This grounding test circuit was found in an American 80's documentation. The circuit is for the 110 V power grid but can be changed to the 220 V power grid.
In applications where there is no danger of any contact with live points in the circuit by the...
This circuit was found in the May 1989 issue of Radio Electronics magazine. The components can be...
The frequency of this oscillator is given by the coil and by C1/C2. The circuit supports any...