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    Electronic ballast having open circuit in output
    2.
    发明申请
    Electronic ballast having open circuit in output 失效
    电子镇流器在输出端有开路

    公开(公告)号：US20030146716A1

    公开(公告)日：2003-08-07

    申请号：US10066059

    申请日：2002-02-01

    申请人： Energy Savings, Inc.

    发明人： Kent E. Crouse ,  Gueorgui L. Grouev ,  William L. Keith ,  Jacek Cachel

    IPC分类号： H05B037/02

    CPC分类号： H05B41/2851

    摘要： Gas discharge lamps may conduct current from the common rail to earthen ground through a fixture containing the lamps. A transistor is coupled in series in the current path to the common rail. When the ballast is placed in a quiescent state, the transistor is rendered non-conducting, thereby solating the lamps from the common rail and preventing flicker. In accordance with another aspect of the invention, the control electrode of the transistor is coupled to a source of low voltage and the transistor is rendered non-conducting when the source of low voltage is turned off. The lamps can also be isolated from the common rail by using a semiconductor switch in the rectifier section or by referencing the output of the inverter to the high voltage rail.

    摘要翻译： 气体放电灯可以通过包含灯的固定装置将电流从共轨传导到土地。 晶体管在共轨的电流路径中串联耦合。 当镇流器处于静止状态时，晶体管变得不导通，从而从共轨引导灯并防止闪烁。 根据本发明的另一方面，晶体管的控制电极耦合到低电压源，并且当低电压源关闭时，晶体管变为不导通。 灯也可以通过在整流器部分中使用半导体开关或通过将逆变器的输出引用到高压轨道而与共轨隔离。