Multiplication and sampling circuit (CB8865E)

This circuit was found in a 1968’s General Electric documentation. The circuit uses components from that time.

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Police Band Receiver (CB23560E)
This circuit is from Radio Electronics magazine from June 1958. The tuned range at the time was...
1 kHz Pass Through Filter (CB19098E)
Capacitors determine the frequency range together with resistors, and these components can be...
Dimmer with triac (CB26092E)
We recommend adding a 470-ohm resistor in series with the potentiometer in this dimmer circuit...