Remote potentiometer (CB8326E)

This circuit came out in a 60s RCA documentation. The circuit uses common lamps and LDRs but can be implemented with LEDs.

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Dimmer (CB5270E)
This dimmer for incandescent lamps was obtained from an American 1990s documentation. The circuit...
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This circuit can be used in physics experiments, in ionization and in several other applications. The...
1-Transistor MW Radio (CB11576E)
This experimental AM radio circuit was found in a 1979 English magazine. It can be fitted with a...