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Topic: Cold cathode


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In the News (Wed 9 Dec 09)

  
  New Cold Cathode Bulbs Can Be Dimmed, Switched : TreeHugger
In most fluorescent bulbs, a cathode is heated to produce light, but with cold cathodes the cathode operates at the ambient room temperature (see tech details here).
Cold cathodes are well known to those who mod their computers.
These cold cathode CFL lamps are a different technology than the CFLs that you get at Costco or Sam's, and as such they aren't available in 26 watts.
www.treehugger.com /files/2007/02/new_cold_cathod.php   (1001 words)

  
  Cold Cathode Fluorescent Lighting.
Cold cathode lamps are typically ten to 30 percent more efficient than a comparable hot cathode fluorescent lamp.
Cold cathode lights have a life expectancy more than twice that of typical compact fluorescent lamps and do not suffer accelerated degradation with variations in supply voltage.
Cold cathode lamps can be dimmed to any point without damage.
www.rpc.com.au /products/lights/coldcathode_faq.html   (623 words)

  
  Cold cathode - Wikipedia, the free encyclopedia
A cold cathode gas filled tube or vacuum tube is one in which there is no cathode heater.
A common cold cathode application is in neon signage.
The cathode may or may not take advantage of this heating to facilitate the thermionic emission of electrons when it is acting as a cathode.
en.wikipedia.org /wiki/Cold_cathode   (457 words)

  
 Cathode ray tube - Encyclopedia.WorldSearch   (Site not responding. Last check: )
The first version to use a hot cathode was developed by J. Johnson (who gave his name to the term Johnson noise) and H. Weinhart of Western Electric and became a commercial product in 1922.
Cathode rays are streams of high speed electrons emitted from the heated cathode of a vacuum tube.
In a cathode ray tube, the electrons are carefully directed into a beam, and this beam is deflected by a magnetic field to scan the surface at the viewing end (anode), which is lined with phosphorescent material (usually based on transition metals or rare earths).
encyclopedia.worldsearch.com /cathode_ray_tube.htm   (1705 words)

  
 High Pressure & Vacuum
Cold Cathode: The major difference between hot and cold cathode sensors is in their methods of electron production.
In a cold cathode device, electrons are drawn from the electrode surface by a high potential field.
The main advantages of cold cathode devices are that there are no filaments to burn out, they are unaffected by the inrush of air, and they are relatively insensitive to vibration.
www.tcomega.com /literature/transactions/volume3/high3.html   (1674 words)

  
 Cold-Cathode Tube & Dekatron
By varying the voltage on a grid which is between the anode and the cathode, and is in the path of the electrons, the flow of the electrons (ie.
With all the cathodes at the same voltage a glow discharge from one of them to the anode will be transferred clockwise to its neighbouring cathode when a pulse is applied to all ten associated guide (transfer) electrodes.
By applying phased pulses to the guide electrodes the discharge is forced to jump from one cathode to the next, and in the process voltage pulses are produced in sequence at the cathodes, which in the early Anita calculators is used for strobing the keys on the keyboard.
www.vintagecalculators.com /html/cold-cathode_tube___dekatron.html   (1376 words)

  
 What is a Cold Cathode Light?
A cold cathode light is a tubular light that works by passing an electrical current through a gas or vapor, much like neon lighting.
A cold cathode light is up to five times brighter than neon lighting, and it has one of the longest lives of any lighting fixture at about 50,000 hours.
Cold cathode lights are often installed in coves where they provide indirect lighting for artistic effect or for quiet areas like alcoves and waiting rooms.
www.wisegeek.com /what-is-a-cold-cathode-light.htm   (412 words)

  
 Cold Cathode
Cold Cathode lighting is one of the newest advances in thin design providing an immense amount of light from only a 4mm diameter lamp.
The Cold Cathode lamps are set within a sleek aluminum U-channel for a more directional light-output or also available in an encased 3/8" diameter polycarbonate tube for full 360 degree lighting and complete lamp protection.
Cold Cathode fixtures are great lighting solutions for illuminating multi bottle glorifiers, retail showcases, displays, back-lit signs and light boxes.
www.centsiblelighting.com /cold-cathode.htm   (136 words)

  
 Cold cathode   (Site not responding. Last check: )
A cold cathode vacuum tube is one in which there is no cathode heater.
Cold cathodes somethimes have rare earth coating on them for enhancing electron emission.
The most common cold cathode application is in neon signs.
www.theezine.net /c/cold-cathode.html   (94 words)

  
 Karate.com -- cold cathode   (Site not responding. Last check: )
We also carry miniature cold cathode fluorescent lamps, UV, germicidal lamps and accessories.
Cold cathode lighting kits (CCFL) for your computer from Sunbeam.
A wide selection of the high quality Bitspower cold cathode light kits are available for your PC - blue, purple, green, red, yellow and UV.
www.karate.com /cold-cathode-search.html   (278 words)

