Views: 2 Author: Site Editor Publish Time: 2018-01-20 Origin: Site
Alternating current can "pass through" capacitors.
If the capacitor is connected to the AC circuit, the capacitor will charge alternately and discharge repeatedly because of the constant change of the AC voltage. At this time, there will still be no charge between the two poles of the capacitor. But in the AC circuit there is a constant change in the direction and size of the AC current, just as capacitors can pass through AC, this is the reason that AC can "pass through" capacitors.