How to Determine if an Aluminum Electrolytic Capacitor is Damaged? Aluminum electrolytic capacitors, categorized by their service life, can be divided into high-frequency electrolytic capacitors and general electrolytic capacitors. Common causes of damage to general aluminum electrolytic capacitors include the following several factors:

Voltage distribution is uneven; when one aluminum electrolytic capacitor voltage equalizer resistor is damaged, the voltage across the two串联 capacitors becomes unbalanced, with the capacitor having higher voltage at risk of failure.

2. Excessive leakage current in capacitors can occur when plug-in electrolytic capacitors connected to the power circuit leak current. Generally, leakage current is not significant, but due to poor capacitor quality or aging, it can become more severe, leading to overheating as the leakage current expands, ultimately damaging the aluminum electrolytic capacitors.

3. Damage to the voltage stabilizing tube can lead to the entire voltage being distributed during communication, which may generate directional voltage on the coupling capacitor, ultimately causing damage to the capacitor.