Described in the December 1969 Radio Electronics magazine, this circuit is intended to supply the previous circuit. The circuit is not isolated from the power grid.
What this circuit does is to agitate a servo at a frequency of 0.25 Hz, which can be used in...
This circuit is suitable for SSB modulation and was obtained from an amateur radio documentation from...
This telegraphy circuit generates an audio tone from a pure RF carrier. We found it in a...