Making Digital Voltmeter, Ammeter Circuit Modules
Electrical parameters like voltage and current are inherently connected with electronics and with electronic engineers.
Any electronic circuit would be just incomplete without appropriate supply of voltage and current levels.
Our mains AC supply an alternating voltage at the potentials of 220 V, for implementing these voltages in electronic circuits we incorporate DC power adapters which effectively step down the mains AC voltages.
However, most power supplies don't include power monitoring systems in them, meaning the units don't incorporate voltage or current meters for displaying the relevant magnitudes.
Mostly the commercial power supplies use simple ways to display the voltages like a calibrated dial or ordinary moving coil type meters. These may be OK as long as the involved electronic operations are not critical, but for complex and sensitive electronic operations and troubleshooting, a hi-end monitoring system becomes imperative.
CIRCUIT DIAGRAM