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Old 09-18-2006, 11:12 PM   #1 (permalink)
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Default Where to find LED's, and a question

Ok, I'm looking for a bundle of maybe 50 - 100 Ultra Blue LED's. I don't really know LED specs, I just want really bright blue LED's.

I also need a correct resister for whatever LED somebody links me too, cause I don't know anything about LED's.

Lastly, if I wire like say 20 LED's in a group, do I need a resister for every LED or can I just use one resister on the 12+ line before it gets to the LED's?


Thanks.
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Old 09-18-2006, 11:43 PM   #2 (permalink)
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you'll need a resistor regardless if its above the LED's voltage rating and especially for a 12 volt line.

check here you might find something

http://www.allelectronics.com/cgi-bi.../340/LEDs.html
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Old 09-19-2006, 12:41 AM   #3 (permalink)
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u only need 1 resistor. also do ur circuit in parallel instead of series. and be sure to tape the prongs coming from the LEDs so they wont touch each other and short circuit.
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Old 09-19-2006, 01:09 AM   #4 (permalink)
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Quote:
Originally posted by krazieaznboi
u only need 1 resistor. also do ur circuit in parallel instead of series. and be sure to tape the prongs coming from the LEDs so they wont touch each other and short circuit.
Nah, tape is for cheap-o's.

I'm using heatshrink.

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Old 09-19-2006, 04:56 PM   #5 (permalink)
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Nah, 12v is a big no-no for lots of LEDs. Click image in sig for LEDs. As for the resistor's, if you go with one resistor per led, it would be 100 ohm 1/4 watt resistor, or 1 4.7ohm 2 watt resistor for 20 (hooked up to 5v of coarse). If you need anymore help on wiring them or what not, PM me or hit me up on aim cauz Im always glad to help.
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Old 09-19-2006, 08:52 PM   #6 (permalink)
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Quote:
Originally posted by xenium
Nah, 12v is a big no-no for lots of LEDs. Click image in sig for LEDs. As for the resistor's, if you go with one resistor per led, it would be 100 ohm 1/4 watt resistor, or 1 4.7ohm 2 watt resistor for 20 (hooked up to 5v of coarse). If you need anymore help on wiring them or what not, PM me or hit me up on aim cauz Im always glad to help.
Holy sh*t those are cheap! under 4$ for 20 LED's...yes!
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Old 09-19-2006, 09:45 PM   #7 (permalink)
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haha yea well my buddy orderes 10k+ in various colors for pretty cheap so yea lol. Oh and each LED comes with a free 100ohm resistor
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Old 09-19-2006, 09:54 PM   #8 (permalink)
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Sweet!

How much wire is on this?
http://xccreations.com/shop/product_...products_id=35
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Old 09-20-2006, 03:10 PM   #9 (permalink)
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1ft, its $.14 per foot.
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Old 09-20-2006, 11:56 PM   #10 (permalink)
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10K LEDS!??! where does he order them?
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