[sdiy] power switch bounce?

[mark verbos]

Tony, I'd be willing to mod the supplies. Could you send me the  
details of what you did to them?

Mark



On Mar 8, 2010, at 2:48 AM, Oakley Sound wrote:

> This is a known problem with Power One supplies - and their clones.  
> It is related to the current foldback limiting. Diodes on the rails  
> didn't seem to have much affect.
>
> I asked Power One about this - one chap got back to me and got all  
> shirty and told me that there was nothing I could do but buy a  
> bigger supply and that no one would give me the schematic so why did  
> I bother asking. The amusing thing was that only minutes earlier  
> someone else in the same company replied with lots of useful  
> information and a schematic.
>
> Ultimately, the upshot of this was that I modded several Power Ones  
> for standard current limit and removed the foldback limiting  
> completely. Whilst not the most acceptable solution it was a  
> workable one given the relatively large heatsinks and low currents  
> that these supplies were capable of.
>
> If modding the PSU is not acceptable I'd second going for one of  
> Ken's sequenced power up modules.
>
> Also, keep any raw power supply decoupling on each module down to  
> less than 3uF unless used with a series resistor.
>
> Tony
>
> www.oakleysound.com
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