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.
Suggested by Hughes in 1968 documentation, this circuit makes use of a transistor matched pair and...
For inductive loads we have the configuration shown in the figure. Note that the opto-coupler...
We found this circuit in Japanese documentation from the 1960s. Transistors are types of the time...