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[wxsig] a comment on regulators

Ken.A.Brown at noaa.gov Ken.A.Brown at noaa.gov
Tue Dec 19 02:23:00 UTC 2006


Hi Bill,

Could you give us a part number and source for the drop in
replacement for the 7805.  That sounds like it may solve some
problems in several places.

Ken Brown


----- Original Message -----
From: Bill Hosking <hoskingb at earthlink.net>
Date: Tuesday, December 19, 2006 1:57 am
Subject: [wxsig] a comment on regulators

> Several comments have popped up recently regarding the 7805 and 
> it's heat in 
> the T238. There is a drop-in replacement by TI that is a switching 
> regulator 
> with about 80% efficiency. It is pricey at about $12 but (in my 
> mind) well 
> worth the reduction in heat (and drop in power). I have several 
> operating 
> around here and do HF and have had no indication of any hash.
> 
> 73
> Bill W7JSW 
> 
> 
> 
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