A digital voltmeter is a gadget that measures voltage. It measures alternating current or direct current and shows the value immediately in numeric form rather than via pointer deflection. The abbreviation DVM stands for Digital Voltmeter. Andrew Kay invented DVM in 1954.
Numerous variables influence the measuring accuracy of a digital voltmeter (DVM). These include, but are not limited to, temperature, input impedance, and fluctuation in power supply voltage. As is well known, analog instruments produce results through pointer deflection on a continuous scale. On the other hand, a digital instrument produces results in the form of discrete numerals. As a result, precision and versatility are combined.
The DVM's input range can range from 1 V to 1000 V. Precision DVM has an input resistance of 1 G or more for voltages less than 20 V.
A digital voltmeter quantitatively displays the voltage values from a circuit. Initially, analog voltmeters were used to obtain voltage readings, in which a pointer or indicator moved across a scale in proportion to the circuit's voltage; later, digital voltmeters were introduced, which provide an accurate numerical display of voltage. This article will cover what a digital voltmeter is, how it works, including step-by-step functions, its various varieties, applications, and associated benefits and drawbacks.
A digital voltmeter measures the difference in electrical potential between two locations in a circuit. The voltage may be alternating current (AC) or direct current (DC). It measures the input voltage after converting it from analog to digital and displaying it in numerical format via a converter. The use of a digital voltmeter has improved the speed and precision with which readings are taken.
A Digital Voltmeter's operation can be classified into five functional divisions. They are as follows:
Fig. 2 – Diagram of the Basic Blocks of a Digital Voltmeter
Digital Voltmeter is broadly classified into four types. They are:
Applications of Digital Voltmeter
Fluke 106 Palm-sized Digital Multimeter
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