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    Circuit for controlling a DCC converter in a power supply circuit for a discharge lamp of a motor vehicle headlight
    1.
    发明授权
    Circuit for controlling a DCC converter in a power supply circuit for a discharge lamp of a motor vehicle headlight 失效
    用于控制用于汽车前大灯的放电灯的电源电路中的DC / AC转换器的电路

    公开(公告)号：US5668712A

    公开(公告)日：1997-09-16

    申请号：US626183

    申请日：1996-03-29

    申请人： Bruno Cassese ,  Patrick Wacheux ,  Gilles Paul ,  Eric Herzberger ,  Jean-Marc Nicolai

    发明人： Bruno Cassese ,  Patrick Wacheux ,  Gilles Paul ,  Eric Herzberger ,  Jean-Marc Nicolai

    IPC分类号： H03K17/0412 ,  H03K17/691 ,  H05B41/282 ,  H05B41/288 ,  H03K17/687

    CPC分类号： H03K17/691 ,  H03K17/04123 ,  H05B41/2828 ,  H05B41/2888 ,  Y02B20/202

    摘要： A circuit for controlling a DC/AC converter of a power supply circuit for a motor vehicle headlight discharge lamp, the circuit comprising a primary circuit, voltage-feed means for feeding the primary circuit with voltage, and a secondary circuit coupled to the primary circuit by mutual induction, the secondary circuit delivering a voltage controlling the non-conductive and conductive state of a MOSFET type transistor of the DC/AC converter, the voltage that the power supply means deliver to the primary circuit constituting a modulated high frequency carrier voltage, the secondary circuit including means for converting the high frequency voltage delivered to the primary circuit into a control voltage for the transistor that is greater than or less than a given non-conductive or conductive threshold, as a function of the modulation of said high frequency voltage, the conversion means of the secondary circuit including a switch connected between the grid and the source of the transistor, said switch being open circuit while a high frequency voltage is being delivered to the primary circuit and short circuiting the grid and the source of said transistor when the said high frequency voltage disappears, said conversion means also including first capacitor means providing the control voltage to the switch, and second capacitor means which charge whenever the high frequency is being delivered to the primary circuit and which discharge into said first capacitor means when said high frequency voltage disappears, whereby said first capacitor means then keep said switch in the conductive condition.

    摘要翻译： 一种用于控制用于机动车辆大灯放电灯的电源电路的DC / AC转换器的电路，所述电路包括初级电路，用于向初级电路供电的电压馈送装置和耦合到初级电路的次级电路 通过相互感应，次级电路传送控制DC / AC转换器的MOSFET型晶体管的非导通和导通状态的电压，电源装置向构成调制的高频载波电压的一次电路传送的电压， 所述次级电路包括用于将输出到所述主电路的高频电压转换为所述晶体管的控制电压的装置，所述控制电压大于或小于给定的非导通或导通阈值，作为所述高频电压的调制的函数 ，二次电路的转换装置包括连接在电网和晶体管源极之间的开关， 所述开关是开路的，而当所述高频电压消失时，高频电压被传送到初级电路并使电网和源极短路，所述转换装置还包括第一电容器装置， 开关和第二电容器装置，其中当高频被输送到初级电路时充电，并且当所述高频电压消失时放电到所述第一电容器装置中，从而所述第一电容器装置将所述开关保持在导通状态。

    Voltage converter for the discharge lamp of a motor vehicle headlight, a power supply circuit, and a headlight including the circuit
    2.
    发明授权
    Voltage converter for the discharge lamp of a motor vehicle headlight, a power supply circuit, and a headlight including the circuit 失效
    用于汽车前大灯的放电灯的电压转换器，电源电路和包括该电路的头灯

    公开(公告)号：US5663875A

    公开(公告)日：1997-09-02

    申请号：US623402

    申请日：1996-03-28

    申请人： Bruno Cassese ,  Patrick Wacheux ,  Gilles Paul ,  Eric Herzberger ,  Jean-Marc Nicolai

    发明人： Bruno Cassese ,  Patrick Wacheux ,  Gilles Paul ,  Eric Herzberger ,  Jean-Marc Nicolai

    IPC分类号： B60Q1/04 ,  H01F38/08 ,  H02M3/28 ,  H05B41/282 ,  H05B41/288 ,  H05B41/38 ,  H02M7/44

    CPC分类号： H05B41/2882 ,  H05B41/388 ,  Y02B20/204

    摘要： A converter for powering a discharge lamp of a motor vehicle headlight, the converter comprising a primary circuit and a secondary circuit which includes two branches connected in parallel, each of which is coupled by mutual induction with the primary circuit, and two diodes connected in such a manner as to prevent either of the branches discharging into the other, the transformation ratio by mutual induction with the primary circuit of one of the two branches being greater than the transformation ratio of the other, the branch having the greater transformation ratio including a switch controlled by control electronics in such a manner as to be on whenever the voltage of the lamp is greater than a given threshold voltage, and to be off whenever said voltage becomes less than said threshold.

    摘要翻译： 一种用于为机动车辆前灯的放电灯供电的转换器，所述转换器包括初级电路和次级电路，所述初级电路和次级电路包括并联连接的两个分支，每个分支通过与所述主电路的互感耦合，并且以这种方式连接两个二极管 为了防止任何一个分支放电到另一个中，通过与两个分支中的一个分支的一次电路相互感应的变换比大于另一分支的一个电路的变换比，具有较大变换比的分支包括开关 由控制电子装置控制，以便每当灯的电压大于给定的阈值电压时，每当所述电压变得小于所述阈值时关闭。