Tunnel diode delay (CB21431E)

With two cascading tunnel diodes, this circuit found in a 196 General Electric documentation provides capacitor-dependent delays.

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Resolution enhancement circuit for bridges (CB25895E)
This circuit allows you to modify the resolution of a measurement bridge. It was found in the...
Three Phase AC Motor Control (CB12953E)
In the figure we have a three-phase AC motor control for voltages up to 600 V or 1200 V depending on...
CK722 Transmitter (CB23642E)
This small experimental transmitter with the CK722 transistors was found in Radio Electronics...