Well, the 300W power supply, in an ideal world, will radiate NO heat and
have no cooling requirements.

The components connected to it, however, typicially radiate radiation.
 This is in the form of heat, light, EM, RF, and other fields.

-Adam

Micro Eng wrote:

> changing topics from my current ICD problems...
>
> If you have a 300W power supply, and *assume* (however bad it is) that it
> will be drawing a total of 300W (lets pretend its a perfect world and no
> power factor correction, or the supply is PF corrected)then if you
> want to
> calculate the BTU's to determine the cooling requirements, do you
> simply use
> the 300W figure?
>
> What I am getting at can you safely approximate the fact that the entire
> 300W will at some point be dissipated as heat?  Or only a certain
> percentage?
>
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