Light out switch (CB8331E)

This highly sensitive circuit was found in a 1967 General Electric SCR manual. Equivalent components can be used.

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Nicad Protected Charger (CB6401E)
This circuit was found in a European documentation from 1964. The circuit makes use of components of...
7-segment LED display driver (CB7557E)
Found in American documentation, this circuit can be used as a shield. The technology is CMOS and...
20 Hz Oscillator with the 555 (CB25512E)
This precision oscillator was found in the October 1992 issue of Radio Electronics magazine. The...