Automobile headlight circuit principle
Car headlight circuit has switches, lines, fuses, relays and other components, fuse control relay of large current, switch control relay of small current, excuse me this small current has fuse control? Please give me a specific explanation. Thank you
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The figure shows the auto headlight control circuit. The controller is composed of a single stable delay circuit (IC1, Rl, R2, RD, C1), multiple vibrators (IC2, R3, R4, C2), integrated voltage regulator circuit IC3(7812), V-MOS power drive tube BG2, BG3 and so on, respectively driving the two headlights of the car.
The controller is powered by automotive battery +24V and provides DC voltage of VDD=+12V for IC1 and IC2 after voltage regulation by IC3. When the front side is not moving in the same direction, the photosensitive resistance RD is high because it is not exposed to light, and the corresponding IC1 is reset due to the high level of the foot and the low level of the foot .
