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Re: Switched mode PSU

In message <hcfa9m$bbs$1@news.eternal-september.org>, Yeti
<yeti@ayrshore.com> writes
>Brian Howie wrote:
>> In message <hcekj2$ph1$1@news.albasani.net>, EM87
>><blastfromthepast@gmx.com> writes
>>> I need a lightweight 13.8V PSU to use for portable VHF/UHF Contests,
>>>this will be close to the antenna so I need one that is quiet at VHF.
>>> Most of the reviews that I have seen on-line only mention sprogs on
>>>the HF bands, can anyone recommend a quiet one?
>>>
>>> EM87
>>  A computer SMPS is very light and  will give 12V @ 25A . They are
>>quite  quiet at VHF.  I've run the FT847 from one.
>>  Snip the leads off and put on a couple of terminals.
>>  Brian
>
>A very expensive computer PSU will give 25A. Most will give 10 or less.
>
>a lot are missing essential filters and are electrically noisy.

The one I tried was 20A. I think you can draw more if you don't load the
+5V.  YMMV.
It was  quiet on VHF, and it was free !!! I've a pile of them in the
junk mine.

Come on - experiment.

Brian
--
Brian Howie

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