multimeter
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AI overview
A multimeter is a handheld electronic tool that measures electrical properties like voltage, current, and resistance in circuits and devices. It's useful for troubleshooting electrical problems, testing batteries, and checking whether components are working properly.
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Article
24 sectionsContents
- History
- Precursors
- Avometer
- Pocket watch meters
- Vacuum tube voltmeters
- Introduction of digital meters
- Features
- Designs
- Analog
- Digital
- Components
- Probes
- Power supply
- Safety
- Characteristics
- Resolution
- Accuracy
- Sensitivity and input impedance
- Burden voltage
- Alternating current sensing
- Alternatives
- See also
- References
- External links
thumb|Analog multimeter thumb|Digital multimeter
A multimeter (also known as a multi-tester, volt-ohm-milliammeter, volt-ohmmeter or VOM, avometer or ampere-volt-ohmmeter) is a measuring instrument that can measure multiple electrical properties. A typical multimeter can measure voltage, resistance, and current, in which case can be used as a voltmeter, ohmmeter, and ammeter. Some feature the measurement of additional properties such as temperature and capacitance.