In this Tips & Tricks ‘Project’ section, we will show you how you can check the working condition of an electrolytic capacitor using a multimeter. It is very easy and quite effective as well. 🙂
- Step 1: Insert the capacitor in the breadboard
An electrolytic capacitor has two legs, one is longer and the other is shorter. The longer one is the positive terminal and the shorter one is negative.
Insert the capacitor in the breadboard so that its longer leg comes in contact with the positive terminal and the shorter leg with the negative terminal of the battery.
Keep it connected for 10 seconds so that the capacitor will charge up.
- Step 2: Turn on the multimeter and set the range
Remove the battery terminals from the breadboard. Turn on the multimeter and set the range to 20V DC. Touch the probes to the capacitor legs. Positive probe with positive leg and negative probe with the negative leg.
- Step 3: Check the reading
Look at the measurement panel to take the voltage reading. The voltage should be decaying with time continuously.
If the voltage decreases with time then the capacitor is in good condition and if not then the capacitor may not work properly in a circuit. 😎