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公开(公告)号：EP0502273A2
公开(公告)日：1992-09-09
申请号：EP91306924.1
申请日：1991-07-29
发明人： Allen, Gary Robert , Davenport, John Martin , Allison, Joseph Michael , Hansler, Richard Lowell , King, Kenneth Steven
CPC分类号： H05B41/382 , H01J61/106 , H01J61/82 , H01J61/86 , H05B41/2928 , Y02B20/208 , Y10S315/07
摘要： Miniature high pressure arc lamps containing a substantial pressure of xenon, in addition to metal halide and mercury, can provide instant light at turn-on and are suitable for automotive headlamps. The xenon aggravates convection which causes arc-bowing and overheating of the envelope above the arc. By operating the lamps on unidirectional current upon which a frequency-modulated high frequency ripple has been imposed, acoustic resonance is used to straighten out the arc. The use of unidirectional current permits a reduction in cost and size of the ballast control circuits operated from auto storage battery. Frequency modulation of the ripple broadens the band allowing acoustic straightening of the arc. Additional control of the arc plus reduction of cataphoresis may be achieved through a horizontal magnetic field at the arc, transverse to current flow.
摘要翻译： 除了金属卤化物和汞之外，还含有大量氙气的微型高压电弧灯可以在开启时提供即时的光，适用于汽车前照灯。 氙气会加剧对流，导致弧线上方的弧形弯曲和过热。 通过在施加了调频高频纹波的单向电流上操作灯，使用声共振来矫直电弧。 使用单向电流允许降低从自动蓄电池操作的镇流器控制电路的成本和尺寸。 纹波的频率调制使得能够矫正电弧的频带变宽。 可以通过横向于电流的电弧处的水平磁场来实现对弧的额外控制以及电泳的减少。
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公开(公告)号：EP0502273B1
公开(公告)日：2001-10-31
申请号：EP91306924.1
申请日：1991-07-29
发明人： Allen, Gary Robert , Davenport, John Martin , Allison, Joseph Michael , Hansler, Richard Lowell , King, Kenneth Steven
IPC分类号： H01J61/82 , H01J61/86 , H05B41/288
CPC分类号： H05B41/382 , H01J61/106 , H01J61/82 , H01J61/86 , H05B41/2928 , Y02B20/208 , Y10S315/07
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3.发明公开
公开(公告)号：EP0768812A2
公开(公告)日：1997-04-16
申请号：EP96307386.1
申请日：1996-10-10
IPC分类号： H05B41/29
CPC分类号： H05B41/28
摘要： A high power factor electronic ballast for operating a high pressure gas discharge lamp comprises a boost converter function (32) and a buck function (34). The boost converter function and the buck function have common components (46). The combination boost-buck converter (30) reduces parts count, as compared to the parts count required for the separate boost and buck circuits of the prior art, by making some components of the single circuit act simultaneously in both the boost and buck functions. The rigid forcing of the ac input current waveform to follow the ac input voltage waveform is relaxed, to give performance priority to the buck function for the common components. Harmonics are allowed to enter the system in moderation in return for a less expensive and more reliable system that does not compromise lamp power control.
