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# Capacitor

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A capacitor is a device that stores elecrical charges. a capacitor consists of two conductive plates at different electrical potentials, and an insulating dielectric or insulator?. the size of the charge that a particular capacitor can hold is:

     C = Eo * K * L * W / D

where C is the capacitance in Farad?s, Eo is the electrostatic permittivity of vacuum or free space, K is the value of the dielectric or insulator used, and L, W, and D are the length and width of the common surface, and the distance between the plates.

For electronic devices such as radios, the frequency tuning is a combination of capacitance and inductance in the formula:

     1/ frequency = wavelength = C * I

In semiconductor [intergrated circuit]? devices these capacitors are made up of metal lines and insulators on a substrate. They will store charges such as a HIGH or a LOW.

see also electricity

A lot of [electronic products]? have capacitors.

An advance capacitor is digital logic gates. it is used for RAM/ROM and is found in your digital TV/Radio?, and PC.

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Last edited August 9, 2001 7:53 am (diff)
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