jännitevaimentimet

Jännitevaimentimet, also known as voltage limiters or surge protectors, are electronic devices designed to protect electrical equipment from damage caused by voltage spikes or surges. These surges can occur due to various reasons, including lightning strikes, power outages and restorations, or switching operations within the power grid.

The primary function of a jännitevaimennin is to divert excess voltage away from sensitive electronics. They typically achieve this by incorporating components that have a high resistance under normal operating voltages but a very low resistance when subjected to a sudden voltage increase. This low resistance path allows the excess energy to be safely shunted to ground, preventing it from reaching the connected device.

Common types of voltage-limiting components include Metal Oxide Varistors (MOVs) and Transient Voltage Suppressors (TVS diodes). MOVs are widely used due to their cost-effectiveness and ability to absorb significant amounts of energy. TVS diodes offer faster response times and are often employed in applications requiring precise protection.

Jännitevaimentimet are essential for safeguarding a wide range of electronic devices, from household appliances and personal computers to industrial machinery and telecommunication equipment. By absorbing or diverting transient overvoltages, they help extend the lifespan of equipment and prevent costly repairs or replacements. Their integration into power strips, surge protectors, and even as internal components within devices underscores their importance in modern electrical systems.