Most commercial torchlights use three AA or AAA cells connected in series, which produces 4.5V to drive white LEDs using a current-limiting resistor. These flashlights do not drive the LEDs efficiently due to lack of a current-control circuit. Presented here is a LED Torchlight circuit that drives high, bright white LEDs from a single dry […]
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Credit- EFY. Published by Department of EEE, ADBU: tinyurl.com/eee-adbu
