A capacitor (originally known as condenser) is a passive two-terminal electrical component used to store energy in an electric field.
The forms of practical capacitors vary widely, but all contain at least two electrical conductors separated by a dielectric (insulator); for example, one common construction consists of metal foils separated by a thin layer of insulating film. Capacitors are widely used as parts of electrical circuits in many common electrical devices.
When there is a potential difference (voltage) across the conductors, a static electric field develops across the dielectric, causing positive charge to collect on one plate and negative charge on the other plate. Energy is stored in the electrostatic field. An ideal capacitor is characterized by a single constant value, capacitance, measured in farads. This is the ratio of the electric charge on each conductor to the potential difference between them.
- 1,074 Views
Category: Engineering Symbols.
More symbols in Electrical & Electronic Symbols:
An electronic symbol is a pictogram used to represent various electrical and electronic devices (such as wires, batteries, resistors, and transistors) in a schematic diagram of an electrical or elect… read more »
More symbols in Engineering Symbols:
Engineering is the discipline, art, and profession, that applies scientific theory to design, develop, and analyze technological solutions. In the contemporary era, is generally considered to consist… read more »