View Full Version : you all got some splainin' to do
KeyboardCowboy
12-09-01, 09:05 PM
alright, i know this is in the wrong topic but i figured my question would get answered faster if i posted in here
alright, the "fanbus"
maybe i am missing something here but this is my understanding, a fan bus is a device that allows for more then 1 fan to be plugged into a single 12V and neg line, it is basically a splitter, correct?
but if you have say 3 fans, that each use 12V that is a total of a 36V draw, right?
so how is 1 12V line supposed to supply 36V of power to the 3 fans?
or would the 12 V fans only get 4V each?
or am i missing the point compleatly??
flounder43
12-09-01, 09:08 PM
they all are running at 12 volts, but share the current...
KeyboardCowboy
12-09-01, 09:10 PM
but if there are 3 12V fans, that is a total of 36V thoose 3 fans each need 12V to run and the line is only a 12V then how do the fans run at full power??
Originally posted by KeyboardCowboy
but if there are 3 12V fans, that is a total of 36V thoose 3 fans each need 12V to run and the line is only a 12V then how do the fans run at full power??
Nope a splitter causes the flow of current to go into a parrallel circuit. Normally if you had in in series (one by one in a line) it WOULD need 36.
In parallel the circuit can run without the added voltage but doesn't have the torque (ampere...torque is probably the best way of describing it). The fans require a minimum amount of amperes otherwise it won't have enough power (watts) to work. As long as you don't pass that limit you should be fine. Also, putting things in parrallel...a lot of things may draw more power than your power supply can handle...so be careful with that.
I hope that helps...
KeyboardCowboy
12-09-01, 09:19 PM
ok, i get it now, thanx for the info will, now anyone got specs on how to build one???
i was at a few websites but couldn't find the plans to do it
stompah
12-09-01, 09:20 PM
hmmmm... so your house is at maybe 10,000 volts?
Amps is what you are mistaking volts for cowboy. Volts is the level of electricity used where amps is the mount of usage.
So say your 3 fans draw 3 amps each that = 9 amps of power drawn.
The rules are the following:
Series: Volts add up. Amps stay the same.
Parallel: Volts stay the same. Amps add up.
Originally posted by KeyboardCowboy
ok, i get it now, thanx for the info will, now anyone got specs on how to build one???
i was at a few websites but couldn't find the plans to do it
specs on how to build a splitter? heh???
it can be as simple as twisting fan wires together with yellow and black wires from a power connector taping with electrical tape and plugging in to an open connector from your PSU
or else you can solder and heatshrink to be cleaner
Originally posted by KeyboardCowboy
alright, i know this is in the wrong topic but i figured my question would get answered faster if i posted in here
It goes in genral hardware and a lot of people hang out there who could answer the Q.
Originally posted by Ebola
It goes in genral hardware and a lot of people hang out there who could answer the Q.
Yeah, I agree. Its to your benefit (and ours, and the mods ;)) to put it in the section that pertains to your topic. You'll generally get a much more informed response by someone who is good in that field. It may take a bit longer, but wouldn't you rather get a little good advice than lots of bad?
For example. I probably wouldn't have responded if you had posted it in hardware. :D
But seriously, if you need any help on electronics stuff I'd be happy to look up some good sources. Even if you just learn it for this mod, its definately something that will help you get a better understanding of how a computer and electronics works overall.
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