Thread Starter thetank Joined Feb 13, 2007 14 Feb 14, 2007 #1 can some one tell me how you can get 7v from a computer power supply by connecting the 12v+ and 5v+ together and not hurt anything?
can some one tell me how you can get 7v from a computer power supply by connecting the 12v+ and 5v+ together and not hurt anything?
beenthere Joined Apr 20, 2004 15,819 Feb 14, 2007 #2 If they do, it won't be true. You might feed an LM317 with the =12 output and use it to supply the +7.
If they do, it won't be true. You might feed an LM317 with the =12 output and use it to supply the +7.
N n9352527 Joined Oct 14, 2005 1,198 Feb 14, 2007 #3 Some say that connecting the load between 12V and 5V terminals gives 7V supply (12-5=7). I wouldn't want to bet on how safe this is, probably will work with small load harmlessly as their grounds are shared. Large load would probably not be safe.
Some say that connecting the load between 12V and 5V terminals gives 7V supply (12-5=7). I wouldn't want to bet on how safe this is, probably will work with small load harmlessly as their grounds are shared. Large load would probably not be safe.
P Porkchop Joined Feb 5, 2007 17 Feb 14, 2007 #4 It does work the 7V measured it the potential difference. Regarding safety i'm not sure. People only use this for running there 12V fans at a lower rpm. Id say its bad practice and not a good permant solution but i have never heard and horror story's on the net because of this ?
It does work the 7V measured it the potential difference. Regarding safety i'm not sure. People only use this for running there 12V fans at a lower rpm. Id say its bad practice and not a good permant solution but i have never heard and horror story's on the net because of this ?