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08-25-2004, 05:48 PM
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Member (10 bit)
Join Date: Aug 2003
Location: Seattle, WA
Posts: 517
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Fun with LED's!
I was thinking that I'd like to put some small, bright LED's around my case, but I don't want to spend a bunch of money on a fan or something like that. Since you can order standard LED's from a big company like Digi-Key for about 20 cents or less each (in bulk), I was wondering what sort of PSU requirements there would be. I know LED's require next to no current and very little voltage, but would the voltage from a standard 4 pin motherboard connector be too much for them? It's around 15V, right?
Has anyone tried this? I wouldn't want to hook them up and have them pull too much current from the PSU (simply because the PSU could provide it) and start a fire or something.
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08-25-2004, 11:12 PM
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#2 |
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Barefoot on the Moon!
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Premium Member
Join Date: Aug 2002
Location: Northeastern USA
Posts: 13,285
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The PSU's molex connectors provide 5V (red wire), 12V (yellow wire), or can be used in combination to get 7V.
LEDs don't use much power at all. What they pull is neglegable. You can either use 5V LEDs on the 5V line, or LEDs with a lower voltage rating plus a resistor.
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There are two secrets to staying young, being happy, and achieving success. You have to laugh and find humor every day, and you have to have a dream.
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08-26-2004, 10:08 AM
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#3 | |
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Resident Intel Fanboy
Join Date: Mar 2004
Location: Cincinnati
Posts: 1,669
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Wait and see if Designer stops by here, he'll know exactly which resistor to get if you give him some basic info on your LED's when you get them. I've done this before, with a CDROM drive, just don't remember what resistors I used, and, alas, they're at home and I am at work. I can check and let ya know if Designer doesn't get to pop in.
Quote:
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08-26-2004, 10:22 AM
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Shiro Usagi
Premium Member
Join Date: Sep 1999
Location: Kaneohe, Hawaii
Posts: 34,002
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08-26-2004, 01:34 PM
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Resident Intel Fanboy
Join Date: Mar 2004
Location: Cincinnati
Posts: 1,669
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Thanx Cricket!
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Cricket
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