On Wed, 6 Jun 2007, Sean Hopkins wrote:
> On 6/5/07, Gonzalo A. de la Vega <> wrote:
> >
> > The switcher in the TSENC720 enclosure (I guess that's what you are
> > using) sources up to 1A => 5W, which is enough in theory, but
> > according to the 9600 manual, some disks may take up to 1A peak and
> > then you are in trouble. Check that in the manual. In case the peak
> > current is 1A it may be a very short pulse (like when spinning up the
> > disk), so a bigger capacitor could help, say 440 or 1000uF (the PS
> > comes with 66uF).
> >
>
> Thanks for the hints. I will see if I can hook anything up to see how much
> current is being drawn. I have some sensitive voltimeters that I can use.
You'll need ammeters :-)
As people have hinted, there is the problem that when you start an a
device with an electric motor, there is a large initial, transient,
current that is needed to get the motor started and upto speed. After that
the current drops to that quoted by the manufacturers. It is this shart up
current that is probably causing your problem. You will need a psu that
can provide the boards current, and this large initial motor current.
>
> I'm also supposing you are bypassing the TS7260 built in PS.
> >
>
> I am using the device as supplied by EA - board was mounted in the enclosure
> and everything was all hooked up.
>
> Thanks
>
> Sean
>
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