Dual Power Supplies

[char507]

How do you setup dual power supplies?

 

[Ice Czar]

you mean synch 2 PSU each as a seperate bus?

1. Hardwired
2. With a relay

or employing a shared bus? Like a redundant PSU?

1. with resistors
2. with mosfets
or how its really done
3. with diodes (Single Source Fault Tolerant Power Systems)

I own several redundant PSUs and ran a Hardwired pair for over 2 years

 

[The_In_Kid]

just posting here so i can remember

 

[Ice Czar]

Id recommend saving that "with diodes" webpage
it never sticks around long in the same place and I have to go find it again
this is like the 7th time

actual title
Power Supply System Integration Part 1: Single Source Fault Tolerant Power Systems
@ Power Electronics Technology

 

[CleanSlate]

could just splice the connections that go to the motherboard together couldn't you? Then you'd be feeding as much as the board needs.. and then solder the stupid psu's together and vuala monamie dual psus.

~Adam

 

[unhappy_mage]

there are splices that have two female atx connectors and one male... these do basically the same thing as the diode mothod. no idea where to find them, just i've seen them. if you're willing to put up with the inconvenience, you could get an at power supply (not atx) and power it on seperately. i used to have one of these for my scsi raid array. aahh, those were the days.

 

[Vertigo Acid]

The problem with just splicing together two power supplies is that if the rails are at different voltages (which they will be), there will be energy flow between the supplies, which is bad.