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Who knows LEDs?

post #1 of 20
Thread Starter 
I want to put 2 LED's in my Danger Den Bay Res as it's built to house two small ones. I know nothing about working with LEDs. Can someone help me out? What do I need? I'd like UV ones if at all possible since my coolant is UV reactive.
post #2 of 20
Well LED's are light emitting diodes. It's just a small square in a plastic shell of a bulb. They are very easy to wire anywhere and require very little power. The bulbs are sealed of course and they put out very little if any heat. You would be cool to put some in there. I will look for a link for you

:EDIT: Here is the link I promised you
http://www.instructables.com/id/LEDs-for-Beginners/

:EDIT: They do sell UV LED's
http://www.nichia.com/product/led-lamp-uv.html
Edited by se7en56 - 5/22/08 at 10:30am
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post #3 of 20
2 UV 5mm LED.
If in parallel, a 270Ohm resistor.
If in series, two 220Ohm resistors.
Wire.
Molex plug.
2 Molex pins.


http://www.quickar.com/noqbestledcalc.htm
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post #4 of 20
Nice find DuckieHo!
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post #5 of 20
Thread Starter 
So I have to wire them myself? You can't buy them just ready to be powered?
post #6 of 20
So what exactly do you need to know about them? The "small" ones are probably 3mm ones. There's also a little larger ones that are 5mm and then 8mm and 10mm but those are big ones.

Basically the longest of the 2 legs is the positive(+) and the shorter one is the negative(-).

You can hook them up to any 5V or 12V source, but 5V would be the easiest because it's closer to the actual voltage of the LED so you can use a smaller resistor. YOU MUST USE A RESISTOR.

So if you're using 2 UV LED's, wire them in parallel and hook them to a 5V source. Parallel wiring is when you connect all the possitive legs together and connect it to the power source and then connect all the negative legs together and connect it to the grounding source. A series wiring is like what most people think of when you just connect all the LED's in a row end to end.

Examples :

Parallel -



Series -



So for 2 UV LED's, you're gonna wanna get a 47 ohm 1/4 watt resistor as well if you do parallel wiring and you can put the resistor anywhere between the power source and the first positive leg of the LED.

Hope this helps and let me know if you need anything else!
    
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post #7 of 20
Well I guess you can, but it would sort of limit exactly what you want to do with them.

This might be a good start:
http://www.oemled.com/power_LED_pre-assembled_kits.html

It would be easier with a bunch of LED's, a resistor, wires, and a battery. You can get all this is a radio shack I am pretty sure.
Edited by se7en56 - 5/22/08 at 10:51am
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post #8 of 20
Quote:
Originally Posted by se7en56 View Post
Well I guess you can, but it would sort of limit exactly what you want to do with them.

This might be a good start:
http://www.oemled.com/power_LED_pre-assembled_kits.html

It would be easier with a bunch of LED's, a resistor, wires, and a battery. You can get all this is a radio shack I am pretty sure.
NEVER buy LED's from Radioshack!....unless you want to get really dull LED's that cost 10x more than on the internet.

Go to www.ledshoppe.com to get the BEST price for LED's and they are also very bright.
    
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post #9 of 20
Quote:
Originally Posted by N0 F34R 1488 View Post
Go to www.ledshoppe.com to get the BEST price for LED's and they are also very bright.
I was just trying to be convenient if he lived near one
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post #10 of 20
Quote:
Originally Posted by se7en56 View Post
I was just trying to be convenient if he lived near one
And that's fine and some people prefer to have them instantly instead of waiting, but I was just saying that Radioshack's LED's are really dull and much more expensive. I personally will wait a few days to get MUUUUUUCH brighter LED's and get a large amount of them for much cheaper.
    
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