This traditional crystal oscillator configuration can use any CMOS gate configured as an inverter. R1 has values from 1 to 5 M ohm and R values around 10 k.
We found this transistorized circuit in a 1985 documentation. The circuit can operate with...
We found this small audio amplifier in the November 1999 issue of Electronics Now magazine. The...
This low power circuit for the FM band was found in a spy book from the 90s. The tunnel diode is...