Universal speed control (CB20783E)

This control, which may appear in other versions on this site, was found in documentation from the 1970s. SUS is an uncommon component today.

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Bicolor Sonic Sequential (CB17019E)
This circuit was found in a 1995 documentation. It drives a set of sequential LEDs from the sound...
Darlington Stage with Feedback (CB975E)
This circuit was found in a 1968’s publication and uses germanium transistors. Equivalents can be...
Linear Ramp Generator MC1455 (CB14585E)
The integrated circuit used is equivalent to the 555 and the transistor can be the BC558. R1 and...