Found in Popular Electronics from the 90s, this circuit aims to drive a solar panel, constantly changing its position to follow the movement of the sun.
This high power dimmer uses a unijunction transistor to trigger the triac. The triac is choosen...
This frequency corresponds to musical note C3. Frequency accuracy depends on the accuracy of the...
This transformerless power supply uses an SCR as a regulator. It was found in a Popular...