This circuit was found in the March 1997 Electronics Now magazine. It uses a common analog indicator and the transistor is a general purpose one.
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...