We found this circuit in a 1977 factory documentation. The operational amplifiers can be 741 and the symmetrical power supply. Capacitors can be changed for operation at other frequencies.
We found this circuit in a Motorola documentation from 1978. The circuit is based on the LM324...
This crystal-controlled oscillator can generate signals up to a few dozen megahertz. We found it...
We found this circuit in the October 1987 Radio Electronics magazine. The circuit uses an...