Near light and far light control circuit of automotive headlamp
A technology of automobile headlights and control circuits, which is applied in the electronic field and can solve problems such as complex structure of lamps and lanterns
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[0012] like figure 1 As shown, the far and near light conversion control circuit of the car headlights includes a single-chip microcomputer EM78P153, a three-terminal voltage regulator circuit, and a full-bridge power drive circuit.
[0013] One end of the low-beam limit contact switch S1 is connected to the P62 pin of the single-chip microcomputer EM78P153, one end of the high-beam limit contact switch S2 is connected to the P63 pin of the single-chip microcomputer EM78P153, and the two contacts of the far-low light conversion switch S3 are respectively connected to the single-chip microcomputer EM78P153 P64 pin and P65 pin are connected, where P64 pin is the low beam signal end, P65 pin is the high beam signal end, the other end of the low beam limit contact switch S1, the other end of the high beam limit contact switch S2, far and near The common end of the optical switch S3 and the GND pin of the single-chip microcomputer EM78P153 are connected with the negative pole of th...
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