This circuit was found in ancient American documentation. Equivalent operational amplifiers can be used. The power supply must be symmetrical. The circuit provides an average output.
This optically coupled circuit was found in the February 1968 Radio Electronics magazine. The...
We found this circuit in the April 1978 issue of Radio Electronics magazine. The power supply must...
This circuit supports several sets of coils and can oscillate from 1 to 44 MHz. The transistor is an old...