This simple diode test appears at other points in this section. Or circuit can be adapted to use LEDs instead of ordinary lamps.
The purpose of this circuit is to sense the water level in the windshield wiper reservoir. The circuit...
This 3-channel configuration was found in a 1982 Selezione Radio magazine. The publication no...
This simple 60's receiver is powered by solar cells of the time. The transistor is made of...