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Cold Cathode vs. Neon


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bmw5002 
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Posted: September 30, 2005 at 12:29 PM / IP Logged  
Hey guys, I was wondering if there is a difference between the neon tubes you can get for your car from Best Buy say, and the cold cathode tubes that scanners and such use. I see the cold cathode tubes for sale on computer sites for installing into computer cases with windows. They run off 12v, so I figured it would be easy as cake to wire them into a car. Supposedly they are alot brighter than regular neon tubes. But are certain car neon manufacturers actually using cold cathode or is it only the computer part manufacturers? Thanks.
sneakycyber 
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Posted: September 30, 2005 at 4:19 PM / IP Logged  
Cold cathode - 1.) Electric discharge lighting, which uses an electrode with a large metal mass to emit electrons. Neon tubing is a cold cathode type. Versus Neon = Wich is a tube filled with Nobel Gases (The noble gases are the chemical elements in group 18 (old-style Group 0) of the periodic table. This chemical series contains helium, neon, argon, krypton, xenon and radon. Through wich either AC or DC current is passed to excite the gasses giving off light. (Defintions verified with Google search). The pro's of cold cathode is it generates little or no heat at all, thus making it perfect for use in confined areas where temperature is a problem. Like computer cases for example.
sneakycyber 
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Posted: September 30, 2005 at 4:49 PM / IP Logged  
I just thought of another way to explain it.. Think of an empty tube. Place at one end a spray nozel set for fine mist. The fine mist of vapor being the excited electrons. This is cold cathode or HID. Take this same tube and fill it with neon Gas. the neon's electrons are not excited. Applying current excites the electrons and gives off light. And you get Neon lights
TCalYen 
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Posted: October 01, 2005 at 1:34 AM / IP Logged  

bmw5002 wrote:
Hey guys, I was wondering if there is a difference between the neon tubes you can get for your car from Best Buy say, and the cold cathode tubes that scanners and such use. I see the cold cathode tubes for sale on computer sites for installing into computer cases with windows. They run off 12v, so I figured it would be easy as cake to wire them into a car. Supposedly they are alot brighter than regular neon tubes. But are certain car neon manufacturers actually using cold cathode or is it only the computer part manufacturers? Thanks.

Engine compartment has both neons and cathodes.  www.oznium.com sells 12v cathodes for automotive apps.

Cold Cathode vs. Neon -- posted image.

TCalYen
sneakycyber 
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Posted: October 01, 2005 at 2:51 PM / IP Logged  
NICE!! install
bmw5002 
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Posted: October 01, 2005 at 5:38 PM / IP Logged  

That site quotes about cathodes: "Cold cathodes are similar to regular neon accent tubes but they provide a much better glow." So how would I be able to tell if something was a regular neon or a cold cathode if I was buying it in the store?

Oznium 
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Posted: October 04, 2005 at 9:34 PM / IP Logged  
If you're buying it in the store, the cold cathodes will say "cold cathodes" on the package.
And the neons will say something like "neons" on the package.
Why don't you just buy it online?
http://www.oznium.com/cathode-kit
TCalYen 
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Posted: October 04, 2005 at 9:58 PM / IP Logged  

philbish wrote:
If you're buying it in the store, the cold cathodes will say "cold cathodes" on the package.
And the neons will say something like "neons" on the package.
Why don't you just buy it online?
]

STFU NooBLit!Cold Cathode vs. Neon -- posted image.

www.oznium.com

TCalYen
TCalYen 
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Posted: October 04, 2005 at 10:01 PM / IP Logged  

sneakycyber wrote:
NICE!! install

Thanks!

TCalYen
ff-mike 
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Posted: October 05, 2005 at 12:29 PM / IP Logged  
Yep, them cold cathodes from the computer can be used on your car
Adapted wrote:
Cold cathode-Electric discharge lighting, which uses an electrode with a large metal mass to emit electrons. Neon tubing is a cold cathode type.
Neon- Which is a tube filled with Nobel Gases (helium, neon, argon, krypton, xenon and radon)through which either AC or DC current is passed to excite the gasses giving off light.
The pro's of cold cathode is it generates little or no heat at all
Pretty close. Cold cathode only means that the cathode is not heated by the current. In AC applications, they can get quite warm, even hot due to impinging electrons.
Neon is a type of cold cathode
Nixie is another type- these looked like vacuum tubes and were used to display numbers, typically in early calculators and 'digital' gas pumps. They date back 80 some years
Computer case 'cold cathodes' are usually fluorescent based (flourescent lamps can be either cold or hot cathodes) CCFLs are often used for backlighting camcorders and laptop displays

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