I'm really sorry about all the spam I just have a ton of questions I'm trying to learn more about things = ) I need a Rheostat for a delta fan. Specifications: 80x80x38mm, -->80.16<-- CFM @ 5700 RPM, 52.5 dBA, 10.80w .90 Amp, 12v DC, 3+4 pin Molex connectors. link below http://www.sidewindercomputers.com/del80ffb08123.html can anyone point me in the right direction ? again sorry about the spam I just need lots of help building my new comp I want to get it right the first time Thanks again and for putting up with my S***
That fan has a resistance of 13.33R (V/I) so you need a rheostat about the same to turn the fan volts down to about 6v. A 10R will give you 6.85V minimum, a 15R 5.6V minimum. Taking the 10R, power needed is Rheo Resistance * Max Fan Current^2, ie 10*0.9*0.9=8.1W, coming down to 5.2W going to the limit of the allowance Vishay quote for their rheostats. God knows where you'll get one from, an electronic solution is best for powerful fans.
u might be able to get 1 but i dont know where also it would probably be big and expensive a better solution is to use one of the solutions on cpemmas site here sorry to guys at bit-tech for plugging cpemmas site so much i just like his solutions thats all
I think I found something OK will any of these Rheostats work with the delta fan? Sorry guys I'm so new to this = ( http://www.vishay.com/document/66101/66101.pdf http://www.vishay.com/document/66103/66103.pdf http://www.vishay.com/document/66102/66102.pdf
Well, Vishay say the 15R 12.5W one (66101.pdf) will carry 0.91 amps, your fan's 0.90 amps top speed, so that's very safe, the 10R even safer. The 25W and 50W are overkill. I think RS (Spares not Shack) do the Vishays if you're in the UK. Cost you though.
good good that will pay for the silver spray paint (for fans) and leave a little bit left over to go towards a dremmel
more newb questions OK great so http://www.vishay.com/document/66101/66101.pdf will work with my fan but umm how do I buy one ?
