Motor photoelectric control (CB8022E)

This circuit was found in a 1964 Electronic Design. The components are from the era and the load is 60 W.

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Open door alarm (CB26229E)
This alarm goes off if someone leaves a door open. We found it in the Encyclopedia of Electronic...
Operational Pulse Generator (CB19092E)
The pulse duration is determined by the 100k resistor and the separation by the 1M resistor. The...
110 or 220 V 1 W Amplifier (CB12873E)
This circuit uses high voltage transistors to provide direct power from the 110 V power grid or a...