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cold cathode |
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cold cathodeA cathode in a gas-filled electron tube that is not heated by a filament in order to excite the electrons and cause current flow. The voltage potential within the tube is sufficient to ionize the gas in the tube and cause current flow. For example, the backlights in many flat panel LCD screens are cold cathode fluorescent tubes (see CCFT). See cathode. cold cathode [′kōld ′kath‚ōd] (electronics) A cathode whose operation does not depend on its temperature being above the ambient temperature. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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It is designed to operate various lighting loads -- such as low voltage transformer, neon, cold cathode and fluorescent -- without the need for interfaces, ensuring simplicity for specifier, installer and user. The XRF systems that Oxford manufactures, which employ a cold cathode digital X-ray tube, enable analysis in less than 10 seconds. Cold cathode ray technology illuminates the instrument faces, while the indicators are backlit. |
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