Ok, this is like childs play to you experts, but I am so wet behind the ears I might electrocute myself.
Here is the deal.
I have a small DC fan, the ones you would find inside a computer. It has three wires coming out of it, a RED a BLACK and a YELLOW. I want to hook this fan up to a small battery. Question is, which wire goes to the NEGATIVE and which to the POSITIVE? Any help would be appreciated, and again I am sorry for this totally easy lame question to all you experts.
Most computer fans work from 12V (but might work from lower).
Red = +ve = 12V Black = -ve = 0V
Ignore the yellow it's used to monitor the rpm in computer.
So what you are saying is that I can forget the YELLOW and hook the REd to the POSITIVE and the BLACK to the NEGATIVE and I should be set? Thanks so much for your speedy answer.
On most standard 3 wires PC fans, black is negative, red is positive (typically 12v), and yellow is SENSE for fan speed feedback. You can ignore the yellow.
REd
Yeah. Lamers have come up with this non-standard +ve and -ve abbreviation to confuse people; they can't just say + and -, as if _that_ was too simple. Duh.
Happy reading, all you H.P. fans!
"Great Cthulhu is Their cousin, yet can he spy Them only dimly. Iä! Shub-Niggurath! As a foulness shall ye know Them. Their hand is at your throats, yet ye see Them not; and Their habitation is even one with your guarded threshold. Yog-Sothoth is the key to the gate, whereby the spheres meet."
Oh ... wait ... you meant the *other* H.P.
:-)
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