Poptronics recommends this circuit for use in the car when the headlights are left on. The circuit uses a sensitive relay with contact current according to the headlights.
This dimmer for incandescent lamps was obtained from an American 1990s documentation. The circuit...
This circuit can be used in physics experiments, in ionization and in several other applications. The...
This experimental AM radio circuit was found in a 1979 English magazine. It can be fitted with a...