Knowledge of ceramic gas discharge tube

Surge current, current can be from a few thousand to tens or even hundreds of thousands of Ann Ann;
Good insulation;
Wide voltage range, from a few dozen volts to hundreds of volts or even thousands of volts;
The interelectrode capacitance is less than 1Pf. Introduction: the ceramic gas discharge tube is a switching element, generally divided into two or three levels structure, between the plates filled with inert gas, when the voltage is large enough, between the plates discharge breakdown of inert gas in the tube conduction state, which will be in the loop current into the earth, and the other period the parallel protection. When the circuit over-voltage disappears, the discharge in the tube disappears immediately, and then returns to the high impedance state. Applications: Cable TV, railway communications, security, communications equipment, lightning protection devices, HID, power supply, etc..