Binary Counter (CB6139E)

This General Electric circuit is from the 80's. The PUTs used in this meter are not common components today.

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Tunnel Diode Oscillaor (CB4602E)
The circuit shown in the figure can generate signals up to 1.6 GHz. Coil L1 and capacitor C2 are...
Square Oscillator (CB4847E)
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Broadcasting band amplifier (CB8404E)
Found in a 90s R-E Experimenters Handbook, this circuit amplifies signals from 100 Hz to 3 MHz....