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Re: [Amps] Series PC Power Supplies

To: <>
Subject: Re: [Amps] Series PC Power Supplies
From: "Jim Forsyth" <>
Date: Thu, 1 Jun 2006 14:21:47 -0700
List-post: <>
In what way is the load unbalanced and how would the diodes help? In a 
series connection all supplies have the same current and each contributes 
whatever voltage it is set to. How does one get to be overburdened? How do 
the diodes ever get to conduct? If they don't conduct then they are having 
no effect on anything.

I can see that the diodes might help at turnoff to prevent a supplies output 
capacitor from charging up in reverse but other than that I must be missing 
the point.

Jim, AF6O

----- Original Message ----- 
From: "Will Matney" <>
To: <>
Sent: Thursday, June 01, 2006 12:07 PM
Subject: Re: [Amps] Series PC Power Supplies

> Another recommended practice is to place rectifiers across the + and - of 
> each supply to try and balance the load. If the load is not balanced 
> across each, one supply can be overburdened if just slightly off from the 
> others. The rectifiers need to be rated at the same current capability of 
> the total supply in a series connection. 

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