[sdiy] Power supply for custom Eurorack case

[Matti Palm]

Tried to post a too large image last time for the list. Sorry if this is a
double post:

I'll upload the BOM. You can also open it in KiCad.
A couple of things you may or may not like:
- The heatsinks are put on the outside and fastened in the case separately.
- The ground plane and power traces are pretty good at sucking out the heat
when soldering. Crank up the temp.
- Be careful with the mains. I used an aluminum box where I attach the
ground wire and a double fused switch, so I don't drop a screwdriver on the
high voltage stuff. Also used a lot of heat shrink there.

/matti

On Tue, Jan 28, 2020 at 9:19 PM Didier Leplae <didierleplae at yahoo.com>
wrote:

> I'm gonna go ahead and order some of these PCBs that you sent Matti.
> Thanks!
> I may or may not use the PSUs but for $2 I can order 5 of them, so why not?
> Is there a BOM with these?
>
> On Tuesday, January 28, 2020, 02:48:03 AM EST, Matti Palm <
> matti.palm at gmail.com> wrote:
>
>
> I made bus boards that I am happy with:
> https://github.com/mattip123/Eurorack-Bus-board
> And also a simple linear PSU with LM317/LM337 that I find low noise:
> https://github.com/mattip123/PSU-Matti
> Maybe it can be of help if you use KiCad and want a starting point.
>
> /matti
>
> On Tue, Jan 28, 2020 at 8:12 AM Brian Willoughby <brianw at audiobanshee.com>
> wrote:
>
> If you’re going to the trouble of making custom bus boards, why not just
> put a few extra parts on there and make a power supply? Grab a book that
> covers audio power supplies.
>
> Lately, I’ve been favoring external wall warts that output AC instead of
> the typical DC. I then use the simply two-conductor barrel connector to
> feed a bog standard linear regulator. If you need multiple voltages, pull
> them all off the same leg.
>
>
> I just bought a 7U by 104HP case myself, so I’m just getting started
> designing my own 1U modules. I’m still new myself, but it seems that 1U is
> typically 5V-powered, and intellijel seem to have simpler 2-wire 5V supply
> cables and connectors for the same on their power supplies. Then again, I
> may be missing something.
>
> Brian
>
>
> On Jan 27, 2020, at 9:51 PM, Didier Leplae via Synth-diy <
> synth-diy at synth-diy.org> wrote:
> >
> >> How are you handling distribution?
> >
> > I was considering making some custom bus boards as well, just to save
> $$.
>
>
> On Mon, Jan 27, 2020 at 10:28 PM Didier Leplae via Synth-diy <
> synth-diy at synth-diy.org> wrote:
> > I hope this question hasn't been covered ad nauseam in the past but here
> goes...
> >
> > I built a custom case for Eurorack that is 84 hp wide.
> > It has 7 "normal" rows plus a 1u row. (I guess that makes a total of 672
> hp)
> >
> > I have roughly figured I will need a power supply with @ 3A for +12V and
> 2A for -12V. (The 5V seems to be hardly used and yet the power supplies
> I've looked at have an overabundance, probably 1A would be plenty )
>
>
>
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