MOTM

Hi Jim,

 

At a guess I'd say the MOTM modules use an average of approximately 25 ma @
15 volts per module.  25 ma x 45 modules is 1125 ma  or 1.125 amps. Even if
you bump up by 40% more amperage for good measure you are still only up to a
hair over 1.5 amps. 

 

I recommend that you consider saving yourself some money and space in your
cabinet and get the HCBB-75W-AG which is 1.5 amps @ +/-15 and 6 amps @ +5
and $75 cheaper than the HDCC-150W-AG you are considering.

 

Do I need to replace capacitors on the MOTM distribution boards??

Probably not since caps are rated for their voltage handling and the voltage
isn't changing but Paul will have the best answer on this (and Paul would
have the best answers on all of these questions but I wanna help! He's too
busy soldering anyways!  ;-)

 

Do I need to swap the switch & fuse assembly??

Paul recently posted  the models of the related parts in the MOTM 900 power
supply:

 

Carling Switch Model #62115919-0-9-V, Allied Electronics Stock #683-2007.

The fuse/power inlet is Digikey #Q203-ND.

 

With that you could look up the specs of these parts and compare to the
requirements of your proposed power supply.  Here is a page you might find
useful: http://www.powerstream.com/Amps-Watts.htm

 

I'm guessing that you wont need to change these out at all but it doesn't
hurt to verify to make sure you are set up correctly.

 

 

Do I need to use a different type of fuse (if so what value)?

Probably. The PowerOne supplies have the recommended fuse values written on
the outside of them.  Radio Shack, Home Depot etc carry fuses so unless you
live way outside of a big city you should be able to find some on the day
you need them.

 

Best of luck!

 

John L Rice

 

PS - I recently finished my 'DIY' PowerOne power supply. A couple pictures
are in the photos section for this mailing list.

From: motm@yahoogroups.com [mailto:motm@yahoogroups.com] On Behalf Of James
Elliott
Sent: Thursday, September 11, 2008 5:16 PM
To: motm@yahoogroups.com
Subject: [motm] New Cabinet & Powersupply

 

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

 

----- Original Message ----
From: babysealclub <babysealclub@...>
To: motm@yahoogroups.com
Sent: Thursday, September 11, 2008 1:37:30 AM
Subject: [motm] Modules for sale...

Selling off some Modules...

All modules were assembled from kits. Priced at about 80% new 
assembled price, but please feel free to make an offer.

MOTM-101 Noise/Sample and Hold $250
MOTM-320 Voltage-Controlled LFO $205
MOTM-380 Quad LFO Module $190
MOTM-390 Micro LFO Module $175
MOTM-420 Voltage-Controlled Filter (Korg MS-20) $270
MOTM-440 Discrete OTA Voltage-Controlled Lowpass Filter with VC 
Resonance $310
MOTM-480 CS-80 Resonant Filter $320
MOTM-490 Micro VCF Module (Moog Tran Ladder) $230
MOTM-700 Dual 2:1 Voltage-Controller Router $225
MOTM-820 Voltage-Controlled Lag Processor $250
MOTM-830 Dual-Mode Mixer $260
MOTM-850 Pedal Interface $185

Synthesizers. com Q118 Instrument Interface with MOTM power Adapter 
behind a Schaffer Panel. $120

2 Pair of MOTM Mounting Rails $40 each

Modules include Mounting screws and power cable. Documentation 
available on request.

If you are interested, please contact me off list.
Thanks,
Todd Fletcher
babysealclub@ <mailto:babysealclub%40yahoo.com>  yahoo.com

Is a single large PS the best option for a big system?  I have
multiple 19" racks, 3 tiers each, and have been using a separate 1-amp
supply for each, with grounds tied together at the PS.  Helps when i
rearrange cabinets, and i guess i was imagining that might help
isolate some "noisy" (non-motm) modules.  but would it be better to
put all my eggs in one power basket?

b

--- In motm@yahoogroups.com, "Paul Schreiber" <synth1@...> wrote:
>
> HDCC-150W-AG 150.
> http://tinyurl.com/4q64wp
> 
> Lord, with that supply you could power 100 MOTM modules and never
blink :)

> 
> Paul S.
>

For multiple cabinets, I prefer the one power supply per cabinet approach. It s just more practical, and I have never had grounding problems. Moe ... -- Dave

! power supply *per cabinet* is the way to go. Otherwise, you will always 
have added ground noise.

Paul S.