气体放电管是一种在金属电极和金属化陶瓷的空间里,充入一定比例的惰性气体或与其它混合气体等放电介质,经过高温封接而成单间隙或多间隙的开关型防护器件。当被保护的电路或设备受到浪涌冲击时,放电管将从高阻抗状态变为低阻抗状态释放浪涌能量到地,降低电路残压,进而保护设备电路或人身免受瞬态过电压的危害。
A gas discharge tube Is a single-gap or multi-gap switch type protective device In a space enclosed by metal electrodes and metallized ceramics, discharge media such as inert gas or gas mixture are filled at different atmospheric pressures to form single-gap or multi-gap switch-type protective devices. They have high insulation resistance plus low capacitance and leakage to ensure minimal effect on normal operation of equipment.