could be used but I found no simple circuits. My first thought was just to connect a series current limiting resistor and LED to the cathode so that the LED would light when the reference ...

Building a portable lamp with a 9V battery and LED bulb is a simple, creative DIY project ... an LED light strip or bulb, an on/off switch, wire, electrical tape or a soldering kit, and Velcro ...

This is a simple clap switch circuit with high sensitivity ... the latching relay greatly simplifies the circuit and provides a relay contact interface for driving a 115 or 230VAC load such as a light ...

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 ...