Electrolytic Capacitor Damage Characteristics

Electrolytic capacitors are used in large quantities in electrical equipment and have a high failure rate. Electrolytic capacitor damage has the following performances:

1. The loss of capacity or capacity becomes smaller;

2. Slight or severe leakage;

3. The loss of capacity or capacity and leakage.

The methods for finding damaged electrolytic capacitors are:

(1) Look: Some capacitors will leak when they are damaged. There will be a layer of oil on the surface of the circuit board under the capacitor or even the surface of the capacitor. This capacitor can never be used again. Some capacitors will bulge after being damaged. Continue to use; therefore, in the early selection of capacitors, it should be good quality, try to choose a well-known brand of capacitors, such as the capacitor giant - Guoju capacitor.

(2) Touch: Some electrolytic capacitors with serious leakage will heat up after starting up, and even hot when touched with fingers, this capacitor is replaced;

(3) There is electrolyte inside the electrolytic capacitor. If it is baked for a long time, the electrolyte will dry out, resulting in a decrease in capacitance. It is important to check the heat sink and the capacitance near the high-power components. The closer to it, the more damage.