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 circuit is from a Radio Electronics from October 1970. The circuit uses transistors from that...
This circuit, found in a 1985 documentation, causes two incandescent lamps to flash alternately. The...
This circuit was found in a 1987 edition of the United States' Hands-On Electronics magazine. The...