Solar intercom (CB20503E)

This circuit can be used in demonstrations or science fairs. The circuit uses headphones and can be powered by solar cells.

Touch switch 4013 (CB15776E)
With a touch of the sensor, the output of the 4013 changes state from high to low or vice versa. In...
LM383 8W amplifier (CB10902E)
The traditional circuit was taken from a French magazine Radio Plans that no longer exists but can...
TV Transmitter (CB17608E)
The coil of this analog composite video signal transmitter is formed by 6 or 7 splashes of 26 or...