This 5-range current measurement circuit was found in the September 1989 issue of Radio Electronics magazine. It uses an AC/DC converter.
Other CMOS gates can be used in this sensor, which we found in the July 1995 Electronic Now...
This circuit is from the American magazine that no longer exists Science & Electronics,...
Using the 4046 PLL we found this circuit in the December 1989 Radio Electronics. The circuit...