Common gate stage (CB7470E)

This circuit for FET was obtained from a 1977 Radio Handbook. The input impedance is 150 ohm. The output is high impedance.

Digitally controlled rectangular oscillator (CB21129E)
Found in American documentation from the 90s, this circuit has the signal frequency determined by...
Efficient trigger (CB21470E)
This two-transistor regenerative switch works as an excellent trigger for SCRs and other devices that...
27 MHz Receiver (CB18516E)
This receiver for listening to headphones and 2-battery power was found in Japanese documentation from the...