Protection device in a hid lamp ignition circuit
    12.
    发明授权
    Protection device in a hid lamp ignition circuit 失效
    保护装置在隐藏灯点火电路中

    公开(公告)号:US06294880B1

    公开(公告)日:2001-09-25

    申请号:US09483599

    申请日:2000-01-14

    IPC分类号: H05B3702

    CPC分类号: H05B41/042

    摘要: A circuit arrangement for igniting and operating a high-pressure discharge lamp includes input terminals for the connection of a supply source and output terminals for the connection of the lamp. A switching circuit operates the lamp at a nominal lamp voltage Vla during stable lamp operation and generates an open circuit voltage Vo at the output terminals before the lamp is ignited. A control circuit for controlling the switching circuit is provided with a device BM for limiting the voltage at the output terminals. A transition detection circuit M detects the transition from a glow discharge to an arc discharge.

    摘要翻译: 用于点燃和操作高压放电灯的电路装置包括用于连接供电源的输入端和用于连接灯的输出端。 在稳定的灯操作期间,开关电路以标称灯电压Vla操作灯,并且在灯点燃之前在输出端产生开路电压Vo。 用于控制开关电路的控制电路设置有用于限制输出端子处的电压的装置BM。 转移检测电路M检测从辉光放电到电弧放电的转变。

    Discharge lamp igniting and operating curcuit having interference signal
suppression from 9 KHz to 100 MHz
    13.
    发明授权
    Discharge lamp igniting and operating curcuit having interference signal suppression from 9 KHz to 100 MHz 失效
    放电灯点亮和操作具有9 KHz至100 MHz干扰信号抑制的电路

    公开(公告)号:US5834902A

    公开(公告)日:1998-11-10

    申请号:US815241

    申请日:1997-03-12

    CPC分类号: H05B41/28 H05B41/292

    摘要: A circuit arrangement for igniting and operating a discharge lamp is provided with input terminals for connecting a supply source, and a ground terminal, differential-mode and common-mode filters in which inductance and capacitance are incorporated, output terminals for connecting the discharge lamp, and a switch mode power supply connected to the input terminals and the output terminals by respective voltage conduction branches. The circuit arrangement is characterized in that the input terminals and output terminals are connected both to one another and to the ground terminal by respective capacitive filters, in that a bead is included in one of the voltage conduction branches, and in that further common-mode capacitance is present between the inductance and the switch mode power supply. The requirements formulated in both EN55022 and EN55015 can be complied with in this manner.

    摘要翻译: 用于点燃和操作放电灯的电路装置设置有用于连接供电源的输入端子,并入电感和电容的接地端子,差分模式和共模滤波器,用于连接放电灯的输出端子, 以及通过各自的电压传导分支连接到输入端子和输出端子的开关模式电源。 电路装置的特征在于,输入端子和输出端子通过相应的电容滤波器彼此连接并且连接到接地端子,因为在一个电压传导分支中包括磁珠,并且在另一个共模 在电感和开关模式电源之间存在电容。 EN55022和EN55015中规定的要求可以按照这种方式进行。