How to Find the Voltage of Ceramic Capacitors

Written by william hirsch
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How to Find the Voltage of Ceramic Capacitors
Use a digital multimeter to test ceramic capacitors. (Polka Dot Images/Polka Dot/Getty Images)

You can learn to measure the voltage of a ceramic capacitor to know how much energy it stores and whether it is working properly. Capacitors store energy for later use by other electrical components such as motors. The higher the capacitance and voltage of the ceramic capacitor, the more energy it may store. Ceramic capacitors come in round disk and square varieties. Ceramic capacitors typically have a higher capacitance when compared to other types that are the same size and are non-polar, and either of their terminals on a ceramic capacitor may be considered positive or negative.

Skill level:
Moderately Easy

Things you need

  • Digital multimeter

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  1. 1

    Turn on the digital multimeter and rotate its measurement dial to measure direct current (DC) voltage. The DC voltage symbol on the multimeter is a letter "V" with straight lines above it. Choose the highest DC voltage setting that is above the manufactured voltage written on the capacitor. If the multimeter is an auto-ranging model, their is only one voltage setting.

  2. 2

    Plug the red and black probes of the multimeter into its positive and negative ports, respectively. On some multimeter models the positive port is labelled "V" for voltage and the negative port is denoted by "COM" for common ground.

  3. 3

    Touch the red and black probes of the multimeter to opposite terminals of the ceramic capacitor. The order does not matter since ceramic capacitors are non-polar. The voltage of the capacitor is displayed on the multimeter screen in volts. If this voltage is less than the manufactured operating voltage, the capacitor may be damaged.

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