This 5-range current measurement circuit was found in the September 1989 issue of Radio Electronics magazine. It uses an AC/DC converter.
The purpose of this circuit is to enable testing of transistors using a common multimeter. With the...
In the figure we have a circuit that allows us to obtain a variable voltage of approximately 0.5 to 25 V...
We find this circuit in American documentation from the 1980s. It consists of a frequency folder...