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 simple circuit was found in the Spanish magazine “Todo Electronica”, in an edition of 1996....
The basis of this circuit is a National Semiconductor operational amplifier that functions as a...
A high-frequency square wave oscillator using an LC-tuned circuit is shown here. The upper...