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Emax

Index last updated: 2026-04-28 23:23 UTC

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Re: [emax] pc psu

2005-11-12 by davide aprea

this is great news Jean-Marc, thank you very much!  i'm gonna try it soon!

last question :  originally there were 3 different sources for every 
different voltage on the psu, and also 3 different spots on the board.
is it safe if I wire the 3 equally labeled connectors on the board to 
the same voltage source instead of having 3? (can I short ,say ,more  
-12v connectors on the board together, and wire them to the same -12v 
connector on the psu?).
I'm asking because atx psu features only one -12v source and of course 
because i'm dumb.

thanks a lot!
Davide
 
Jean-Marc M\ufffdlot wrote:

>Hi !
>I did a PSU replacement on a Emu EMAX S.E. rack some months ago... The 
>original PSU failed in a capacitor and schkotty diod ... I never find 
>those parts in my area, and a new psu was around $80 (but as i'm living 
>in belgium ... the cost is much more expansive with additionals taxes). 
>So i did the "swap" myself between a typical ATX PSU and the original one...
>
>It's really simple. Just use a voltmeter ... A typical ATX can provide 
>-12v / -5 / +5 easily (the ATX psu is much more powered than the emu 
>one). There are enought space inside the Emax. I used a special glue to 
>maintain the PSU.
>The sad side is you'll get the PSU fan noise but the sampling process is 
>not affected (noise parasits ...) !
>The ON-OFF Wire on a ATX psu could be found here : 
>http://www.helpwithpcs.com/courses/power-supply-basics-inc-pinouts.htm
>
>You have to close the circuit between PS_ON & a GND pin to get the PSU ON.
>
>Hope this help,
>J/M
>
>  
>

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