resistors

SupermotoMX · 3 Mar 2010 at 15:15

okay so i have on my routor (which i added

)

a 5v 60mm fan that pulls about 0.18amps according to the sticker.

well its currently run off usb. so when my pc/laptop is switched on... i plug it in so it stops the routor from locking up due to heat.

ANYWAY long story short. and kinda resistor i could add to bring the voltage down to about 4volts? from a standard 2.0 usb port, as atm the fan is loud.. and pushes WAY more air than is needed.

its a cheap led fan.. which constantly flickers... kinda cool

SupermotoMX · 3 Mar 2010 at 15:29

hmm that means totally nothing to me, would u be able to link something suitable on ebay, im 99% sure your allowed because its not a computer component, and ocuk dont stock resistors.

if this is false and Shroomz or anyone else does link, i accept full responsibility

SupermotoMX · 3 Mar 2010 at 15:52

sorry i wasnt sure where to post this

figures general hardware would know, if a mod could move would be awesome.

basicaly its a standard usb lead, with the positive and negative leads stripped and connected to the fan, thats the only thing it will need to power will not be adding more things onto it

guessing a resistor on the positive to restrict something to make the fan turn more slowly so making less noise

SupermotoMX · 3 Mar 2010 at 16:20

hmm i found these 2

http://cgi.ebay.co.uk/10-x-4-7-Ohm-...al_Components_Supplies_ET?hash=item1c0fe93326

http://cgi.ebay.co.uk/2-x-4-7-Ohm-3...al_Components_Supplies_ET?hash=item1c0fd26e61

one is 3watts and one is 1.4watts which would be better and why? :X

SupermotoMX · 3 Mar 2010 at 16:30

bremen1874 said:
E24 range resistors should be easy enough to get hold of.

If not, as you say, 4.7 or 5.6 Ohm would be okay.

for example both of them on ebay are 4.7 OHM. but one is 3 watts and one is 1.4watts which one would i be looking at? or dosnt it matter?