  
 Re: Cold Cathode   (Site not responding. Last check: )
Cold Cathode -- CJ -- Wednesday, 9 March 2005, at 7:27 p.m.
Re: Cold Cathode -- fishin nut -- Thursday, 10 March 2005, at 6:57 a.m.
Re: Cold Cathode -- DIRK -- Friday, 11 March 2005, at 11:57 a.m.
www.neonshop.com /neontech/index.cgi?read=13036   (98 words)

  
 FlowLighting Cold Cathode Kits
Forget traditional neon — cold cathodes offer a stronger glow for your car lighting design, but at a fraction of the cost of the standard neon lighting kit.
A cold cathode is a lamp very similar to a neon lamp.
The transformer is designed to use 12 volts DC, and output approximately 650 volts AC that is needed to power the cold cathode.
www.oznium.com /cathode-kit   (1118 words)

  
 Techware Labs - Reviews - BGMicro Cold Cathode
Installation of the cold cathode was quite easy, as there's a slight shelf behind a support bar where you can easily wire tie the cold cathode securely into place.
I personally had problems figuring out how to mount the inverter for the cold cathode, and finally decided on putting it into the box that it came packaged in and then wire tying/taping it down to the support beam in my case.
I was really impressed by the affects of this cold cathode on the aesthetics of my case, as that eerie green glow illuminates the inside of my case very nicely, and creates a very cool looking effect on the back of my case.
techwarelabs.com /reviews/case_accessory/cold_cathode   (577 words)

  
 Sound Card Controlled Gold Cathode: Page 1
A backplane mountable sound pass-through, which controls the light; a cold cathode light with glass enclosure; 1/8" headphone style short-cord; Molex connector power cable with leads for the pass-through; and three double-sided sticky pads for mounting the light.
If you flip the "mode" switch to the little light bulb icon, the cold cathode stays on continuously.  The sensitivity knob allows you to change how strong the sound must be in order to fire the tube.
Although the connector size isn't standard, a second cold cathode can be connected.  It's not much trouble to modify cold cathodes so they are compatible.  I was able to hook up a couple tubes I got from electronics shops and it worked just fine.
arstechnica.com /reviews/hardware/soundcathode.ars   (381 words)

  
 Generating X-Rays with Receiving Tubes
Since the tube is operated in a cold cathode mode, the tube's degree of vacuum is quite important.
Even operating in a cold cathode mode, the current through these tubes at 40 to 60 kV is enough to cause heating.
The latter was deposited on the inside of the bulb, opposite the cathode, and was capacitively coupled to the Oudin coil by means of a layer of aluminum foil which was wrapped on the outside of the bulb.
xray.uu.se /hypertext/VacNews2.html   (1899 words)

  
 Cold cathode - AngelMod Cold Cathode 80x25mm Fan Light Kit review by Michael
A cold cathode is distinguished from a cathode that is heated to induce Nixie tubes too are cold cathode, neon displays that also happen to be in-line,
Cold Cathodes were the most sort after before they came into being.
I have the regular bright cold cathodes and one of these puts out more light Frankly, normal cold cathodes are now dead.
infoseeknow.com /ifsn/cold-cathode.htm   (424 words)

  
 Cold Cathodes / Computer Case Lights at $3.99!
Our huge selection of cold cathode lamps and computer case lights will fit every case modders' needs.
Whether you want a brighter light to compliment your LED fans or a UV light to light up your UV-reactive computer components, we have the cold cathode lighting solution for you.
Logisys 12in 2-in-1 Twin Cold Cathode - Blue/UV
www.xoxide.com /coldcathodes.html   (187 words)

  
 DIY - Cold Cathode Aquarium Moonlighting
I started to get the idea that some people were shying away from the mainstream methods of cold cathode or LED moonlights because they thought they might be too complicated to hook up.
This is important for two reasons-you want the cold cathode tubes to have a clean surface to adhere to and the reflector should be as shiny as possible to reflect the most amount of light back into the aquarium.
Because these cold cathode lights are designed for computers, they are set up to plug into a PC power supply.
www.cichlid-forum.com /articles/diy_moonlight.php   (1573 words)

  
 Cold Cathode & Neon Light Specialists Nationwide, Electro Signs
Electro signs have manufactured cold cathode for over 50 years and offer a full design, installation and maintenance service.
Cold cathode neon and seft lighting are very important themes of light for use in the urban context whether for interior use in shopping centres, offices, bars or restaurants and for exterior use in dynamic methods forming large visual splashes of light across buildings and architectural features.
These forms of light can be offered on either high or low voltage to suit your requirements.
www.coldcathodelight.com   (102 words)

