公开(公告)号：US6008594A

公开(公告)日：1999-12-28

申请号：US116248

申请日：1998-07-16

申请人： Masahide Kita ,  Kenji Nakamura ,  Masahiro Yabuta

发明人： Masahide Kita ,  Kenji Nakamura ,  Masahiro Yabuta

IPC分类号： F21S8/10 ,  F21V19/00 ,  H01R33/96 ,  H05B41/24 ,  H05B41/282 ,  H05B41/288 ,  H05B41/292 ,  H05B37/02

CPC分类号： H05B41/2885 ,  H01R33/96 ,  H05B41/2925 ,  Y02B20/208 ,  Y10S315/07

摘要： A discharge lamp lighting controller that detects the voltage applied to a discharge lamp used by a vehicle, for example, and stops power supply to the discharge lamp if the voltage goes out of an estimated rated voltage range in a design stage. Circuit components are protected from possible impairment due to excessive current that may flow depending on the state of the discharge lamp under the constant power control of the discharge lamp.

摘要翻译： 一种放电灯点亮控制器，其例如在设计阶段中检测施加到车辆使用的放电灯的电压，并且如果电压超过估计的额定电压范围，则停止对放电灯的电力供应。 保护电路元件免受由于在放电灯的恒定功率控制下的放电灯状态可能流过的过大电流而引起的可能的损害。

公开(公告)号：US6046551A

公开(公告)日：2000-04-04

申请号：US195538

申请日：1998-11-19

申请人： Masahide Kita

发明人： Masahide Kita

IPC分类号： H02M7/537 ,  H02M7/5387 ,  H05B41/16 ,  H05B41/24 ,  H05B41/282 ,  H05B41/288 ,  H05B41/292 ,  H05B41/38 ,  H05B37/02

CPC分类号： H05B41/2926 ,  H05B41/2883 ,  H05B41/2885 ,  H05B41/2888 ,  H05B41/382 ,  H02M2001/007 ,  Y02B20/202

摘要： A discharge lamp lighting control device comprises an H-bridge circuit connected between the secondary coil of a transformer and a discharge lamp and provided with a first pair of transistors and a second pair of transistors, capable of converting a DC voltage produced from an AC voltage that appears at the secondary coil of the transformer into an AC voltage whose polarity is changed at predetermined intervals so as to apply the AC voltage to the discharge lamp. The first pair of transistors have withstand voltage characteristic superior to that of the second pair of transistors. The on-state resistances of the four transistors of the first and second pairs can be equal to each other so that the difference between the on-state resistances may be ignored. A control unit turns on only the first pair of transistors when applying a high voltage to the discharge lamp to cause a discharge to pass through the gas contained in the discharge lamp. The control unit can estimate an on-state resistance of the first and second pair of transistors and also predict an AC voltage actually applied to the discharge lamp from the estimated on-state resistance to control a voltage applied to the primary coil of the transformer so that a predetermined power is supplied to the discharge lamp.

摘要翻译： 放电灯点亮控制装置包括连接在变压器的次级线圈和放电灯之间并具有第一对晶体管和第二对晶体管的H桥电路，能够转换从AC电压产生的DC电压 其出现在变压器的次级线圈处，其交流电压的极性以预定间隔改变，以将AC电压施加到放电灯。 第一对晶体管具有优于第二对晶体管的耐受电压特性。 第一对和第二对的四个晶体管的导通电阻可以彼此相等，使得导通状态电阻之间的差可以被忽略。 当向放电灯施加高电压时，控制单元仅接通第一对晶体管，以使放电通过放电灯中所含的气体。 控制单元可以估计第一和第二对晶体管的通态电阻，并且还从估计的导通状态电阻预测实际施加到放电灯的AC电压以控制施加到变压器的初级线圈的电压，因此 向放电灯提供预定功率。