This circuit for the power grid was found in the June 1969 Radio Electronics magazine. The SCR and diodes are rated according to the power of the controlled load.
This circuit is from 1950, from the time when some still called the crystal triode transistor. The circuit is...
Using the name of varactor this circuit was found in the Radio Electronics magazine of July 1982....
This high voltage switched generator circuit was found in a 70s American documentation. The...