LED Bulbs - Hackaday
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This teardown of a latest greenback store example shows that value-slicing has managed to shave even more off what was already wanting like a market saturated with backside-greenback design. The electrical elements inside this glowing mannequin of cost-slicing consists of 1 PCB (beforehand-seen dollar store LED bulb examples had two), eleven LEDs, one bridge rectifier, two resistors, and a controller IC. A wirewound resistor apparently also serves as a fuse, just in case. IC to see what lurks inside, and the result's shown right here. A hundred Volts DC that the bridge rectifier and huge electrolytic cap present to it, and it’s each low-cost and clever in its own method. The highest half is a giant transistor for chopping the voltage and the underside half is the easy management logic