[Soekris] Hard power problem with net5501-70

[ymartin]

We tried different scenarios... Low voltage seems to be more stable, if this
can help.

(we used 7.5V. and 9V. on a switching power-supply and never blocked,
perhaps we are lucky...)

YM


Soren Kristensen wrote:
> 
> Hi,
> 
> It's a known problem that we're working on right now. More info shortly.
> 
> 
> Best Regards,
> 
> 
> Soren Kristensen
> 
> CEO & Chief Engineer
> Soekris Engineering, Inc.
> 
> 
> ymartin wrote:
>> 
>> We got some hard power problems here with 20 new net5501-70 (serials
>> numbers
>> from 173070 to 173089):
>> -> 
>> When we unplugged the power-supply then re-plug, sometime it doesn't
>> restart, without any reason.
>> - We are using 12V 1.5A power supply from Globtek and one PCI card
>> plugged
>> on the Net5501-70.
>> 
>> What we do :
>> 
>> We tried different voltages from 7.5 to 15 Volts without any stable
>> result.
>> - With input at 7.5V., there is a small noise probably generated by
>> internal
>> converter (aprox. 130mV/300kHz) but I don't think this will affect the
>> board
>> (tested on 12V. pins).
>> - With input at 12V. noise is insignificant.
>> - Hard power problems "looks like" more stable with low voltage (7.5V)
>> 
>> Is it a known problem? What can we do to resolve this issue?
>> 
>> 
>> -----
>> Regards,
>> 
>> Yves MARTIN
>> ymartin at PointCA.com
>> PointCA Télécom
>> 
>> Tél (514) 381-5151 #101
>> SF/TF 1 866-781-5151
>> www.PointCA.com
>> 
> _______________________________________________
> Soekris-tech mailing list
> Soekris-tech at lists.soekris.com
> http://lists.soekris.com/mailman/listinfo/soekris-tech
> 
> 


-----
Regards,

Yves MARTIN
ymartin at PointCA.com
PointCA Télécom

Tél (514) 381-5151 #101
SF/TF 1 866-781-5151
www.PointCA.com

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