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DC 24v fan to 12v?

post #1 of 11
Thread Starter 
I was in need of a 40mm fan somehow looking in the garage I found an 40mm fan then I checked the back and it's DC = 24v, can I plug this into a normal 12v molex connection?
The fan it's an ADDA AD0424MS-G70 / 0.08A
    
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post #2 of 11
Yes, i will just spin slower.
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post #3 of 11
Thread Starter 
Cool thanks, no rep for you
But yes a
    
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post #4 of 11
Quote:
Originally Posted by DuckieHo View Post
Yes, i will just spin slower.
this
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post #5 of 11
Thread Starter 
Thanks so far, is there any way to run it at 24v using a PC psu? At 12v it barely moves any air, it spins but doesn't even move a tissue.
    
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post #6 of 11
Quote:
Originally Posted by jak3z View Post
Thanks so far, is there any way to run it at 24v using a PC psu? At 12v it barely moves any air, it spins but doesn't even move a tissue.
Thats about all you can do then.
    
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post #7 of 11
Thread Starter 
And if I use +12v and then -12v should that not give me 24v?
    
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post #8 of 11
Just buy a converter, PPC seems like took it off you can contact them see if they sell it separate from the pump combo, the adapter is to the right down the page.

Meanwell 24V psu will be another solution. Modifying your own psu is too risky, prefer you not going to do that and the amount of power you get out from the -12v and +12v going to be limited.
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post #9 of 11
Thread Starter 
I think it will be cheaper to buy a 4cm fan somewhere in a local store, being dc 12v ^_^'
    
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post #10 of 11
People occasionally short +12V and +5V to get +7V, and while I frown on this, it does work if used very sparingly.

On the other hand, combining +12V and -12V to get +24V is a bad, bad, BAD idea. Because the -12V is not generated in the same way as the other outputs on a power supply. Rather it's generated by an IC from the +12V rail. This IC generally cannot handle more than 0.5A of -12V current. A fan will very easily exceed this and blow the IC, which will in most PSUs cause the secondary control IC to call foul and not allow the PSU to operate (even if everything else still works). Thus the PSU will be effectively bricked.
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