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 ?
Here, the panels behind the bottles are backlit by dimmable cold cathodes and are removable for easy access and maintenance.
The Litetronics Micro-Brite is the industry's first dimmable 15-watt cold cathode light bulb.
This consultation covers the acquisition, delivery, installation and commissioning of an optical device cathodoluminescence (CL) cold cathode.
It is my hope that the editorial staff will take another look at linear cold cathode lighting and not continue to follow the Pied Piper's call to jump over the cliff with LEDs.
In this case, iLight Technologies sued Fallon for infringing three iLight patents directed to certain ways of simulating cold cathode or neon lighting using, among other things, light emitting diodes (LEDs).
The company combines advanced process technology with its highly experienced analog designers to produce high-performance power management integrated circuits (ICs) for DC to DC converters, LED drivers, Cold Cathode Fluorescent Lamp (CCFL) backlight controllers, Class D audio amplifiers, and Linear ICs.
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.
Because budget restrictions prohibited the use of LEDs, Oldner specified cold cathode to achieve the look.
Contract notice: Acquisition of scanning electron microscope in transmission of 200 kv dedicated stem-d analytical, cannon electrons by field emission cold cathode with eds - energy dispersive spectroscopy of x-ray microscopy laboratory for electronics center research in ceramics and composite materials (ciceco) university of aveiro.
Currently, LED TVs are still more expensive than cold cathode fluorescent lamps (CCFL) counterparts, TRi said, but the prices of upstream driver ICs are expected to drop by 20% to 30% in 2011 to further stimulate demand for such products in China.