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switched fan voltages ( high speed, Low speed modes)

post #1 of 4
Thread Starter 
I know that title might be confusing... but anyways I wan't to basically be able to switch all the fans in my case between say 7v and 12v with the flip of one switch. Anyone have any insight into this? I guess the basic idea is a single pull double throw that would go between the two but should i be worried about voltage spikes or anything?
post #2 of 4
Quote:
Originally Posted by Elyminator View Post

I know that title might be confusing... but anyways I wan't to basically be able to switch all the fans in my case between say 7v and 12v with the flip of one switch. Anyone have any insight into this? I guess the basic idea is a single pull double throw that would go between the two but should i be worried about voltage spikes or anything?

You shouldn't have to worry about voltage spiking if you are running of the PSU instead of the mobo. If you're running off your mobo why not use something like Speed fan to adjust the fans to your liking?
post #3 of 4
Thread Starter 
Thanks! I'm going to run it off the psu just didn't know of out had been done or something like that
post #4 of 4
I'd recommend a double pole, double throw switch. That way you can run 12v on one side and 7v on the other and the two won't ever get crossed up.
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