公开(公告)号：US3912965A

公开(公告)日：1975-10-14

申请号：US43876674

申请日：1974-02-01

申请人： YAMADA NAOYA ,  NAGAI NOBUO ,  TADA SHOJI

发明人： YAMADA NAOYA ,  NAGAI NOBUO ,  TADA SHOJI

IPC分类号： H01T1/04 ,  H01J1/44 ,  H01J17/04 ,  H01J17/34

CPC分类号： H01T1/04

摘要： A spark gap device for a lightning arrester comprising a first spark gap having a uniform electric field characteristic and a second spark gap connected in parallel with the first spark gap and having a nonuniform electric field characteristic. The spark gaps are disposed in a hermetically sealed housing having an electrically negative gas disposed therein. The resultant spark gap device has a substantially constant sparkover voltage charactetistic since a discharge due to a lightning surge voltage always takes place first across the first spark gap and a discharge due to a low frequency voltage always takes place first across the second spark gap.