This RF circuit measures transmission power from 0.25 W to 10 W. The maximum frequency depends on the diode and the gauge is an analog instrument. A multimeter can be used instead.
This excellent gain short and medium wave antenna was found in the June 1994 issue of Electronics Now...
This circuit was found in an old Radio Electronics, but can still be assembled as the components are...
This circuit simulates the signal produced by a muscle, serving to adjust medical equipment. The circuit...