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 ...

The basic schematic of an electronic transformer (ET) includes a traditional full-bridge rectifier, a self-oscillating chopping circuit, and an output-power transformer. The self-oscillating circuit ...

Hi guys, just a short article about a light dimmer switch that I opened a few days ago. I wanted a way to adjust the speed of a 220V fan and a friend of mine told me that I can use a regular and cheap ...

Fig. 1: The dimmer circuit schematic showing the filtering capacitors. Rob Atkinson, K5UJ, is an engineer out of Saint Charles, Ill., and one of the many readers who enjoy the DIY projects we feature ...

My new house is a fixer-upper, and on the to-do list were two dimmer switches that did not work. One fed overhead lights; the other fed the lamp in a ceiling fan. Once I pulled the ceiling fan dimmer, ...