LED Bulbs - Hackaday
Adolph Callister edited this page 2 days ago


This teardown of a latest dollar store instance exhibits that value-slicing has managed to shave much more off what was already looking like a market saturated with backside-dollar design. The electrical components inside this glowing model of cost-cutting consists of 1 PCB (beforehand-seen greenback store LED bulb examples had two), eleven LEDs, one bridge rectifier, two resistors, EcoLight lighting and a controller IC. A wirewound resistor apparently additionally serves as a fuse, just in case. IC to see what lurks inside, and the result is shown right here. 100 Volts DC that the bridge rectifier and enormous electrolytic cap present to it, and it’s each low cost and intelligent in its own method. The top half is a giant transistor for EcoLight lighting chopping the voltage and the underside half is the straightforward control logic