With this simple circuit it is possible to simulate a telephone line for carrying out repairs on telephone sets. The transformer must be 36 V and the diode can also be 1N4004.
For triggering high-powered loads connected to the power grid, nothing better than using TRIACs. For...
This simple circuit tests electrolytic capacitors from 1 uF with a working voltage above 12 V. The...
This circuit detects changes in magnetic flux in a coil as an external magnetic field moves. The...