a device for accumulating and holding a charge of electricity, consisting of two equally charged conducting surfaces having opposite signs and separated by a dielectric.
flux capacitorRead more in this article about some frequently asked questions and fun facts related to our definitions.
- capacitive coupling,
- capacitive reactance,
Origin of capacitor
Also called condenser.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for capacitor
"Nice job these babies got," commented Gaines as he checked the capacitor circuits.The Small World of M-75|Ed M. Clinton, Jr.
a device for accumulating electric charge, usually consisting of two conducting surfaces separated by a dielectricFormer name: condenser
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
"device which stores electricity," 1926, from capacity with Latinate agent-noun ending.
Online Etymology Dictionary, © 2010 Douglas Harper
An electrical device consisting of two conducting plates separated by an electrical insulator (the dielectric), designed to hold an electric charge. Charge builds up when a voltage is applied across the plates, creating an electric field between them. Current can flow through a capacitor only as the voltage across it is changing, not when it is constant. Capacitors are used in power supplies, amplifiers, signal processors, oscillators, and logic gates. Compare induction coil resistor.
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