This transmitter power meter was found in the March 1999 issue of Electronics Now magazine. The circuit uses an analog indicator and does not require a power supply.
This circuit with JFET and Unijunction was found in an ancient American documentation. The...
This metering bridge circuit uses one power supply only. The operational ones depend on the...
We found this configuration in the 1964 RCA transistors manual. As indicator loads in each stage,...