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.
This interesting low current circuit uses only one diode to obtain a full wave rectified signal....
The circuit shown is from a 1993 documentation. It uses two FETs in an oscillating configuration that...
This circuit serves to prevent devices powered by 6 V from being left with a power cut. The...