This powerful inverter provides a high-quality sine wave signal. I found it in a Radio Electronics issue from April 1991. The output power is 40W
This two-channel bargraph meter uses a single KAA2281 integrated circuit. Found in the January 1991...
This 80's circuit, suggested in Texas Insrtruments documentation, uses a Hall effect sensor. The...
A negative pulse applied to the input of the circuit shown in figure bellow turns on the relay....