linuxcaffe; thinkpad battery life
Peter L. Peres
plp-ysDPMY98cNQDDBjDh4tngg at public.gmane.org
Thu Oct 28 09:31:10 UTC 2004
On Wed, 27 Oct 2004, JAMES KNOTT wrote:
> --- "Peter L. Peres" <plp-ysDPMY98cNQDDBjDh4tngg at public.gmane.org> wrote:
>
>
>> You can't run long dc cables to laptops, the voltage
>> drop is going to
>> 'kill' the idea quickly.
>
> Unless the power supply supports remote sensing. I've
> seen a few of those. They have an extra pair of
> wires, which is used to measure voltage at the load,
> eliminating an problem with voltage drop in the load
> carrying wires.
But then they only feed one load. Sense feedback does not work with
several loads, they need distributed regulators. That is where the
'complicated' I was referring to starts ...
Peter
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