需求
“Draw a 12 V automotive headlight circuit with a battery, fuse resistor, relay coil, switch and headlight load resistor.”
接著試試Add a second headlight load.Add an indicator lamp for the headlight switch.
這張圖裡有什麼
看懂背後的決策。
01
Use a relay to isolate the high-current load from the control circuit
02
Include a fuse close to the battery for overcurrent protection
03
Place the headlight switch on the ground side of the relay coil for safety
Reusable when wiring auxiliary lights, horns, or any high-current automotive accessory that requires remote switching.