Capacitor Types: Symbols, Functions, Applications, and FAQs


What is capacitor

Capacitor is an electronic component that stores electric charge. The capacitor is made of 2 close conductors (usually plates) that are separated by a dielectric material. The plates accumulate electric charge when connected to power source. One plate accumulates positive charge and the other plate accumulates negative charge.

The capacitance is the amount of electric charge that is stored in the capacitor at voltage of 1 Volt.

The capacitance is measured in units of Farad (F).

The capacitor disconnects current in direct current (DC) circuits and short circuit in alternating current (AC) circuit

Capacitor symbols

Polarized capacitor
Variable capacitor

Capacitor types

Variable capacitor Variable capacitor has changeable capacitance
Electrolytic capacitor Electrolytic capacitors are used when high capacitance is needed. Most of the electrolytic capacitors are polarized
Spherical capacitor Spherical capacitor has a sphere shape
Power capacitor Power capacitors are used in high voltage power systems.
Ceramic capacitor Ceramic capacitor has ceramic dielectric material. Has high voltage functionality.
Tantalum capacitor Tantalum oxide dielectric material. Has high capacitance
Mica capacitor High accuracy capacitors
Paper capacitor Paper dielectric material


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