This symmetrical power supply uses two old filament transformers. The circuit was obtained in a documentation from the 80's and the diodes can be 1N4002.
This simple pole search or neon probe for the 110 V or 220 V power grid has nothing unusual, being...
This transmitter was found in an old publication on espionage. It applies a signal of a few...
Maxim MAX20056B 6 Channel High Brightness LED Controller Maxim Integrated makes available through...