Voltage-controlled oscillator voltage compensation circuit
This invention belongs to the circuit filed and provides a voltage-controlled oscillator voltage complementary circuit. A precise reference work voltage is provided for the voltage controlled oscillator voltage compensation circuit through a precise reference voltage stabilizing diode, resistance of a voltage regulation module is controlled to vary as temperature changes, voltage at a voltage output end of the voltage regulation module is further controlled to vary as temperature changes, a voltage that varies as the temperature varies is output to the voltage controlled oscillator for voltage compensation, so that the voltage controlled oscillator can maintain stable output frequency when the temperature changes. As a result, problems that the voltage controlled oscillator has large changes in frequency when the temperature varies under control of a fixed work voltage, the debugging is difficult, and device parameters are inconsistent are solved. 1. A voltage controlled oscillator a voltage compensation circuit, respectively, is connected with the power supply and voltage-controlled oscillator, the voltage controlled oscillator comprises an operating voltage input terminal, a ground terminal and the input end of the compensating voltage, characterized in that the voltage controlled oscillator voltage compensating circuit comprises: 1st end is connected with the power supply, the voltage compensating circuit for the voltage controlled oscillator to provide the over-current protection of a current-limiting resistor R1; Negative electrode and the current-limiting resistor R1 is connected with the end of the 2nd, positive ground, for the voltage-controlled oscillator voltage compensation circuit and voltage controlled oscillator provides precision reference the operating voltage of the DZ1 precision reference voltage regulator tube; and Input end is connected to the current-limiting resistor R1 and the precision reference voltage regulator tube DZ1 public connection end and the input end of the operating voltage of the voltage controlled oscillator, the ground and the grounded terminal of the voltage controlled oscillator is connected to the to a total, voltage output end of the compensating voltage of the voltage controlled oscillator input, output a changes according to the change of the temperature voltage to the voltage-controlled oscillator control voltage regulation module. 2. Voltage-controlled oscillator voltage compensation circuit according to Claim 1, characterized in that the control voltage regulation module comprises: Thermistor RT1, thermistor RT2, thick-film resistor R2, thick-film resistor R3, thick-film resistor R4, and thick film resistor R5; The stated thermal resistor RT1 1st end of the control voltage regulating the input end of the module, the thermal resistor RT1 of the 2nd end of the electric resistance R2 of the end of the 1st, the electric resistance R3 of the thermal resistor RT1 end 1st 1st end of, said thick film resistor R3 and the 2nd end of the electric resistance R2 of the thermistor RT2 co-connected end of the 2nd 1st end of the oil and the resistance R5 of the end of the 1st, the electric resistance R2 with the electric resistance R3 to the control of the public connection the voltage output end of the voltage regulation module, the thermistor RT2 oil 2nd end of the resistance R4 of the end of the 1st, said thick film resistor R5 of the end is connected with a 2nd electric resistance R4 of the end of the 2nd, the thick film resistor R5 and the electric resistance R4 to the control of the public connection end of the grounded terminal of the voltage regulation module. 3. Voltage-controlled oscillator voltage compensation circuit according to Claim 2, characterized in that the stated thermal resistor RT1 and the thermistor RT2 respectively is a negative temperature coefficient thermistor. 4. A frequency modulated signal transmitter circuit, and the audio frequency signal source is connected to the, including a voltage-controlled oscillator and is connected with the voltage controlled oscillator of the frequency modulated signal transmitting module, the voltage-controlled oscillator comprises an operating voltage input, the compensation voltage input terminal, a ground terminal, a signal output end and input end of the signal, the operating voltage of the voltage controlled oscillator input terminal and the signal input end of the one end of the same, characterized in that said frequency modulation signal transmitter circuit further comprises: 1st end of the signal input end of the voltage controlled oscillator is connected with the, end of the 2nd audio signal source is connected to the filtering capacitor C1; and With the voltage-controlled oscillator is connected with the signal input terminal, to control the voltage-controlled oscillator frequency stabilization of the voltage-controlled oscillator voltage compensation circuit. 5. FM signal transmitter circuit according to Claim 4, characterized in that the voltage controlled oscillator voltage compensating circuit comprises: 1st end is connected with the power supply, the voltage compensating circuit for the voltage controlled oscillator to provide the over-current protection of a current-limiting resistor R1; Negative electrode and the current-limiting resistor R1 is connected with the end of the 2nd, positive ground, for the voltage-controlled oscillator voltage compensation circuit and voltage controlled oscillator provides precision reference the operating voltage of the DZ1 precision reference voltage regulator tube; and Input end is connected to the current-limiting resistor R1 and the precision reference voltage regulator tube DZ1 public connection end and the input end of the operating voltage of the voltage controlled oscillator, the ground and the grounded terminal of the voltage controlled oscillator is connected to the to a total, voltage output end of the compensating voltage of the voltage controlled oscillator input, output a changes according to the change of the temperature voltage to the voltage-controlled oscillator control voltage regulation module. 6. FM signal transmitter circuit according to Claim 4, characterized in that the control voltage regulation module comprises: Thermistor RT1, thermistor RT2, thick-film resistor R2, thick-film resistor R3, thick-film resistor R4, and thick film resistor R5; The stated thermal resistor RT1 1st end of the control voltage regulating the input end of the module, the thermal resistor RT1 of the 2nd end of the electric resistance R2 of the end of the 1st, the electric resistance R3 of the thermal resistor RT1 end 1st 1st end of, said thick film resistor R3 and the 2nd end of the electric resistance R2 of the thermistor RT2 co-connected end of the 2nd 1st end of the oil and the resistance R5 of the end of the 1st, the electric resistance R2 with the electric resistance R3 to the control of the public connection the voltage output end of the voltage regulation module, the thermistor RT2 oil 2nd end of the resistance R4 of the end of the 1st, said thick film resistor R5 of the end is connected with a 2nd electric resistance R4 of the end of the 2nd, the thick film resistor R5 and the electric resistance R4 to the control of the public connection end of the grounded terminal of the voltage regulation module. 7. FM signal transmitter circuit according to Claim 4, characterized in that the stated thermal resistor RT1 and the thermistor RT2 respectively is a negative temperature coefficient thermistor.