Aluminum electrolytic capacitor features
A thin oxide film is used as a dielectric capacitor by sandwiching an absorbent paper impregnated with a paste electrolyte in the middle of two aluminum foils. Since the oxide film has a unidirectional conductive property, the electrolytic capacitor has a polarity. Its characteristics are as follows:
1. Large capacity and can withstand large pulsating currents.
2. Large capacity error and large leakage current; ordinary is not suitable for high frequency and low temperature applications, and should not be used at frequencies above 25 kHz.
3. Low frequency bypass, signal coupling, power supply filtering.