Ring Counter with Timing (CB6613E)

This variable timing circuit was found in 1964 General Electric documentation. Circuit uses PUTs that are uncommon components today.

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Audio wattmeter (CB19768E)
The integrated circuits in this application are not very common today. One consists of an A / D...
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This CMOS oscillator circuit generates signals up to a few megahertz, depending on the capacitor value....
Quadrature detector (CB21753E)
This circuit was found in a 1977 American manual. The integrated circuit is from the time....