Running 2 Powers Supplies at Once

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[Spectre]

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Ice Czar said:
A prudent precaution



my "stock" dual PSU answer
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

a rudimentary tutorial for ATX dual PSUs
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synch 2 PSU each as a seperate bus

1. Hardwired (what a CMStacker's adapter does)
2. With a relay

or employing a shared bus Like a redundant PSU

1. with resistors
2. with mosfets
3. with diodes (Single Source Fault Tolerant Power Systems)

(3 is slightly outdated now see gee's post > http://hardforum.com/showthread.php?t=776885)

I ran 2 hardwired 400 watts and a large RAID array for 3 years without issue on one of my boards (Abit KR7A)
however it may have been a contributing factor in the death of another board (ECS whatever :p )
though Im not at all sure about that

not running them synchd however certainly corrupted the hell out of the array :p
eventually switched to a Zippy Emacs MR3-6450P N+1
with considerably less total wattage but plenty for what was actually required
with 32A on the +12V rail for the drives and considering the mobo's VRM was powered off the +5V
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for hardwired thats

between the 2 PSUs its
green to green (POW_ON \ power on)
black to black (COM \ ground)

and on just the second PSU
grey to black (Power Good to COM\Ground)

or another commercial method

Remote/Secondary Power Supply Starter Cable
 
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