This is a very simple LED dimmer circuit which has 2 transistors, 1 resistor and 2 potentiometers. Typical segment displays LEDs consume around 25 mA for each segment and should be limited to this ...

Lots of modern phones use pulse width modulation, or PWM, to manage brightness. But what is PWM, why is it harmful, and what ...

If you’ve ever tried dimming a LED with a simple potentiometer, you know that the approach does not work very well. Just as with ordinary diodes, the voltage-current characteristic of LEDs is far from ...

Frank Hertel’s project: three individually dimmable LED lights. (Frank is the master of recycling; the wooden mounting pedestals are the panels from a decommissioned ATI console!) Thanks for your ...

Lights are an integral part of any home. With lighting being some of the important components in any home, users might be tempted to spice things up a little bit. Smart home systems are only now ...

There's a lot to like about this low-cost LED light bulb -- but how good is it on dimmer switches? Ry Crist Former Senior Editor / Reviews - Labs Originally hailing from Troy, Ohio, Ry Crist is a ...