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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1kHz Triggered Oscillator 555 (CB25513E)
We found this circuit in the October 1992 Radio Electronics magazine. The frequency is given by C1...
PNP Mini Flasher (CB17511E)
This conventional LED flasher circuit has a configurable multivibrator configuration with PNP...
1-cycle-per-30-day oscillator (CB26073E)
This extremely slow circuit produces one pulse per month and can be used in a timer. We found it...