DVM Abbreviation

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Popular abbreviations of DVM:

Searching for DVM abbreviation / DVM full form leads to different results in different categories. The below table illustrates the popular acronyms among them.

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What does DVM mean?

DVM is the short form for Digital Voltmeter. A voltmeter is a device that measures the electrical potential difference between two distinct points. The voltage measured by the voltmeter can either be AC or DC.

A digital voltmeter displays the value of voltage as discrete numerical figures whereas its counterpart, analogue voltmeters, use pointers to depict the reading of voltage. It does so using a converter that converts the analogue voltage into digital voltage.

Working on a digital voltmeter

A digital voltmeter is based on the conversion of analogue signals into a series of pulses. The conversion process begins with the application of input voltage at the pulse generator which generates a pulse from the input voltage.

The width of the pulse is directly proportional to the input signal. The output generated from it is fed into the AND gate in one leg. The other leg of the AND gate gets the original input signal as its output.

The AND gate now produces a train of pulses which is fed into an inverter which inverts the positive train of the pulse into negative. The counter counts the triggers within the duration and this count is displayed as the voltage by the display.

Types of Digital Voltmeters

• Integrating Digital Voltmeter
• Ramp Type Digital Voltmeter
• Continuous Balance Digital Voltmeter
• Successive Approximation Digital Voltmeter

Advantages of DVM

• The primary advantage associated with them is the reduction of error. The observation error is minimized which is comparatively high in the case of analogue voltmeters.
• Easy and faster readings can be done
• Parallax and approximation errors are eliminated.
• Compact and portable in nature
• Low power consumption
• Higher input impedance
• More stable and reliable than its counterpart.

Disadvantages of DVM

• If the input voltage is increased beyond a threshold, the voltmeter is prone to damage
• The device might get heated up during usage.
• It needs external power since the display is powered by an external source.
• It makes spotting of transient voltage spikes harder.