Active with the output at the high level, this oscillator was found in November 1984 Radio Electronics magazine. The supply can be between 3 and 12 V and the output signal is rectangular.
This circuit uses an audio output transformer found in old transistor radios. Power output is...
Found in a 1967 Electronics World, this circuit uses unusual components today. The transformer has a high...
This circuit consists of a charge pump with positive input and negative output. We find it in a...