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■ chapter 3 battery power & power management
Using Windows Power Options
Windows Power Management provides basic power saving
features. In the Windows Power Options Properties [Start >
Settings > Control Panel > Power Options] dialogue box, you may
enter time-out values for display and hard disk drive. Windows
power manager saves power by turning off hard drive after 1
minute of inactivity, for example.
Windows' Power Schemes
The power management control panel in Windows XP, known
as Power Schemes, is designed to provide the user with an
easy-to-use interface. The Power Schemes tab can be found
in the Power Options Properties panel that is accessible via
the control panel window.
Schemes are easy to understand, based on notebook usage
scenarios, and control not only processor power usage but
other system peripherals as well.
Go to [Start > Settings > Control Panel] and double-click the
Power Options icon.
Always on mode puts the processor into maximum
performance mode, which provides no power saving. The
other schemes control processor performance based on
demand. For example, Max Battery mode lowers the
processor's speed and voltage to conserve power as much as
possible.
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