What is the main purpose of a surge protector?

The main purpose of a surge protector is to shield devices from voltage spikes. Voltage spikes, often caused by lightning strikes, power outages, or fluctuations in the electrical supply, can damage sensitive electronic equipment. A surge protector works by diverting excess voltage away from the devices it protects, allowing it to safely dissipate. This protection helps ensure that electronic equipment operates within safe voltage levels, thus extending its lifespan and preventing operational failures.

The other provided options refer to different functionalities that do not align with the primary role of a surge protector. Increasing voltage supply pertains more to devices like transformers, while converting AC to DC relates to rectifiers. Enhancing current stability involves equipment like voltage regulators or stabilizers, which do not specifically address surge protection.