We found this voltage multiplier circuit in a Radio Electronics magazine from December 1991. The high voltage transformer is an adapted flyback
This squelch is intended to remove hiss from receivers when no signal is received. The circuit is from a...
This 1970 circuit triggers a load when it receives a signal. Components are common and SCR admits...
This circuit can generate signals from 100 kHz to 1 MHz depending on the L1 coil. For the medium...