Buffered Detector (CB6669E)

This circuit was found in 1967 General Electric documentation. The transistors of the time can be replaced by modern equivalents.

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Crowbar with SCR (CB24574E)
This power supply protection circuit was found in the December 1978 Radio Electronics magazine. The SCR...
Light Activated Switch (CB14457E)
This circuit is from 1968 documentation. We can assemble it with more modern components such as a...
4 voltage reference using LEDs (CB22135E)
Using red LEDs with ignition voltages of the order of 1.5 V we can make a multiple voltage...