical connection between signal pins in good condition; when a male member and female member are coupled together, first bumps of a first contact portion and second bumps of a second contact portion are brought into contact with each other, electrically connecting the first signal pins and second signal pins with each other. Measures are taken to bring tops and ridge lines of the second bumps into contact with lateral faces of the first bumps. Also, the first signal pins and second signal pins are configured to be pivotable. During connection, contact area is increased by contact between the lateral faces of the first bumps and the tops and ridge lines of the second bumps, causing rubbing between the lateral faces and the tops and ridge lines, and thereby pushing aside and rubbing off sticking spatter, oxide films, contamination, and the like.

Switching converter, control circuit thereof, AC/DC converter, power adapter and electronic device

A control circuit used in a switching converter having a coil, a switching transistor, and a detection resistor, includes: a current detection terminal configured to receive a detection voltage obtained by superimposing a voltage detection signal on a current detection signal; a sample hold circuit configured to sample-hold the detection voltage in an OFF period of the switching transistor to generate a sample hold voltage; a variable amplifier configured to amplify a difference between the sample hold voltage and the detection voltage; a duty controller configured to generate a pulse modulation signal; a driver configured to control the switching transistor based on the pulse modulation signal; and an overcurrent protection circuit configured to compare the detection voltage with a predetermined threshold voltage and change the pulse modulation signal to an OFF level of a switching transistor when the detection voltage is identical to the predetermined threshold voltage.

Insulation-type synchronous DC/DC converter

A synchronous rectifier controller is provided on a secondary side of an insulation-type synchronous DC/DC converter and controls the synchronous rectifier transistor. A driver circuit controls the synchronous rectifier transistor. A photo coupler connection terminal is coupled to an input side of the photo coupler. An error amplifier amplifies an error between a voltage detection signal according to an output voltage of the DC/DC converter and its target voltage, and to draw a current according to the error from an input side of the photo coupler via the photo coupler connection terminal.