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.
Although indicated in the original publication of the 1980s as a capacitance switch, the circuit...
This amplifier step with a transistor has an input impedance of 100k to 10 M. The transistor can be any...
This circuit was obtained from an English magazine from 1977. The magazine no longer exists, but...