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    • 1. 发明授权
    • High pressure discharge lamp apparatus
    • 高压放电灯装置
    • US4378513A
    • 1983-03-29
    • US268116
    • 1981-05-28
    • Nobuhisa YoshikawaShigeru HoriiKazutaka Koyama
    • Nobuhisa YoshikawaShigeru HoriiKazutaka Koyama
    • H05B41/14H05B41/231H05B37/00
    • H05B41/231Y10S315/07
    • A high pressure discharge lamp apparatus comprises:a discharge tube and a current limiting device such as a choke coil connected in series for connection across an A.C. power source, anda pulse generator connected by its output terminal in parallel to the discharge tube,the apparatus is characterized in that:said pulse generator impresses reignition pulses on said discharge tube at least during a period defined as from a zero-cross point of the source voltage of the power source to a phase defined by a peak of reignition voltage of lamp voltage waveform when no reignition pulse is impressed on the discharge tube, thereby retaining lamp current of the discharge tube without forming zero-current period,thereby the lamp is stably lit with such a high lamp voltage as is almost equal to the power source voltage and the power of reignition pulse can be saved without harming stability of lighting. Thus a stable lighting of the high pressure discharge lamp with a a high power efficiency becomes possible.
    • 高压放电灯装置包括:放电管和串联连接的扼流线圈的限流装置,用于连接交流电源;以及脉冲发生器,其与其放电管并联连接的脉冲发生器,该装置 其特征在于:所述脉冲发生器至少在从电源的源极电压的零交叉点定义为由灯电压波形的重新点火电压峰值定义的相位期间内,使所述放电管上的重新点火脉冲 当在放电管上没有施加重新点火脉冲时,由此保持放电管的灯电流,而不会形成零电流周期,从而灯以稳定的方式点亮,灯电压几乎等于电源电压和功率 的重燃脉冲可以节省而不损害照明的稳定性。 因此,具有高功率效率的高压放电灯的稳定照明成为可能。