摘要翻译： 用于操作高压气体放电灯的高功率因数电子镇流器包括升压转换器功能（32）和降压功能（34）。 升压转换器功能和降压功能具有共同的组件（46）。 与现有技术的单独升压和降压电路所需的部件数相比，通过使单个电路的一些部件同时作用于升压和降压功能，组合升压降压转换器（30）减少了部件数量。 交流输入电流波形的刚性强制遵循交流输入电压波形是放松的，以便为公共部件的降压功能提供性能优先。 允许谐波被允许进入系统，作为不损害灯泡功率控制的更便宜和更可靠的系统的回报。
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公开(公告)号：EP0386990B1
公开(公告)日：1995-11-22
申请号：EP90302347.1
申请日：1990-03-06
发明人： Allen, Gary Robert , Allison, Joseph Michael , Davenport, John Martin , Hansler, Richard Lowell
IPC分类号： H05B41/29
CPC分类号： H05B41/2928 , Y02B20/208
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5.发明公开Gas discharge lamp ballast circuit with automatically calibrated light feedback control 失效镇流器用于与自动校准的光学反馈的放电灯。
公开(公告)号：EP0677983A3
公开(公告)日：1997-12-10
申请号：EP95301845.4
申请日：1995-03-20
IPC分类号： H05B41/392 , H05B41/38
CPC分类号： H05B41/3922
摘要： Disclosed is a ballast circuit for a high pressure gas discharge lamp, including a comparator circuit for producing a feedback error signal representing the difference between a feedback signal and a reference signal. The feedback signal is selectively one of a non-light feedback signal and a light feedback signal, as determined by a switching circuit. A power control circuit adjusts the level of power supplied to the lamp in response to the feedback error signal. A first, non-light feedback circuit supplies a non-light feedback signal to the comparator circuit, based on non-light information of the lamp that is fed back to the non-light feedback circuit. A light feedback circuit operative during a lamp warm-up period supplies a light feedback signal to the comparator circuit based on light intensity information that is fed back to the light feedback circuit. The light feedback circuit has an adjustable gain as determined by the difference between measured light intensity and magnitude of the light feedback signal produced. A calibration circuit, operative during steady state lamp operation when the comparator circuit is responsive to the non-light feedback signal, automatically adjusts the gain of the light feedback circuit until a state is reached in which switching to light feedback control would result in substantially no change in light intensity. The calibration circuit includes a calibration memory for storing the gain for use in a subsequent period of lamp warm-up.
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6.发明公开Gas discharge lamp ballast circuit with automatically calibrated light feedback control 失效镇流器用于与自动校准的光学反馈的放电灯。
公开(公告)号：EP0677983A2
公开(公告)日：1995-10-18
申请号：EP95301845.4
申请日：1995-03-20
IPC分类号： H05B41/392 , H05B41/38
CPC分类号： H05B41/3922
摘要： Disclosed is a ballast circuit for a high pressure gas discharge lamp, including a comparator circuit for producing a feedback error signal representing the difference between a feedback signal and a reference signal. The feedback signal is selectively one of a non-light feedback signal and a light feedback signal, as determined by a switching circuit. A power control circuit adjusts the level of power supplied to the lamp in response to the feedback error signal. A first, non-light feedback circuit supplies a non-light feedback signal to the comparator circuit, based on non-light information of the lamp that is fed back to the non-light feedback circuit. A light feedback circuit operative during a lamp warm-up period supplies a light feedback signal to the comparator circuit based on light intensity information that is fed back to the light feedback circuit. The light feedback circuit has an adjustable gain as determined by the difference between measured light intensity and magnitude of the light feedback signal produced. A calibration circuit, operative during steady state lamp operation when the comparator circuit is responsive to the non-light feedback signal, automatically adjusts the gain of the light feedback circuit until a state is reached in which switching to light feedback control would result in substantially no change in light intensity. The calibration circuit includes a calibration memory for storing the gain for use in a subsequent period of lamp warm-up.
