This circuit was found in an old documentation for radio amateurs. The circuit makes use of an uncommon integrated today. The circuit converts telegraph signals to be used on the computer.
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...