Analyzing The Core Working Mechanism Of Surge Protector

The surge protective device is an indispensable device for lightning protection of electronic equipment, formerly known as a "lightning arrester" or "surge protector," abbreviated as SPD.

The surge protector function is to limit transient overvoltages entering power lines and signal transmission lines to within the voltage range the equipment or system can withstand, or to divert strong lightning currents to ground, protecting the protected equipment or system from damage.

The type and structure of the surge protection device vary depending on the application, but it must at least include a nonlinear voltage limiting element. Its basic components include a discharge gap, a gas-filled discharge tube, a varistor, a suppressor diode, and a choke coil.