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
--
The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml





More information about the Legacy mailing list