How do I Test a 23.5Uf Capacitor With a Digital Meter?

Written by william hirsch
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How do I Test a 23.5Uf Capacitor With a Digital Meter?
Many multimeters contain a setting to measure capacitance. (multimeter image by dinostock from

Capacitors frequently have values in the microfarad range, which is easily verified with a digital multimeter. The microfarad, abbreviated by the Greek letter "mu," which looks like a "u" followed by an "f," stands for a capacitance of one millionth of a single farad. Capacitance is a measure of a capacitor's ability to store electrical energy with a higher value corresponding to more energy. Capacitance should be within the tolerance written on the capacitor. For example, a 23.5 microfarad capacitor with a tolerance of 1.0 microfarad should register between 22.5 and 24.5 microfarads on a multimeter.

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Things you need

  • Digital multimeter

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  1. 1

    Turn on the digital multimeter by pressing the "On" button.

  2. 2

    Turn the dial on the multimeter to the microfarad setting.

  3. 3

    Place the positive lead of the multimeter on the left contact of the capacitor.

  4. 4

    Connect the negative lead to the right contact of the capacitor. The multimeter now sends electricity through the capacitor and displays its capacitance value on the screen.

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