cold cathode


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cold cathode

[′kōld ′kath‚ōd]
(electronics)
A cathode whose operation does not depend on its temperature being above the ambient temperature.

cold cathode

A 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 CCFL). See cathode.
References in periodicals archive ?
Further, while the CRT is a hot-cathode device, FEDs use cold cathodes that produce electrons through field emission.
Here, the panels behind the bottles are backlit by dimmable cold cathodes and are removable for easy access and maintenance.
Compact Balzers gauges are available in piezo, capacitance, Pirani, and cold cathode configurations.
To solve this challenge, Litetronics created the 15-watt dimmable Micro-Brite cold cathode light bulb, which generates 750 lumens and saves up to 75% on energy costs, to replace the 60-watt A19 incandescent, one of the most prevalent bulbs found in restaurants.
Cold cathode gauges A better understanding of the physics of cold cathode gauges has resulted in a new design called the isolated collector inverted magnetron gauge.
4 Cost Analysis of Cold Cathode Fluorescent Lamps (CCFL) against Incandescent Bulbs 26
a cold cathode fluorescent lamp producer), have diversified into touch panels to cash in on huge business opportunities in the segment, in addition to Chunghwa Picture.
Having been involved in the neon and cold cathode industry for almost 35 years, I am appalled at the amount of misleading information that is being forced down the throats of lighting designers and architects in the form of advertising.
Designed for LCDs back-lit by two cold cathode fluorescent lamps, the DMW Series inverter, which costs $19.
Some cold cathode ionization BA gauges lose accuracy within 24 hours after they've been calibrated," says Paul Arnold, a senior scientist at Granville-Phillips Co.
Tenders are invited for Inverted Magnetron Cold Cathode Gauge With Its Controller And Connecting Cable
With the price gap between LED and cold cathode fluorescent lamps (CCFL)-backlit models narrowing rapidly, Cheng said, LED TV is the segment over which makers will pitch major battles in Taiwan.