This 4 1/2 digit digital voltmeter circuit was published in the April 1993 Electronics Now magazine. The circuit uses the integrated component of the time and has 5 voltage ranges.
This circuit was obtained from a 90s Radio Electronics. The integrated circuit used HAA11508 is not...
We found this circuit in an old General Electric documentation. In fact, PUTs are not common...
The circuit, shown in the figure, consists of an audio oscillator that generates signals between...