This circuit is intended to recover a very weak signal at a receiver, for example, a CW signal or a tone signal. The circuit is from a Popular Electronics from the 90s.
The SCR sector of this circuit can be powered by high voltage AC and instead of the LEDs we can...
This powerful 50-joule xenon flasher was found in Ferranti's 1965 documentation. The circuit makes use...
This circuit was found in RCA and General Electric documentation from the 1980s. The circuit has...