LED Bulbs - Hackaday
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This teardown of a recent greenback retailer example exhibits that cost-cutting has managed to shave even more off what was already trying like a market saturated with bottom-greenback design. The electrical parts inside this glowing mannequin of cost-cutting consists of 1 PCB (previously-seen dollar retailer LED bulb examples had two), eleven LEDs, one bridge rectifier, two resistors, EcoLight and a controller IC. A wirewound resistor EcoLight apparently additionally serves as a fuse, simply in case. IC to see what lurks inside, and the result is proven right here. One hundred Volts DC that the bridge rectifier and huge electrolytic cap present to it, and it’s both cheap and clever in its own way. The highest half is an enormous transistor for chopping the voltage and the bottom half is the simple management logic