Capacitors
A capacitor stores electrical energy when charged by a DC source. It can pass alternating currents (AC), but blocks direct currents, called transient currents.
Capacitors, How are they made?
There are many different types of capacitors used in electronic. Each type is made from different materials and with different methods. Capacitors are also made to handle different amounts of electrical pressure or voltage. Each capacitor is marked to show the maximum voltage that it can withstand without breaking down.
The metal foil capacitor