minimum load?

[bogdanfirst]

i have an old computer power suply, wich i intend to use for my electronic circuits, and this is the problem: it says that i must have a minimum load for the 5V of 5A, but i dont need that much...isnt 1A anough?
and for 12V a min. load of 2A but i only need 1-1.5A...is it ok?
also what happents if i turn it on with no load?
thanks, and hope i get some answers soon!!

 

[Sebi]

Without any load maybe cannot started, sometimes (older types) damaged. Work fine with 1...2A load, but 5V load must be higher as 12V load.E.g. 5V 1A, 12V 0,5A. 5V 2A, 12V 1A. You can play with loads, what happen (the results depend from overvoltage shutdown circuit) when You pull out higher current from 12V. ( in this case the 5V go small higher, and the protection cct swithing off.

 

[bogdanfirst]

so if i want to use it to full power on 12V wich is 8A then i must have more than 8A on 5V?
because i dont want to use the 5V for anything, i only need the 12V
and the suply is quite old....1994

 

[Sebi]

Open it, and put the voltage feedback with increased resistor to 12V output. If You can send me via e-mail a good quality picture with top and bottom wiew, i can draw the modifications. The result is 12V 15A.

 

[bogdanfirst]

ok, i emailed you the pics.
thanks for the support.

 

[bogdanfirst]

the suply is the same type like this
https://www.electro-tech-online.com...closure-ran-off-of-ni-cd-rechargable-bat.730/
but a different one.....the one in the forum above is hundreds of pieces...