Thermostatic control with mercury sensor (CB21388E)

This former temperature sensor with a mercury sensor was found in a General Electric documentation from 1967. The SCR must match the load.

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Simple Vibration Alarm (CB15739E)
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Soft shutdown with TDA1185A (CB14542E)
We found this circuit, which should only be used with incandescent lamps. In the Motorola Linear...
Rhythmic LEDs (CB12357E)
The circuit shown can be connected in parallel with the speaker of a sound system. Its purpose is to...