How To Check A Capacitor With A Fluke Multimeter

Uni t ut33c pocket digital multime.

How to check a capacitor with a fluke multimeter. The forward biased resistance of a good diode. By checking this box i agree to receive marketing communications and product offers by email from fluke electronics corporation transacting under fluke industrial or its partners in accordance with its privacy policy. The video demonstrates several ways to check a capacitor using a digital and analog multimeters and an lcr meter. Some multimeters offer a relative rel mode.

To carry out this test you should also follow the normal process of removing the capacitor from the circuit or board and ensuring it is discharged. Some multimeters measure capacitance directly by supplying a voltage across a capacitor and measuring the discharge current. To test a capacitor with a multimeter discharge the capacitor set the multimeter to test for resistance then interpret the reading. When measuring low capacitance values the relative mode can be used to remove the capacitance of the test leads.

Most multimeters don t have this function though but you can still test a capacitor using the voltmeter or ohm meter setting. A diode is forward biased when the positive red test lead is on the anode and the negative black test lead is on the cathode. If you suspect the capacitor is dead conducting an ohm meter test is the easiest way to find. 6 ways to check a capacitor by using dmm amm avo.

A multimeter set to the resistance mode ω can be used as an additional diode test or as mentioned previously if a multimeter does not include the diode test mode. Since capacitors store voltage the multimeter is also capable of reading volts so if the multimeter being used has a capacitance meter. Multimeters can function as a voltmeter and capacitors are rated with a maximum voltage that can be applied to them so this test would be centered on measuring the voltage rating of the capacitor. To place a multimeter in relative mode for capacitance leave the test leads open and press the rel button.