Power Manager uses inproper terms

[Pastor JW]

On Friday 13 March 2009 11:58:54 am James T Snell wrote:
> When I plug my laptop in to its power adapter, the Power Manager says the
> computer is on AC power. This is a misnomer at least in my case because the
> computer only sees a DC power source. The big box that power laptop power
> cords have contains an AC to DC adapter. The same process occurs inside the
> power supply of a desktop and thus the actual computer never sees anything
> but DC power.

The main question is, "Does your power come from an AC source or battery 
pack?"   Battery power tends to drain the battery till it is dead or so low 
the computer does not run any more.  AC on the other hand provides a constant 
power source to the transformer so the computer will run as long as it is 
plugged in.  Computers do only run on DC, that is true,  However, both my 
desktop (1500 watt APC) and laptop have battery backup in case there is no AC 
so I would contend that it is correctly named.  Can either of them run 
without a battery?   Yes, both of them can!  But only if power is supplied 
from another source.  



-- 
73 de N7PSV aka Pastor JW <n><   PDGA# 35276
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