Last Update: 10 Jan 2021

What Is Digital Multimeter?

James Kelly
James Kelly

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A multimeter can be used not only in the electrical circuit but also in the automobile. If you don’t know what is a digital multimeter, you have come to the right place. The main objective of using a multimeter is to observe numerical values on the display while taking real time readings.

In the control panel of the multimeter, several functions may exist based on the purpose of the meter. At least 2 common features are seen in almost every device. Those are voltage and current. The readings can be taken in different units also and some devices may support the wavelength vision.

Now Let's Talk About What Is Digital Multimeter?

Components Of A Digital Multimeter

The list of components varies from device to device. It completely depends on the price and the measuring capacity. We have collected some of the basic and extra ordinary features that might or might not be seen in every device.


To show all the available output in a definite place, the display is used. You know that a light-emitting diode is one of the best electromagnetic waves to see sharp. So in the display section, you will find an LCD-display with brightness control.

AC Determination Section

Here AC refers to the alternative-current. We use this kind of current in our houses, school, office, etc. In this section, 2 types of measurement can be taken which is mentioned below,

AC Current:

To measure alternative current there is a wide and moderated range included in this section. As AC has a dual-channel, it shows 2 outcomes. The measurement of milliampere can also be determined.

AC Voltage:

For activating this section, the voltage terminal must be activated first. Then change the mode to the AC-voltage section. The range of voltage measurement is around 20 mega-volt to 15 microvolts.

Resistance Discernment Section

The unit of the resistance is the ohm. It shows the resistivity of an electric circuit or wire. So the delay in the flow of current can also be determined with the help of it. You need to learn about digital multimeter properly, before using this section. The multimeter can also measure the values from a rheostat.

DC Output Options

Here DC refers to the direct current. This type of current is mainly used in the battery and the direction of this property is one-way. In this section, 2 measurements can be taken by the meter,

DC Current:

To measure the current in this section, you don’t need a dual channel. As the direction is one-way, a single dedicated channel is enough. The range of the measurement is around 20 milliampere to 15 microamperes.

DC Voltage:

This kind of voltage can be found in cell batteries. To activate the mode, you need to enter the voltage terminal first. Then the spherical circle needs to be turned to the DC section.

Diode Tester

A diode is a mixed substance or gateway for the current or voltage to change their direction with proper control. To make this kind of substance, 2 different materials are used. This section may not be available on every device.

Mathematical Operator Key

This feature is also uncommon. By this operation key, you will be able to determine the minimum, maximum, and average values from the readings. To operate this key, there may be an additional shift key to trigger it.


Without the terminal, all the options on the multimeter are useless. Because the connectivity of the terminals is the bridge between the electrical pulse and the multimeter. The number of terminals depends on the quality and manufacturing company of the meter. 3 types of multimers are generally seen in almost every device,

Ammeter Terminal:

By this terminal, the determination of both AC and DC can be obtained with the ampere unit. But the current can flow in 2 connectivity modes such as series and parallel. The ampere will only be functional if the connection is in series.

Ground Terminal:

This terminal is mainly for safety purposes. The entering electrical pulse can destroy the machine’s functionality. So the extra pulse is sent to the ground by the ground terminal.

Ohm & Voltage Terminal:

This terminal is used to calculate the measurement of voltage by the unit volt. The resistance is also calculated by this with the unit ohm. While using this section you need to make sure the ground terminal is connected. Because extra voltage can burn the device.

Final Verdict

What is a digital multimeter? It is simply a device to measure the tiny values of electro pulse momentum. As electricity has a fast velocity, it needs to be captured with a high-tolerance electronic device. A multimeter has all the requirements to measure any electrical readings and displays it vividly.

What Is Digital Multimeter? Functions And Using Criteria 1