Switcher PS temperature...

Dwight K. Elvey dwight.elvey at amd.com
Fri Jan 14 13:24:44 CST 2005


>From: "Eric Smith" <eric at brouhaha.com>
>
>Bill wrote:
>> Anyway, after about 10 minutes of
>> operation with the case open and the new PS sitting off
>> to one side (clear all around), the two heat sinks are too
>> hot to touch.  Is that normal operation for this kind of
>> supply?
>
>No.  They're expected to be hot, but you should be able to
>keep your fingers on them for a couple of seconds.
>
>WARNING:  The heat sinks on open-frame switchers may be
>electrically hot as well as thermally.

Yes, like 400+ VDC with an ampere or 2 of capacity.
Dwight

>
>Eric
>
>





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