OLD AT power suply

[Knight Rider]

Hi,

I only need the +12V line, but its only works fine when there is a load at the +5V line. The 12V isn't 12V but somthing like 9-10V.
How can i fix it?? I have nothing for the 5V line.
I want to use it for a 156W peltier.

Please help me,
Thx

 

[mattg2k4]

Go to radioshack and buy a 10 ohm 10 watt resistor for the 5v line. That is almost always a sufficient load for a powersupply. Hook the resistor from any red 5v wire to any black ground wire.

 

[bogdanfirst]

well, it is true that you need load on the 5V.
but the current drawn from 5V must be greater than the current drawn from 12V.
i face the same problem. my suply can handle 12V/8A and 5V/20A. the problem is that i need to get 5A at 12V and i don't want to get anything from the 5V, yet, i need to draw more than 10A from the 5V.
maybe someone figured out a solution for this?
thanks.

 

[bogdanfirst]

ok, by the way, why is it needed for a 10R 10W? for 10R powered by 5V you only have a 2.5W dissipation. so a 3W resistor is enough.
i recommend using 2 resistors of 5 ohm, 5W. or if you can find a 10W, 2.5 ohm then it is better.