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.
September 2017 - Texas Instruments DRV5032 Hall Effect sensors, an ultra-low power digital switch...
This circuit was found in a 1990 Electronics World magazine. The circuit can be mounted today by...
This circuit produces low power flashes in a LED. Frequency is adjusted by P1 and depends also on...