17-10-2016 дата публикации
Номер: KR1020160120133A
Принадлежит:
The present invention relates to a bidirectional data transmission circuit of a multi-drop mode, wherein the bidirectional data transmission circuit comprises: a main control unit which comprises an H-Bridge circuit composed of four switching elements to provide power and transmit data and a data detection reception unit connected to the H-Bridge circuit and including a resistance circuit inside, for detecting data by the current of the H-Bridge circuit; and a terminal unit which comprises a bridge diode circuit, connected to the H-Bridge circuit of the main control unit and having a bridge diode structure, for continuously providing the power even if a polar voltage is inputted from the H-Bridge circuit, a data generation unit, connected to the bridge diode circuit, for generating data by controlling a loop current by resistance with a switching element, and a terminal unit power unit, connected to the data generation unit, for providing power. Accordingly, since the present invention ...
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