Harmonic generator (CB8989E)

This circuit generates a 1296 MHz signal from 100 or 1,000 kHz crystals. We found it in an American documentation for radio amateurs.

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10 Hz to 10 kHz Voltage controlled oscillator (CB20600E)
This circuit was found in documentation from the 80s. The components are from the time, but the...
Oscillator with Relay (CB19779E)
We can make an oscillating relay producing a rectangular signal taking advantage of the inductance of...
Voltage Follower (CB16230E)
The circuit shown in the figure is a voltage follower, that is, an amplifier with unit gain. The...