Archive of the former Yahoo!Groups mailing list: MOTM

----- Original Message -----
From: Scott Evans, Gen Mgr <esresource@...>
I have been lurking about the list for a time and am enjoying every
minute of it. I am just beginning my thought process for a modular for
the studio (MOTM of course), and wanted to ask about the Power
One Power Supplies. I don't recall who had mentioned it on the list,
but this was an alternative to the 900 PS offering a higher load capacity.
Perhaps I have delusions of grandeur about how big of a synth I can
build, but I wanted to start here.
--------
Scott, the power supply in the MOTM-900 is a Power-One supply. However,
Paul has added all the extras you need, like a switch, power connection,
front panel, PCB to plug in your MOTM modules, etc. That makes it simple -
plug and play. If you buy the Power One supplies separately, you have to
supply that support suff yourself. Of course, you can and should get the
power disctribution PCBs from Paul if you choose that method. If you are
rack mounting your supply, you might as well buy what Paul sells ready to
go. If you are doing a wood case and plan custom wiring, you can buy a
Power One directly and fix up the AC, power switch and all just the way you
want it. You will need to add appropriate fuse protection.

The Power One supplies are available from all the regular mail order
sources. However, check the surplus mags first if you want to go that way.
I found 1.5 amp supplies that were fitted to a bracket, and then not used
for $19.95. Then I found brand new 5 amp supplies (yep 5 AMP) for $24.95.
That is just a fraction of the new price. Not junk, the good stuff at blow
out prices. But, surplus deals come and go. So, you have to buy what you
want now. Don't expect to always be able to buy at that price. And, if you
go that route, don't forget you have overhead wiring to do on your own.

----------
> Has anyone posted a schematic for this power supply?


You have to be into self punishment to build a power supply. You can buy
good ones so cheap. Of course, you need to know what you are buying. You
want a nice linear supply, not some cheap switching POS.

Try
www.mpja.com
www.mcmelectronics.com
for potential surplus deals.

Larry H