Multimeter facts for kids
A multimeter or a multitester is an electronic measuring tool that is a combination of several tools in one unit. It usually includes an ammeter, voltmeter, and ohmmeter. Digital multimeters are sometimes called DMM too.
Modern multimeters can be used to measure electrical quantities other than current, resistance and voltage. For example, they can be used to measure frequency, capacitance, transistors Hfe and temperature.
The multimeter can make many tests, so it is often called "multitester". When measuring resistance it acts as an ohmmeter, showing ohms. For volts it would be a Voltmeter. Sometimes it is called a mixture of things like Volt/ohm meter or VOM. Most meters can measure volts, amps, and resistance.
How it can be measured
The multimeter can be used to measure the voltage of a battery. It can also be used for measuring the voltage across two points in a circuit. The Voltmeter is placed in parallel between the positive and negative terminals of the battery. It can also be used to measure resistance and amps hence the name of some meters "Voltmeter, Ohmmeter, and Amperage".
Images for kids
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An analog multimeter, the Sanwa YX360TRF
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1920s pocket multimeter
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Avometer Model 8
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A pocket-watch-style meter made in the 1930s. It can measure voltage, current, continuity and the heating element of vacuum tubes.
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A 4+1⁄2-digit digital multimeter, the Fluke 87V
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A clamp meter
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Display face of an analog multimeter
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A bench-top multimeter, the Hewlett-Packard 34401a.
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USB-powered multimeter for examining battery charging of portable electronics.
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Inexpensive analog multimeter with a galvanometer needle display
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Multimeter test leads
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An example of input protection on the CAT-IV rated Fluke 28 Series II Multimeter
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See also
In Spanish: Multímetro para niños