  
 PCApex.com - Sunbeam Cold Cathode Fans
Once i got one hooked up though, I realized that the design and function of cold cathode fans would appeal to every modder who takes pride in their work and wants it to stand out, while at the same time adding great cooling benefits.
The fan itself is housed in nice clear plastic that is rounded on the cold cathode side and is square on the other.
The cold cathode tube is completely encased in a rounded plastic bezel that is affixed to the fan with two small screws.
reviews.pcapex.com /modding/sunbeam_cold_cathode_fans.php   (2276 words)

  
 Virtual-Hideout.Net | Articles | Ultimate Cold Cathode Kit Shoot-Out!
All the cold cathode "cores" appear to be the exact same thing and they're all just as bright as one another.
So bottom line, this cold cathode kit from frozencpu will "work", but I think you would be wiser to spend your $34 elsewhere on a more protected cathode kit.
I think with the intense competition in the cold cathode market right now, Frozencpu could certainly take the time to make a better kit, especially considering some of their other products are of such nice quality.
www.virtual-hideout.net /articles/cc_kits_shootout/index.shtml   (2799 words)

  
 === Flashlights cold cathode flashlight ===   (Site not responding. Last check: )
Locating the best cold cathode flashlight places is often difficult.
Deciding which are the best cold cathode flashlight sites is not always easy.
Being observant of the growth of online commerce cold cathode flashlight businesses expand with the increased business from Internet sales The most obvious advantage that online cold cathode flashlight retailers have over old fashioned cold cathode flashlight organizations is the capacity to transform in response to transformations in the marketplace.
www.a1-ezystore.com /flashlights/cold-cathode-flashlight.htm   (344 words)

  
 cold cathode lamp fixture design and other fixtures related information   (Site not responding. Last check: )
The Neotek cold cathode fixture has been fully tested, including the lamp, and approved by UL as a...
Cold Cathode Lamp Cold Cathode Transformer T COV E S E C T I O N...
cold cathode fluorescent lamp himalayan salt lamp lighting fixture manufacturer...
www.nethorde.com /fixtures/cold-cathode-lamp-fixture-design.html   (303 words)

  
 Cold Cathode Fluorescent Lamps - Lighting BR   (Site not responding. Last check: )
… NEC cold cathode fluorescent lamps are manufactured from hard glass that … these long life cold cathode fluorescent lamps for use as back lights …;
Cold Cathode Light Cold Cathode Lamp Cold Cathode Fluorescent Lamp …;...
Micro-Brite is a new energy-saving long-life cold cathode fluorescent lamp family.
lighting.br.com /cold-cathode-fluorescent-lamps.html   (517 words)

  
 Case Mods, Cold Cathodes, Lighting - CrazyPC
Comes with two cold cathode lights, power switch, 4pin pass through, and dual 12V DC Inverter.
Comes with cold cathode light, power switch, 4pin pass through, and dual 12V DC Inverter.
Cathode light can be removed and place on any 80mm fan.
www.crazypc.com /products/casemods/lighting.htm   (220 words)

  
 [OC]ModShop - Dual Colored Cold Cathode
The box of the cold cathode is just your plain box and on the outside you can see that it has a blue and red sticker on it meaning that it is a dual colored cold cathode.
The cathode is very professional looking; it has the cubes on each end to make mounting easier, not to mention that if you are going to be putting it on the bottom of your case you wouldn't have to use Velcro.
I ran the cold cathode for a few hours to make sure that everything worked how it was supposed to and to see what it looked like in my case.
www.ocmodshop.com /default.aspx?a=103   (1273 words)

  
 Bjorn3d.com -CrazyPC Green Cold Cathode Kit, Satisfying Your Daily Tech Cravings Since 1996
Even though they've been popular for awhile now, cold cathode lights are still one of the most popular ways to light up a case with windows.
By the way, I installed the cold cathode in my home theater PC, which was not going to let the tube lie down flat because of the way the case is designed (drive cage got in the way).
I haven't seen any cold cathode kit yet that doesn't expect you to do some case modding in order to locate the switch in a convenient place, and it's really too bad.
www.bjorn3d.com /_preview.php?articleID=271   (767 words)

  
 PCApex.com - PCMods UV Cold Cathode Kit
"Cold Cathode lighting is the next generation of case lighting for a variety of reasons.
Cold Cathode tubes are highly reliable, and can last up to 20 years.
Cold Cathodes can sometimes fit where regular neon’s couldn’t fit, and can help light those special areas that you want lit.
reviews.pcapex.com /modding/pcmods_uv_cold_cathode_kit.php   (1039 words)

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