Wiardgroup

yes - a typo - thanks for the correction!

gary



kwote uno" <kwoter@...> wrote:
>
> blacet psu's are 500ma just for clarification. i'm sure it was just
a simple
> typo.
> 
> On Dec 5, 2007 12:23 PM, Gary Chang <gchang@...> wrote:
> 
> >    "randaleem" <randaleem@> wrote:
> > >
> > > Hi Gary,
> > >
> > > Thank you for taking the time to reply. Your additional comments and
> > > information are very helpful!
> > >
> > > Your factory provided power cable solution seems a good choice. I
> > > wonder if this is an option for my customer? Grant?
> > >
> > > A quick question for everybody, since Gary has said he is busy: Do
> > > you think a DIN could be mounted at the rear,bottom of the PCB
> > > enclosure? If the modules are already 9" deep, even a right
angle DIN
> > > like I mentioned in the last message is more additional depth than I
> > > would want. I'll have to ask my customer how he feels about
soldering
> > > a cable like yours (Gary's) to the existing DIN, or the PCB power
> > > points. Perhaps the existing wires from DIN to PCB are long
enough to
> > > allow the existing DIN to be moved to the rear of the bottom,
where a
> > > 2" protrusion wouldn't matter? That way it could be returned to its
> > > original placement if the module were sold. (Though I'd for sure
> > > prefer the bottom facing power connector!)
> >
> > The power cable on my modules are simple wires that are terminated in
> > the 4 pin molex connector that is on the other end of the stock Wiard
> > power cable (which is DIN to molex). Don't waste your time drilling
> > and mounting a new din connector.
> > >
> > > The chest weight for my project is not as critical, since i've been
> > > told it will mostly be used in Studio work; with only occasional
> > > travels. But the case will still be light for its appearance, which
> > > will be aiming to "look" heavy, with an anciently Asian or Nordic
> > > vibe. Both of which cultures are known for their "moving" chests.<G>
> > >
> > Even travelling "occasionally" will create great demands on your
> > client's Wiard System - after all of the great expense and effort to
> > create such a device, it would be awful to forever be looking at the
> > gash on the cabinet made on one of the system's "occasional" trips.
> >
> > My system cases, by sheer dumb luck fit into two of Pelican's Largest
> > cases. They are made of extruded high impact composite materials,
> > they have wheels and are waterproof. (Ironically, the large unit's
> > case was designed to transport 12 M16 rifles!)
> >
> > > The power supply for design purposes will needs be inside the main
> > > chest. But as I've done this kind of work before it will have
its own
> > > area where it is thermally isolated and shielded from the main
> > > panels, so your valid concerns about heat and shielding have been
> > > addressed.
> >
> > I understand your design aesthetic about the internal PSU. The only
> > issue that I tackled after getting my system's modules together was
> > messing with the system's power supply sources and each module group's
> > requirements. I found that it was more stable to put all of the VCOs
> > on a separate power supply than the rest of the system, and to employ
> > 3 instead of 2 power supplies to power the system.
> >
> > If you are using Blacet PSUs, They are only 50mA supplies, so it is a
> > possibilty that you may need more than one to power a dense system....
> >
> >
> > >
> > > Thank you again for your time and the voice of your extensive
> > > experience. And while I'm replying, Thank You for the music as well!
> > >
> > > Kind regards, Randal
> > >
> > > In wiardgroup@yahoogroups.com <wiardgroup%40yahoogroups.com>, "Gary
> > Chang" <gchang@> wrote:
> > > >
> > > > Randal,
> > > >
> > > > I apologize for not chiming i sooner, but I am desperately busy
> > > right now....
> > >
> > > > On my cabinet, I save the additional 2 inches of depth at the back
> > > > by having Grant add a 24 inch power cable hardwired to the same pc
> > > > board points as the din connector, but fed through to the
bottom of
> > > > the metal box. (As Paul suggested, I used the Blacet PSCONNs to
> > > > buss power to several modules in the same cabinet).
> > > >
> > > > Although this is irrelevant to your project, one of the reasons
> > > > that I created an aluminum case is the weight consideration -
my 24
> > > > module case, which is a monocoque construction weighs under 40lbs.
> > > > with all modules installed (the modules are about 1 lb. a
piece, so
> > > > the case by itself only weighs a little over 15 lbs.). I can
> > > > actually carry it by myself. A metal case adds additional
> > > > shielding, too.
> > > >
> > > > You should seriously consider NOT internally mounting your power
> > > > supplies - the added heat may create instability issues -
mount the
> > > > power sources outboard!
> > > >
> > > > gary
> > >
> >
> >   
> >
>