Removing PC power supply fan (for lab use)

[Pancra85]

I use the 12 volts from an old PC power supply, it has 8A.
What I connect to it has a consumption of around 4,5A
Would it be cool if I remove the fan from it? It's very noisy... or will it get too hot???
Thanks!

 

[FoxyRick]

It will almost certainly get too hot (eventually) if you remove the fan.

You might try to use a PC fan speed adjuster on it, or just a small resistor. Search google for what size resistors people use to slow the fan down and make it quieter - I've never done it that way. Or just experiment!

You will only really know by trying it, but I bet that removing it completely is a bad idea. You might get away with slowing the fan down.

A final idea: buy a quieter fan, but I guess you want to do it more cheaply.

Edit to add: I am assuming the fan is powered from the 12V - check that!!! There is a possibility it might run from the mains on an old PSU. If so, don't mess with it.

 

[Pancra85]

thanks for the advice!
I will try adding a resistor

 

[Audioguru]

A fan with a small propeller spins it very fast (and is noisy).
But a fan with a large propeller spins it slower (and is less noisy) to produce the same air flow.