[hpsdr] M4-ATX, 250w output, 6v to 30v wide input Intelligent Automotive DC-DC Car PC Power Supply

[Henry Vredegoor]

Hello Alan, All,

I have read through the posts on the forum mentioned by you and a few other
sources I found on the net and I also found that it is not clear how good or
bad this M4-ATX is from the various opinions.
So I think if I decide to use this mobile PSU I will have to take some
chances and probably may have to do some extra filtering and shielding.

I would rather like to use a DIY linear supply, avoiding the power noise
issues of a SMPSU altogether, but energy efficiency is more important for me
here.

I think the OPUS seems OK too, but I think getting it to Europe/The
Netherlands will be costly due to shipping, taxes and
administration/handling fees.
(Didn't find their policy on shipping to Europe on their website but this is
often a show stopper. Neither found dealers in Europe, would have to look
further)

Thank you for your reply,

73's,

Henry.


> -----Original Message-----
> From: hpsdr-bounces at lists.openhpsdr.org 
> [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Alan 
> Hochhalter
> Sent: zaterdag 26 september 2009 4:58
> To: hpsdr at lists.openhpsdr.org
> Subject: Re: [hpsdr] M4-ATX, 250w output, 6v to 30v wide 
> input Intelligent Automotive DC-DC Car PC Power Supply
> 
> 
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Henry Vredegoor wrote:
> > ***** High Performance Software Defined Radio Discussion List *****
> >
> >   
> >
> > 
> --------------------------------------------------------------
> ----------
> >
> > Hello All,
> >  
> > Is there anybody on the list who has used this 12 Volt mobile PSU, 
> > maybe even as a PSU for HPSDR?
> > Would like to know how this PSU behaves, in particular wrt. 
> PSU noise etc.
> >  
> > 
> http://www.mini-box.com/M4-ATX-intelligent-ATX-automotive-powe
r-supply-6-30V-power-your-PC-in-a-car-
>  
>  
> 73's,
>  
> Henry.
Henry,

I don't have one of those, but if you go to 
http://www.mp3car.com/vbulletin/ and search you'll find people who have 
used that supply (and a number of similar supplies as well).  From what 
I remember I think the reviews have been mixed.  It seems like the Opus 
brand supplies have a better reputation. I've got an earlier Opus and an 
M2-ATX.  My Opus failed due to user error, and so far the M2-ATX I got 
to replace it when I needed one fast seems OK but it gets mixed reviews 
as well.  It apparently has a tendency to fry motherboards when it 
fails, so if the M4 has a similar design it may have the same issue.  A 
set of hpsdr boards costs a lot more than my mini-itx motherboard.   The 
mp3car store (I have no connection other than buying a few things and 
being a forum member.) sells several models of supplies like that since 
they're popular among people making their own in-car PC but they may not 
be a convenient source depending on where you live.

Alan
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