SA is a device to protect electrical equipment from over voltage transients caused by external (lightning) or internal (switching) events.
Concept behind Protection - Shunting
The goal of these devices is to protect the end product by shunting energy away. When the protection devices turn on, their impedance are reduced substantially. The circuit becomes current divider with most current going through the protection device.
Major Categories of RF Surge Protection Devices
1. Circuit Protection Components
Most common method of shunting transient energy is through circuit protection components such as Gas Tubes.
2. Filtering Components
Major method of shunting transient energy is through filter components such as inductors and capacitors.
Filter based RF SA's would have inductors and capacitors designed to handle kiloamp levels of surge.
To know on what principle these RF Surge Arrestor please click here.Basic Principle for RF Surge Arrestor
No comments:
Post a Comment