This power supply circuit was obtained from the February 1993 Radio Electronics magazine. The integrated circuit and power transistors must be provided with heatsinks.
This circuit takes advantage of the temperature variation of the component with the air flow that...
Using a small speaker as a microphone, this 10-LED circuit was found in the March 1992 issue of...
This circuit is a four-quadrant multiplier using an LM3900. The circuit was found in the July 1988...