Warning: Use of undefined constant referer - assumed 'referer' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 102

Warning: Use of undefined constant host - assumed 'host' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 105

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 106

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 109
Capacitors - School Essays

Capacitors

A device for storing an electrical charge is called a capacitor or electrical condenser. in their simplest form consist of two metal plates, which are separated by a nonconducting layer called the dielectric. As one plate gets charged with a direct- current such as a positive charge, the other plate will be charged with the opposite sign such as a negative charge. The larger the capacitor, the more electrically charge it can absorb. are limited to the amount of electrical charge, but they function well as conductors in alternating- current circuits. One example of this is called the Leyden jar, which has the two plates that are coated with a metal- foil on both sides. The coated ...

Want to read the rest of this paper?
Join Essayworld today to view this entire essay
and over 50,000 other term papers

large, but the energy loss in the dielectric must be very small. Some applications for these are in radio- frequency circuits and low- frequency measuring circuits where great precision is required. Another type of capacitor uses castor or mineral oil for the dielectric. Oil insulated are used in applications where larger values of the capacitance are required. also use solid dielectrics such as films of synthetic materials, paper, glass, and mica. Mica has excellent properties as a dielectric. It is both high in its dielectric constant and insulation resistance. It is affected little by time and temperature. This time of capacitor is used in laboratories because of their stability and the relatively high values of capacitance for a given volume.
A type of capacitor that doesn't fall into one of those groups is an electrolytic capacitor, which has an oxide film formed on aluminum. This film is the dielectric and is very thin. This form of has a certain limitation. The ...

Get instant access to over 50,000 essays.
Write better papers. Get better grades.

Already a member? Login

CITE THIS PAGE:

APA
MLA
Chicago
Turabian

Capacitors. (2006, July 9). Retrieved November 14, 2024, from http://www.essayworld.com/essays/Capacitors/48879

"Capacitors." Essayworld.com. Essayworld.com, 9 Jul. 2006. Web. 14 Nov. 2024. <http://www.essayworld.com/essays/Capacitors/48879>

"Capacitors." Essayworld.com. July 9, 2006. Accessed November 14, 2024. http://www.essayworld.com/essays/Capacitors/48879.

JOIN NOW

Join today and get instant access to this and 50,000+ other essays

PAPER DETAILS

Added: 7/9/2006 05:48:01 PM
Category: Science & Nature
Type: Premium Paper
Words: 504
Pages: 2

Save |

Report

SHARE THIS PAPER

SAVED ESSAYS

Save and find your favorite essays easier