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[wxsig] a comment on regulators

Bill Hosking hoskingb at earthlink.net
Tue Dec 19 03:11:18 UTC 2006


Hi Ken.
The 5 volt version is PT5101, The 12V Version is a PT5102N both from TI. I 
get them from Digi-Key but anyone who stocks Texas Instruments parts should 
have it. There are several different cases, I believe the "N" case is the 
vertical mount similar to the 7805.

Bill
----- Original Message ----- 
From: <Ken.A.Brown at noaa.gov>
To: "TAPR Weather Station SIG Mailing List" <wxsig at lists.tapr.org>
Sent: Monday, December 18, 2006 7:23 PM
Subject: Re: [wxsig] a comment on regulators


>
> 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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>> wxsig at lists.tapr.org
>> https://lists.tapr.org/cgi-bin/mailman/listinfo/wxsig
>>
>
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