Refers to an abnormal flow of current that is due to an improperly grounded electrical outlet.


The creation of a virtual (rather than actual) version of something, such as an operating system, a server, a storage device, or network resource. Operating systems virtualization is the use of software to allow a piece of hardware to run multiple operating system images at the same time.

Volt/Voltage (V)

The difference in electric potential between two points when one amp of current dissipates one watt of power.

Voltage Regulator

A device or component that normalizes voltage to a certain standard when it is fluctuating.

Voltage Sensitivity

Allows users to select a model’s sensitivity mode according to the power quality and the equipment.

Wall Tap Plug

Enables the unit to plug into a wall outlet without a power cord. Styles and features vary for wall tap plugs.

Watts (W)

A watt is a unit of measure for true power consumption. One watt is one ampere of electrical current flowing at one volt.


A graphical representation of a signal in the form of a wave that displays how alternating current (AC) varies over time. Common waveform representations include sine wave, square wave, and trapezoidal wave. An electronic instrument called an oscilloscope is used to measure a waveform on a display screen.

Windows Sidebar

Contains Microsoft Gadgets which display information or control external applications. Only available on Windows Vista.


A device that converts AC line voltage to a higher or lower value.