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IT Support & Hardware · Intermediate

Line Conditioner

A device that smooths voltage fluctuations, filters noise, and regulates sags and swells in AC power.

Definition

Line conditioners provide clean, steady voltage to sensitive equipment without battery backup. They address brownouts, sags, and electrical noise. A line-interactive or online UPS provides similar conditioning plus battery backup.

Example

A line conditioner protects lab equipment in a building with frequent voltage sags.

Exam tip

Brownouts and sags call for a line conditioner or UPS; spikes call for surge suppression.

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