Official GIGABYTE Forum
Off-Topic => General discussions => Topic started by: Aussie Allan on October 28, 2011, 09:38:28 pm
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OK....Ive busted my noggin all after-noon on this one ..... Don't ask why (Just yet) just need an answer from an electronics wizz...
Take 6 ... 12V switching power supply's @ 20A each (240W max per unit) ..... now combine them all into a single parallel rail ....with an output of 12V-120A (1440W)
Now I know that if there's a tiny voltage difference .....it will flow into the lowest PSU and "POW" .....
Who knows about and how a dual bridge rectifier (EDIT: or is it Dual Diode) can be added to the diagram to get me out of jail.....or if you have alternative.....lets hear it!
Aussie Allan
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Hi Allan,
The bridge rectifier that you are asking about is usually used to make DC output out of an AC input. I have drawn you a diagram of how it works.
I would have thought that they will already have one in each PSU anyway. Besides a single diode on the output rail should be enough to stop any problem.
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Hi Allan,
The bridge rectifier that you are asking about is usually used to make DC output out of an AC input. I have drawn you a diagram of how it works.
I would have thought that they will already have one in each PSU anyway. Besides a single diode on the output rail should be enough to stop any problem.
Wow! Nice drawing...... ;) .....Yeah, .... already got this far but apparently , can't trust the on-board Diode on the + rail ..... having the same PSU amp-age / voltage feeding down the Positive rail wasn't factored into most designs :D......so yes....sort of right ....but have to beef-up the safety substantially .... I think I know what to do but always open to ideas..... please, keep the information coming in please!
Have included how I think I'll proceed but nowhere near the drawing quality as......well maybe I need better pencils :D
Aussie Allan
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Yes that is fairly much as I was suggesting there with a single diode on each positive output.