Hi all
I think this should be an easy question for some
Im going to be using a 450w psu to power 2x12v .3a pc fans and another 2x5v smaller fans.
I have experience with electrical theory but still seem to get confused, especially with dc cause most of my work relates to ac currrents, and my training was years ago lol.
The pc psu supplies 3v, 5v, 12v, in both negative and positive. the positive supplies have more amperage, the negative supplies have less amperage.
Can i run my 12v and 5v fans off the negative 12v supply? im thinking of doing this if possible because the neg 12v only gives .8 amps, which is much closer to the combined fan draw of .6 amps. (the pos 12v gives like 30amps).
would there be a problem running the 12v fans (.6 amp) off the pos 12v supply with a 30amp rating? (from my knowledge i think that will be ok cause the fans will only draw amperage up to their specified ratings, up to the point they are doing their maximum work).
also, i want to save as much power as possible. would running the psu rated at 450w waste alot of power considering i only need around 20w with the four fans?
Would it be a better option (in relation to power use) to simply find old 12v and 5v transformers from phone and laptop chargers?
thanks guys!@!! i dont wanna burn my house down unless its on purpose, using fuel and a lighter lol
peeeaace
I think this should be an easy question for some
Im going to be using a 450w psu to power 2x12v .3a pc fans and another 2x5v smaller fans.
I have experience with electrical theory but still seem to get confused, especially with dc cause most of my work relates to ac currrents, and my training was years ago lol.
The pc psu supplies 3v, 5v, 12v, in both negative and positive. the positive supplies have more amperage, the negative supplies have less amperage.
Can i run my 12v and 5v fans off the negative 12v supply? im thinking of doing this if possible because the neg 12v only gives .8 amps, which is much closer to the combined fan draw of .6 amps. (the pos 12v gives like 30amps).
would there be a problem running the 12v fans (.6 amp) off the pos 12v supply with a 30amp rating? (from my knowledge i think that will be ok cause the fans will only draw amperage up to their specified ratings, up to the point they are doing their maximum work).
also, i want to save as much power as possible. would running the psu rated at 450w waste alot of power considering i only need around 20w with the four fans?
Would it be a better option (in relation to power use) to simply find old 12v and 5v transformers from phone and laptop chargers?
thanks guys!@!! i dont wanna burn my house down unless its on purpose, using fuel and a lighter lol
peeeaace