Ring counter (CB6605E)

Suggested by General Electric in a 1967 publication, this circuit uses the D13T1, an uncommon SCR today. This component is triggered by the anode.

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Limiter Amplifier (CB12468E)
This amplifier for effects on musical instruments can be mounted with BC549 transistors. The...
Proximity sensor (CB9570E)
This circuit was found in documentation from the 1980s. The circuit uses several components of the...
Simple Optical Modulator (CB14680E)
The presented circuit can use an equivalent transistor like the BC548. The configuration, which [is...