Found in an old Popular Electronics this circuit appears in other variations on this site and in this section. It uses a 7-segment common anode LED display as an indicator.
Some old multimeters have a high resistance scale that has an internal circuit powered by a 22.5 V...
Although it is a common configuration today, this circuit was taken from an old publication. The...
The circuit suggested in the figure differentiates the signal from the negative front of a...