Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!
Since87 said:I think someone sells a 4 Ohm 10 Watt Rheostat. That would be much better for two of these fans.
Lithan said:Uber... With two fans MORE voltage must get to the fans or else they will dip below startup voltage and NOT spin. This is bad. So you get a weaker Rheo which at its highest resistance still does not resist current enough to stall the fans.
Remember more fans need more power.
Resisters do not supply power, they Remove it.
Therefore, two fans needs more power
Weaker resistor amounts to more power.
You want a weaker resistor.
Lithan said:WOOOT Read since87's post REAL REAL slow this time, and I can understand the HOW. But I still want to know the WHY. Can you maybe drop me some hints as to what books/chapters in books I'd find this stuff in? I've got a high school physics and I can probably get a college physics year one book. Or anything I could grab at the library.
Lithan said:With two fans MORE voltage must get to the fans or else they will dip below startup voltage and NOT spin. This is bad. So you get a weaker Rheo which at its highest resistance still does not resist current enough to stall the fans.
Intrepid6546 said:people here is something very basic i dont see...
voltage is how much is given to the device and any device on an X voltage wire gets X voltage. if what he is saying about voltage getting split in half by 2 devices on one line. what about having 2 molexes on oe line pluged into 2 devices and both get 12 volts!!!???
Intrepid6546 said:if you really want to know what ohm resistor is needed, just buy a bunch of 10 ohm resistors, like 15 of em, and than put em in series first onle one, than 2 than 3 in a chain adding more and more untill you his a resistance that causes the fan to coem close to a hault but not actauly stop. there is your max resistance!
Intrepid6546 said:Therei s much more in this but I don't have time to call up my physics prof on a sunday and get killed the next day i have his class.