摘要翻译： 该电路具有用于产生反馈误差信号（E）的第一比较器（14）做了darstellt参考信号（VR1）和反馈信号之间的差。 由逻辑电路（18）控制的开关（16）的状态下，确定性地雷如果反馈信号是非光（F1）或光（F2）的反馈。 反馈误差信号被馈送到一个功率控制电路（12）没有权力放电灯（10）。 非光反馈是由一个加法放大器（20）与来自反馈回路（22）和一个指定的输入（24），确实可以包括一个特殊的功率分布，随着时间的推移，的灯预热输入提供。 而灯处于动作中产生的光反馈。 的光电晶体管（26）感测灯的光（10A）和合成的电流通过在运算放大器（28）转换成电压。 甲DAC（30）产生的电流（F2“）被转换（34）的电压确实充当光源和反馈作为输入到第二比较器（38）。 计数器（32）校准灯通过调节DAC根据来自第二比较器的信号增益运算。
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公开(公告)号：EP0502273A3
公开(公告)日：1992-11-19
申请号：EP91306924.1
申请日：1991-07-29
发明人： Allen, Gary Robert , Davenport, John Martin , Allison, Joseph Michael , Hansler, Richard Lowell , King, Kenneth Steven
CPC分类号： H05B41/382 , H01J61/106 , H01J61/82 , H01J61/86 , H05B41/2928 , Y02B20/208 , Y10S315/07
摘要： Miniature high pressure arc lamps containing a substantial pressure of xenon, in addition to metal halide and mercury, can provide instant light at turn-on and are suitable for automotive headlamps. The xenon aggravates convection which causes arc-bowing and overheating of the envelope above the arc. By operating the lamps on unidirectional current upon which a frequency-modulated high frequency ripple has been imposed, acoustic resonance is used to straighten out the arc. The use of unidirectional current permits a reduction in cost and size of the ballast control circuits operated from auto storage battery. Frequency modulation of the ripple broadens the band allowing acoustic straightening of the arc. Additional control of the arc plus reduction of cataphoresis may be achieved through a horizontal magnetic field at the arc, transverse to current flow.
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公开(公告)号：EP0671869B1
公开(公告)日：1999-07-14
申请号：EP95300956.0
申请日：1995-02-15
CPC分类号： H05B41/2881 , H05B41/042 , H05B41/288 , H05B41/2882 , H05B41/2885 , H05B41/384 , Y02B20/202 , Y02B20/204 , Y02B20/206
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公开(公告)号：EP0768812A3
公开(公告)日：1998-04-01
申请号：EP96307386.1
申请日：1996-10-10
IPC分类号： H05B41/29
CPC分类号： H05B41/28
摘要： A high power factor electronic ballast for operating a high pressure gas discharge lamp comprises a boost converter function (32) and a buck function (34). The boost converter function and the buck function have common components (46). The combination boost-buck converter (30) reduces parts count, as compared to the parts count required for the separate boost and buck circuits of the prior art, by making some components of the single circuit act simultaneously in both the boost and buck functions. The rigid forcing of the ac input current waveform to follow the ac input voltage waveform is relaxed, to give performance priority to the buck function for the common components. Harmonics are allowed to enter the system in moderation in return for a less expensive and more reliable system that does not compromise lamp power control.
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公开(公告)号：EP0386990A3
公开(公告)日：1991-10-16
申请号：EP90302347.1
申请日：1990-03-06
发明人： Allen, Gary Robert , Allison, Joseph Michael , Davenport, John Martin , Hansler, Richard Lowell
IPC分类号： H05B41/29
CPC分类号： H05B41/2928 , Y02B20/208
摘要： A circuit arrangement for, and a method of, operating a high pressure discharge lamp are disclosed, especially such a lamp which contains a high xenon pressure along with a fill of mercury and a halide typically used for metal halide lamps. The high xenon pressure allows the xenon-metal halide lamp to obtain instantaneous light at a high intensity level which is particularly suited for automotive applications. The circuit related to the present invention provides for acoustic (high frequency) operation of the lamp which substantially eliminates known disadvantages of the high pressure xenon lamp of (1) severe arc bowing of such lamps having electrode spacing greater than two millimeters; (2) increased hot-spot temperatures of such lamps; (3) decreased cold-spot temperatures of said lamps and (4) reduced lamp efficiency and life respectively due to decreased cold spots and increased hot-spot temperatures. The circuit in a preferred embodiment incorporates frequency modulation to broaden the desired operational frequency band of the circuit along with straightening the arc between electrodes of the high-pressure xenon-metal halide lamp.
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