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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Protected voltage regulator (CB8359E)
Suitable for 12.6 V voltages at the output and currents of 2 A, this circuit was found in a 1965...
LM3600 Amplitude Modulator (CB25146E)
This circuit was found in the July 1988 issue of Radio Electronics magazine. It makes use of an...
Photo alarm with the 555 (CB6854E)
This traditional configuration with the 555 was obtained in an 80s Hands-On Electronics. The relay...