power conditionerAlso called a line conditioner, a device that sits between a computer and its power supply, typically a wall outlet. The power conditioner provides protection against surges in power just as a surge protector does, but a power conditioner also maintains a continuous voltage fed to the computer during temporary voltage reductions, such as a brownout. This is referred to as conditioning. Power conditioners also can filter EMI emanating from a power source and can smooth the rhythmic cycle of alternating current.
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