[ltp] Minimal wattage?

[Richard Neill]

Mendel Cooper wrote:
> On Mon, 12 Feb 2007, Damien Challet wrote:
> 
>> I think that it would be interesting to all to report the minimal power
>> consumption of various models, so as to have reference point when tuning
>> one's system. A page on thinkwiki could be set up.
> 
> As other messages in this thread have suggested, this would indeed
> be useful, if for nothing else than to determine which AC adaptors
> can be used with which models. Might save money not having to buy a new
> adaptor if you have an old one laying around.
> 
> I've used a 56-watt supply intended for a 770-series Thinkpad on an A31,
> and without any apparent problems. I've been careful *not* to have the
> battery inserted, though.
> 

I would have thought you would want the battery present. Provided that 
the battery is allowed to charge before the machine is booted, it can 
then be used as an extra "UPS" in case the CPU makes a sudden demand on 
the power.

You could also draw an extra 2.5Watt per USB port + PCMCIA devices + run 
CDROM at high-speed. So the PSU spec is quite cautious for these cases.


Note that a slightly overloaded PSU will continue to work fairly 
normally, but may get rather hot.

Richard