How many volts is a LED? - Techist - Tech Forum

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Old 12-20-2004, 11:34 AM   #1 (permalink)
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Default How many volts is a LED?

Hi,
I wanted to know how many volts LED have? And, how many volts that the motherboard give to the power LED and how many volts the powersupply give to a hard drive

Thanks
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Old 12-20-2004, 12:38 PM   #2 (permalink)
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I think you mean watts. There is only a 3.3, 5, and 12 volt rails on any and all powersupplies. I belive LED's run on the 3.3 or 5 volt rails, and the hard drive uses the 5 and 12. As for watts, LED's use almost none. Between 10 and 50 milliwatts.
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Old 12-20-2004, 12:52 PM   #3 (permalink)
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So... if I want to plug LEDs directly on my power supply I will use the floppy connector?
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Old 12-20-2004, 01:40 PM   #4 (permalink)
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LED's come in varying degrees of what they can handle in voltages and wattages.
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