Modular Synth Panels

All, I am about to build a new cabinet for my modular, and with that I was going to upgrade my powersupply.
I want a power supply that will take care of ALL of my modules (including the newer digital MOTM ones like the 650, 730, etc). I was also thinking of including a "break out" distribution system for items not necessarily installed in the rack - i.e. desktop modules & etc....

I found a power one supply that I think would fulfill my needs and I was wondering if I need to do anything special to use it with my modular. i.e. Do I need to replace capacitors on the MOTM distribution boards?? Do I need to swap the switch & fuse assembly?? Do I need to use a different type of fuse (if so what value)? Please Please Please help me get this set up, I'm tired of using multiple power supplies (I've got about 45 modules - about 3/5 are built).



HDCC-150W-AG 150.
http://tinyurl. com/4q64wp

All help and suggestions would be greatly appreciated.

Thanks,
Jim

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I strongly recommend you get a few of Ken Stone's power supply delay  
boards:

http://www.cgs.synth.net/modules/cgs63_psd.html

Although you may have a power supply big enough for the steady state  
operation of your modules, it's quite common for those modules to suck  
too much power during the initial start up phase which can cause your  
power supply to go into a brain dead mode. I was having no end of  
problems with this for several years until I got some of Ken's boards.  
Since installing these in every cabinet I have not had one problem  
with power at startup. And, it's way cool when I turn on the power bar  
and hear all these relays click a half second apart. Manly, yes, very  
manly.

On 11-Sep-08, at 7:42 PM, James Elliott wrote:

>
> All, I am about to build a new cabinet for my modular, and with that  
> I was going to upgrade my powersupply.
> I want a power supply that will take care of ALL of my modules  
> (including the newer digital MOTM ones like the 650, 730, etc). I  
> was also thinking of including a "break out" distribution system for  
> items not necessarily installed in the rack - i.e. desktop modules &  
> etc....
>
> I found a power one supply that I think would fulfill my needs and I  
> was wondering if I need to do anything special to use it with my  
> modular. i.e. Do I need to replace capacitors on the MOTM  
> distribution boards?? Do I need to swap the switch & fuse assembly??  
> Do I need to use a different type of fuse (if so what value)? Please  
> Please Please help me get this set up, I'm tired of using multiple  
> power supplies (I've got about 45 modules - about 3/5 are built).
>
> HDCC-150W-AG 150.
> http://tinyurl. com/4q64wp
>
> All help and suggestions would be greatly appreciated.
>

As for CGS63, what is RDEL and RCO from components perspective? Wow  
can I calculate them and were to get the components afterwards.
Many thanks.


Thanks,

Erez Yaary
erez@...
http://www.yaary.com

On Sep 12, 2008, at 05:04 , Scott Juskiw wrote:

> I strongly recommend you get a few of Ken Stone's power supply delay
> boards:
>
> http://www.cgs.synth.net/modules/cgs63_psd.html
>
> Although you may have a power supply big enough for the steady state
> operation of your modules, it's quite common for those modules to suck
> too much power during the initial start up phase which can cause your
> power supply to go into a brain dead mode. I was having no end of
> problems with this for several years until I got some of Ken's boards.
> Since installing these in every cabinet I have not had one problem
> with power at startup. And, it's way cool when I turn on the power bar
> and hear all these relays click a half second apart. Manly, yes, very
> manly.
>
> On 11-Sep-08, at 7:42 PM, James Elliott wrote:
>
> >
> > All, I am about to build a new cabinet for my modular, and with that
> > I was going to upgrade my powersupply.
> > I want a power supply that will take care of ALL of my modules
> > (including the newer digital MOTM ones like the 650, 730, etc). I
> > was also thinking of including a "break out" distribution system for
> > items not necessarily installed in the rack - i.e. desktop modules &
> > etc....
> >
> > I found a power one supply that I think would fulfill my needs and I
> > was wondering if I need to do anything special to use it with my
> > modular. i.e. Do I need to replace capacitors on the MOTM
> > distribution boards?? Do I need to swap the switch & fuse assembly??
> > Do I need to use a different type of fuse (if so what value)? Please
> > Please Please help me get this set up, I'm tired of using multiple
> > power supplies (I've got about 45 modules - about 3/5 are built).
> >
> > HDCC-150W-AG 150.
> > http://tinyurl. com/4q64wp
> >
> > All help and suggestions would be greatly appreciated.
> >
>
>

RDEL is 1 Megohm. RCO you have to calculate for your relays. I posted  
the following message to the MOTM group a long time ago. It lists the  
parts you need from Mouser to build the CGS63.

------------------------------------------------

I've recently added Ken Stone's CGS63 power supply delay board to one  
of my MOTM synth cabinets. I'm happy to report that it has completely  
cured the startup problems I was having with that cabinet. I will be  
adding the CGS63 to all remaining cabinets and can highly recommend it  
to anyone else who is having power supply startup issues.

Note that the CGS63 will accommodate +/-15V alone, or +/-15V and +5V.  
I built the full circuit with support for +/-15V and +5V. Here is a  
Mouser parts list for the full circuit:

Quantity        Mouser#                 Desc.
1               512-1N4002              1N4002 diode
1               512-BC338               NPN transistor
1               511-UA741CN             741 op-amp
8               571-6404456             MTA-156 6-pin header
2               653-G6A-274P-DC12       12V relay
1               72-T20YP-500K           500K trimmer
1               291-47K-RC              47 kohm resistor
1               291-10K-RC              10 kohm resistor
1               291-1M-RC               1 Mohm resistor
1               291-100-RC              100 ohm resistor (RCO on CGS63)
1               140-XRL25V1.0-RC        1 uF capacitor

If you don't need +5V at all, and you're sure you never will, then use  
this Mouser parts list:

Quantity        Mouser#                 Desc.
1               512-1N4002              1N4002 diode
1               512-BC338               NPN transistor
1               511-UA741CN             741 op-amp
8               571-6404454             MTA-156 4-pin header
1               653-G6A-274P-DC12       12V relay
1               72-T20YP-500K           500K trimmer
1               291-47K-RC              47 kohm resistor
1               291-10K-RC              10 kohm resistor
1               291-1M-RC               1 Mohm resistor
1               291-200-RC              200 ohm resistor (RCO on CGS63)
1               140-XRL25V1.0-RC        1 uF capacitor

It is possible to add the +5V support later, but it would be a pain to  
upgrade, so make sure you make the right choice.

For some reason, the 100K trimmer is "obsolete" at Mouser. You can use  
any trimmer from 50K to 1M. I've listed the part number for a 500K  
trimmer, which is what I used.

On 13-Sep-08, at 3:25 PM, Erez Yaary wrote:

> As for CGS63, what is RDEL and RCO from components perspective? Wow  
> can I calculate them and were to get the components afterwards.
> Many thanks.
>