Found in an Electronics World of 1968, this circuit is indicated for applications in photography making the control of a camera aperture. The components are from the time.
This circuit that uses a mechanical tuning fork was found in Radio Electronics magazine from June...
In the presence of the supply voltage of a 3 to 12 V circuit, this circuit causes the LED to...
This circuit supplies a voltage of 110 V from car battery with 110 V x 100 W output. Transformer...