how to change from 12v to 7v

[snarloas1982]

how do i change my thunderblade fan from 12v to 7v?

 

[fornowagain]

yellow is 12v

red is 5v

black is 0v

following?

12v fan connects to yellow and black.

now where is 7v?

between the 12v and 5v

take the fan red wire to the yellow and take the fan black to the red

oh, and don't get it backwards or use anything more than a fan and use a feed with another device connected, should help with any current feeding back into the psu.

 

[smids]

A reason I just bought a fan controller...

 

[Cyber-Mav]

7v mod is not very safe to run for the psu. you will learn in time when the psu rails decide to blow up. best way is to use a resistor.

 

[stigggeh]

my old skool antec psu has fan only molex's they are best thing ever invented imo..

 

[DaZzZa]

12volt + 5 volt = 7 volt just plug them into the 12v and 5v and you get 7v sounds dumb i know but thats how it works

if its a molex fan its easy and safe, take the mins out of the molex on the psu side and swop them round so that they are aligned with the two pins on the fan molex but make sure you dont pulg anything else onto that molex thats had its pins swopped around unless its more fans you want at 7v but using molex's that come before the modded one are fine to use

 

[snarloas1982]

i have a aerogate 2 fan controller but it doesnt seem to control the fans anymore, i but the amber series 120mm fans but they dont shift much air

 

[Squidge]

12volt + 5 volt = 7 volt just plug them into the 12v and 5v and you get 7v sounds dumb i know but thats how it works

How is it dumb? Overall voltage will always be the difference between the positive and negative supply rails, so 12v - 0v = 12v, 12v - 5v = 7v, 12v - 3.3v = 8.7v, etc. Just make sure that the rails you are using have enough current carrying ability. 5V and 3.3V rails are normally weak compared to the 12V rails.