Without any dedicated buck converter/white crystal rectifier driver IC, you'll safely drive several customary Hi-efficient white crystal rectifier modules victimization the battery power out there in cars. Here may be a safe and easy white crystal rectifier driver designed for 12V cars.
Auto White LED Circuit Schematic
In the Automobile White crystal rectifier wiring, fastened transformer IC1 (7805) provides a gentle voltage of 5V across C2. Resistors R1 limits the present flow through the white crystal rectifier D1 (3v6/350mA) with the assistance of semiconductor T1 (and T2), i.e. parts R1, T1 (and T2) offer a relentless current to D1. Use a decent sink for T1. This crystal rectifier unit offers a relentless lightweight output for input voltages starting from eight to eighteen volts!
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