Every fixer should know their method around a multimeter, which has just north of a zillion provides for testing electronic components and circuits. Follow follow me to master the 3 most simple functions of a multimeter.

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Part 1: testing Continuity

Part 2: testing Voltage

Part 3: testing Resistance


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A continuity test tells united state whether two things space electrically connected: if miscellaneous is continuous, an electric present can circulation freely indigenous one end to the other.


If there"s no continuity, it method there is a rest somewhere in the circuit. This can indicate anything native a blown fuse or negative solder joint to an incorrectly wired circuit.





To begin, make certain no existing is running with the circuit or component you desire to test. Move it off, unplug that from the wall, and also remove any type of batteries.


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Switch on her multimeter, and set the dial to continuity mode (indicated by an icon that looks favor a sound wave).


The multimeter exam continuity by sending a small current through one probe, and also checking even if it is the other probe obtain it.


If the probes are connected—either through a continuous circuit, or by poignant each other directly—the test present flows through. The display displays a value of zero (or near zero), and the multimeter beeps. Continuity!


To finish your continuous test, ar one probe in ~ each finish of the circuit or ingredient you desire to test.


As before, if your circuit is continuous, the display screen displays a worth of zero (or close to zero), and also the multimeter beeps.


If the display displays 1 or OL (open loop), there"s no continuity—that is, there"s no path for electric current to circulation from one probe to the other.


If her multimeter doesn"t have actually a specialized continuity test mode, you deserve to still execute a continuity test.


In this mode, the multimeter sends a small current with one probe, and also measures what (if anything) is received by the other probe.


If the probes space connected—either by a constant circuit, or by poignant each other directly—the test present flows through. The screen displays a worth of zero (or close to zero—in this case, 0.8). Really low resistance is another method of saying the we have actually continuity.


To finish your continually test, ar one probe at each finish of the circuit or ingredient you desire to test.


Switch on her multimeter, and set the dial come DC voltage mode (indicated by a V with a right line, or the price ⎓).


Virtually all consumer electronic gadgets run on DC voltage. AC voltage—the sort that runs with the lines to her house—is considerably much more dangerous, and beyond the limit of this guide.


Most multimeters are not autoranging, an interpretation you will require to collection the correct variety for the voltage you intend to measure.


Each setting on the dial list the preferably voltage it can measure. So because that example, if you mean to measure much more than 2 volts yet less 보다 20, usage the 20 volt setting.

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If your selection was collection too high, you may not get a really accurate reading. Below the multimeter reads 9 volts. That"s fine, yet we deserve to turn the dial to a lower range to get a much better reading.