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    • 22. 发明授权
    • Starting switch circuit for a fluorescent lamp
    • 荧光灯启动开关电路
    • US6137241A
    • 2000-10-24
    • US903893
    • 1997-07-31
    • Masayoshi Gyoten
    • Masayoshi Gyoten
    • H05B41/18H05B41/04H02M1/12
    • H05B41/046
    • The present invention provides for a starting switch circuit which is generally applicable to ballasts and fluorescent lamps having different normal rated power from each other. A starting switch circuit includes a serially-connected circuit having a first rectifier circuit, a semiconductor switching element including a control terminal, and a first resistor circuit for detecting a current flowing to the semiconductor switching element, all connected in series; a first timer circuit, connected in parallel to a series circuit of the semiconductor switching element and the first resistor circuit, for switching the semiconductor switching element to OFF state after the semiconductor switching element is in ON state for a predetermined period of time; and a control circuit for controlling the semiconductor switching element.
    • 本发明提供一种启动开关电路,其通常可应用于彼此具有不同正常额定功率的镇流器和荧光灯。 起动开关电路包括具有第一整流器电路的串联电路,包括控制端子的半导体开关元件和用于检测流向半导体开关元件的电流的第一电阻器电路,其全部串联连接; 第一定时器电路,并联连接到半导体开关元件和第一电阻器电路的串联电路,用于在半导体开关元件处于导通状态一段预定时间之后将半导体开关元件切换到截止状态; 以及用于控制半导体开关元件的控制电路。