What is the close relationship between leakage current and voltage in electroly...
What is the close relationship between leakage current and voltage in electrolytic capacitors
? The withstand voltage of a capacitor means the voltage that the capacitor can withstand under certain conditions for continuous use. If the working voltage applied to the capacitor exceeds the rated voltage, the insulating medium inside the capacitor may be broken down, causing a short circuit between the pole pieces or serious leakage. Therefore, the operating voltage of the capacitor cannot be greater than its rated withstand voltage to ensure the reliable operation of the circuit.
For electrolytic capacitors, leakage current is an important item in performance indicators. The leakage current of the electrolytic capacitor is closely related to the voltage, and the leakage current increases with the increase of the working voltage. When the working voltage is close to the forming voltage of the anode, the leakage current will rise sharply. By testing the leakage current of the electrolytic capacitor, its ultimate withstand voltage and rated withstand voltage can be calculated, which has direct reference significance for the value of the capacitor withstand voltage in the circuit.