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
Turn on the digital multimeter by pressing the "On" button.
Turn the dial on the multimeter to the microfarad setting.
Place the positive lead of the multimeter on the left contact of the capacitor.
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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