This 80's circuit uses a germanium transistor like the AC121. The circuit has an output transformer of the type found on many transistor radios of the time.
We found this relaxation oscillator in a 1967 General Electric documentation. The frequency is given...
This circuit is interleaved with the source of a portable AM or FM radio previously tuned to a...
This circuit produces a signal that has the waveform of the sound produced by or near the banjo....