Science Fair Project Encyclopedia
Continuity test
In electronics, a continuity test refers to checking an electric circuit to see if current flows (i.e. that it is in fact a complete circuit). A continuity test is preformed by placing a small voltage (wired in series with an LED or noise producing component such as a piezoelectric speaker) across the chosen path. If electron flow is inhibited by broken conductors, damaged components, or excessive resistance, the circuit is "open".
Devices that can be used to perform continuity tests include multimeters which measure current flow and specialized continuity testers which are cheaper, more basic devices, generally with a simple light bulb that lights up when current flows.
References
Last updated: 08-22-2005 20:31:19
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details