High pressure discharge lamp utilizing an unsaturated type discharge tube
    2.
    发明授权
    High pressure discharge lamp utilizing an unsaturated type discharge tube 失效
    高压放电灯采用不饱和型放电管

    公开(公告)号:US5142188A

    公开(公告)日:1992-08-25

    申请号:US685382

    申请日:1991-04-15

    IPC分类号: H01J61/82

    CPC分类号: H01J61/825

    摘要: Two series connected high pressure sodium arc discharge tubes include a saturated arc tube and an unsaturated arc tube. When the saturated arc tube voltage shifts in value due to changes in operating conditions, the other unsaturated arc tube voltage does not shift to compensate for the voltage increase. Because the unsaturated arc tube voltage does not shift, the rate of voltage shift of the saturated arc tube is smaller in magnitude than otherwise would occur if both arc tubes were saturated.

    摘要翻译: 两串连接的高压钠电弧放电管包括饱和电弧管和不饱和电弧管。 当饱和电弧管电压由于工作条件的变化而变化时,其他不饱和电弧管电压不会偏移以补偿电压增加。 由于不饱和电弧管电压不发生变化,所以饱和电弧管的电压偏移速率在两个电弧管都饱和的情况下的幅度较小。

    Glow starter holder with protection against R.F. overheating
    3.
    发明授权
    Glow starter holder with protection against R.F. overheating 失效
    发光保护器 过热

    公开(公告)号:US4910427A

    公开(公告)日:1990-03-20

    申请号:US290931

    申请日:1988-12-28

    CPC分类号: H01J61/54

    摘要: A discontinuous annular metallic holder for a glow starter in a high pressure discharge lamp. The holder has a hexagonal shape and encircles the bulb of the glow starter. One side is welded to one of the current-supply conductors extending from the lamp stem and two of the sides are parallel to the plane of the getters. The lower parallel side closest to the getter plane has an opening extending the length of the side to define an electrical discontinuity and to prevent a continuous circuit path within the lower side. The gap reduces the current induced in the lower side and resultant heating when the holder is subjected to an electromagnetic field during flashing of the getters. The reduced temperature of the lower side prevents damage to the glow starter.