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Introduction

A multimeter tests continuity. It also can measure the amount of alternating current (AC or household current) or direct current (DC or battery current) in a plugged-in or live circuit. It can check voltage, too. For example, a multimeter can verify that there are about 120 volts in an AC circuit or that a 9-volt battery is fully charged. In addition, a multimeter can check resistance. A continuity tester checks resistance, but answers YES or NO. A multimeter checks resistance and reports how many ohms (the measurement of resistance) a circuit has.

Multimeters are relatively inexpensive. The analog unit shown was $10 and the digital multimeter was $20, though you can pay $50 or more for more accurate models. The ones used in this website are sufficient for most electrical tests.

Analog multimeters measuring conductivity/resistance must first be adjusted for a zero reading. Check instructions that come with a new multimeter.

You can use a multimeter to test motors, switches, controllers, and many other electrical gadgets. Specific instructions will come with the multimeter (also called a volt-ohmmeter or VOM) you purchase.

Tools

Parts

  1. Select the function (ACV, DVC, RESISTANCE) and the range (maximum reading expected). Select the function (ACV, DVC, RESISTANCE) and the range (maximum reading expected). Select the function (ACV, DVC, RESISTANCE) and the range (maximum reading expected).
    • Select the function (ACV, DVC, RESISTANCE) and the range (maximum reading expected).

  2. Connect the probes to the cord or appliance component.
    • Connect the probes to the cord or appliance component.

  3. Interpret the reading. The Fix-It Guides and the device's owner's manual will tell you what to expect — and what to do about it.
    • Interpret the reading. The Fix-It Guides and the device's owner's manual will tell you what to expect — and what to do about it.

Conclusion

Thanks for joining the Fix-It Club!

Dozuki System

Member since: 09/24/2009

1 Reputation

44 Guides authored

One Comment

Really Informative….!

Thanks for sharing.

sofia joy - Reply

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