cold cathode

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cold cathode

n
(Electronics) electronics a cathode from which electrons are emitted at ambient temperature, due to a high potential gradient at the surface
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cold cathode - a cathode that is a source of electrons without being heated
cathode - a negatively charged electrode that is the source of electrons entering an electrical device
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References in periodicals archive ?
introduces a dual output 12 V DC input inverter designed to power miniature cold cathodes fluorescent lamps used for LCD backlighting.
Whereas a CRT uses a single-point hot electron source that is scanned across the screen to produce an image, FEDs use an array of fine cold cathodes. No scanning is usually involved.
Further, while the CRT is a hot-cathode device, FEDs use cold cathodes that produce electrons through field emission.