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A surge protector is a device that protects electronics from damage caused by power surges, which are sudden, brief increases in voltage. It works by absorbing or redirecting excess voltage to the ground, preventing sensitive computer components and other equipment from being damaged by spikes from sources like lightning, large appliances, or power grid issues.

How it works

Absorbs excess voltage: When the voltage exceeds a safe level, the surge protector's internal components, such as metal oxide varistors (MOVs), absorb the extra energy.

Diverts to ground: These components divert the excess voltage safely into the building's ground wire, which is why a proper ground connection is crucial.

Normalizes power flow: Once the surge passes, the surge protector allows power to return to its normal, steady flow.

Why it's important for computers

Prevents hardware damage: Computer components are very sensitive to voltage spikes, which can cause immediate malfunction or gradual degradation of the hardware.

Safeguards data: By protecting the computer's internal components, a surge protector indirectly helps prevent data loss that could result from a hardware failure caused by a surge.

Protects peripherals: It also safeguards other connected peripherals, such as monitors, external hard drives, and printers.