A Ground Fault Indicator

This is a very simple circuit, but make sure you build it right! If you add a plug to this, make double sure it is wired with the Corre...

Mains Remote-Control

Pressing the push button of the transmitter, a sound and/or light alert is activated in the receiver. The system uses no wiring or radio f...

Heating System Thermostat

  This circuit is intended to control a heating system or central heating plan, keeping constant indoor temperature in spite of wide ra...

Auto Heat Limiter for Soldering Iron

  Usually a soldering iron takes a couple of minutes to get adequately heated up to melt the solder, after which the heat generated is m...