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.
The signal detection in this two-band receiver is made by the gate or gate of the field effect...
This circuit generates a frequency modulated tone with excellent power. Other power MOSFETs can be...
This circuit works as a buffer (isolation amplifier) or digital amplifier with an output of...