Found in the August 1993 Electronics Now magazine, this circuit employs two symmetrical source 741 op-amps. The output is fed to a true RMS measurement circuit.
We found this circuit in the March 1992 issue of Radio Electronics magazine. The circuit has a...
The circuit presented may use any general purpose transistor. The indicator is an LED and...
This unusual audio amplifier configuration was obtained in a 1974 documentation. The PNP...