Jännitteennieluri

Jännitteennieluri, often translated as voltage limiter or surge protector in English, is an electronic component or device designed to protect sensitive electronic equipment from overvoltage conditions. These overvoltages can be caused by external events like lightning strikes or power surges from the grid, or by internal transients generated by switching inductive loads. A jännitteennieluri functions by diverting excess voltage away from the protected circuitry, thereby preventing damage.

There are several types of jännitteennieluri, each with different operating principles and applications. Common examples include Metal Oxide Varistors (MOVs), Transient Voltage Suppressors (TVS diodes), and Gas Discharge Tubes (GDTs). MOVs are widely used due to their cost-effectiveness and ability to handle large surge currents. TVS diodes offer faster response times and precise clamping voltages, making them suitable for protecting delicate semiconductor devices. GDTs are often used for high-energy surge protection, particularly in telecommunications and power distribution systems.

The selection of a jännitteennieluri depends on the specific protection requirements, including the expected peak surge voltage, surge current, response time, and the voltage of the system being protected. Proper application of jännitteennieluri is crucial for ensuring the longevity and reliable operation of electronic devices.