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Subject: Re: Help with power supply upgrade.

From: "djbrow54" <davebr@...>
Date: 2007-04-12

I should add that even with my supplies lightly loaded I had trouble
with them powering up correctly. I ended up designing my own PS
sequencing circuit before Ken did his to solve the problem. I keep an
excel spreadsheet of my current. I have measured all of my modules so
these are representative currents. The first 4 are all 800 mA power
supplies and the last is a 400 mA supply. I was seeing power-on
problems on the 461/448 and 324/231 loads. I do have before and after
photos of the supplies with my delay if people are interested. It
made a big difference in shortening the power up from 40 mS to around
5 mS.

For external loads, such as my keyboard, I use the Tyco CPC Circular
Plastic Connectors which seem to work very reliably. I don't remember
the current rating but I doubt that they would be suitable for an
entire cabinet.

+15 -15
--- ---
568379
461448
324231
334114
265251

http://modularsynthesis.com/modules/DJB-Power/djbpower.htm

--- In motm@yahoogroups.com, ac <analoghell@...> wrote:
> FWIW I found that using CGS PSU delay boards to stop all the modules
> powering up at once in each cabinet makes the 900's way more stable.
> They can tolerate many more modules.