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[wxsig] Hot regulator

Rasputin Novgorod priapulus at yahoo.com
Tue Jul 18 15:57:47 UTC 2006


> I just built the TAPR 238+ Weather station controller
> and it seems to be working just fine, except the 5 volt
> regulator chip is hot. I can put my finger on it,
> or it's heat sink, but I can't keep it there.
> I'm feeding it 13.8vdc (my whole shack runs on 13.8 vdc).

There looks like there might be room to put a second 
heatsink on the underside of the board. I guess the first
thing to do is measure the current draw and see how close 
to it's limit the regulator is.

If it's not overloaded a second heatsink may make it acceptable.

/b

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