This circuit was found in the July 1969 Radio Electronics magazine. The circuit controls resistive loads and universal motors with power according to the SCR used.
Depending on the output transistor used, this transmitter can provide power from 1 to 3 W. The...
The SCR sector of this circuit can be powered by high voltage AC and instead of the LEDs we can...
This passive volume compressor was found in documentation from the 1980s. It needs a good...