Other versions exist on this site from various publications. This one is from the Radio Electronics Experimenter from 1990. The bargraph circuit uses the UAA170.
The integrated circuit used is no longer common today. The circuit is from Motorola's 1990 Linear...
This circuit from the 90s, found in an Electronic Engineering can be used as a shield since its...
Turns Ratio Between Windings Impedance Ratios 100:1 10 000:1 99:1 9 801:1 98:1 9 604:1 97:1 9...