公开(公告)号：EP0659037A2

公开(公告)日：1995-06-21

申请号：EP94308790.8

申请日：1994-11-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Minarczyk, Michael Martin ,  Nerone, Louis Robert ,  Oberle, Joseph C. ,  Ronald, Brian M. ,  Harsa, Clarence J. ,  Thomas, Edward John

IPC: H05B41/29

CPC classification number: H05B41/2856 ,  H01J61/56 ,  H05B41/285 ,  Y02B20/183 ,  Y02B20/185 ,  Y10S315/05

Abstract: A gas discharge lamp ballast with an indicator of operability of the ballast is disclosed. The ballast circuit comprises circuitry for providing a d.c. bus voltage on a bus conductor with respect to a ground, and a resonant load circuit. The resonant load circuit includes lamp terminals for connecting to a removable gas discharge lamp, a resonant inductor, and a resonant capacitor. The resonant inductor and resonant capacitor are selected to set a magnitude, and resonant frequency, of a bidirectional current in the lamp. Further included is a converter circuitry, including first and second serially connected switches coupled between the bus conductor and the ground, and providing to the resonant load circuit, at a node coupled between the first and second switches, a voltage that alternates between first and second voltage levels. Circuitry for generating first and second switch control signals for alternately switching into conduction the first and second switches, including circuitry responsive to a feedback signal representing a current in the resonant load circuit, are further included. The ballast circuit, moreover, includes overload detection circuitry for detecting if voltage applied to the lamp terminals exceeds an overload level; and circuitry for indicating, in response to such an overload condition being detected by the overload detection circuitry, probable operability of the ballast circuit.

Abstract translation: 灯镇流器电路包括用于总线导体上的直流母线电压供电的电路。 一个地面 谐振负载电路包括用于连接到可移除气体放电灯的灯端子，并且具有谐振电感器和谐振电容器，其被选择以设置灯中的双向电流的大小和谐振频率。 转换器电路包括耦合在总线导体和地之间的两个串联的开关，并且在耦合在开关之间的节点处向负载电路提供交流电压。 电路产生两个开关控制信号，以交替切换到导通开关，包括响应于来自谐振负载电路的反馈电流信号的电路。 过载检测电路检测到施加到灯端子的电压的正偏移和负偏移是否超过过载水平。 响应于检测到的过载条件来指示镇流器电路的可能的可操作性。 过载检测电路包括耦合以检测通过负载电路的电流的变压器绕组，以及相互耦合到第一绕组的第二变压器绕组，并且具有连接到地的中间抽头和耦合在第二绕组上的全波整流器。

公开(公告)号：EP0659037A3

公开(公告)日：1997-03-26

申请号：EP94308790.8

申请日：1994-11-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Minarczyk, Michael Martin ,  Nerone, Louis Robert ,  Oberle, Joseph C. ,  Ronald, Brian M. ,  Harsa, Clarence J. ,  Thomas, Edward John

IPC: H05B41/29

CPC classification number: H05B41/2856 ,  H01J61/56 ,  H05B41/285 ,  Y02B20/183 ,  Y02B20/185 ,  Y10S315/05

Abstract: A gas discharge lamp ballast with an indicator of operability of the ballast is disclosed. The ballast circuit comprises circuitry for providing a d.c. bus voltage on a bus conductor with respect to a ground, and a resonant load circuit. The resonant load circuit includes lamp terminals for connecting to a removable gas discharge lamp, a resonant inductor, and a resonant capacitor. The resonant inductor and resonant capacitor are selected to set a magnitude, and resonant frequency, of a bidirectional current in the lamp. Further included is a converter circuitry, including first and second serially connected switches coupled between the bus conductor and the ground, and providing to the resonant load circuit, at a node coupled between the first and second switches, a voltage that alternates between first and second voltage levels. Circuitry for generating first and second switch control signals for alternately switching into conduction the first and second switches, including circuitry responsive to a feedback signal representing a current in the resonant load circuit, are further included. The ballast circuit, moreover, includes overload detection circuitry for detecting if voltage applied to the lamp terminals exceeds an overload level; and circuitry for indicating, in response to such an overload condition being detected by the overload detection circuitry, probable operability of the ballast circuit.

公开(公告)号：EP0659037B1

公开(公告)日：2001-10-31

申请号：EP94308790.8

申请日：1994-11-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Minarczyk, Michael Martin ,  Nerone, Louis Robert ,  Oberle, Joseph C. ,  Ronald, Brian M. ,  Harsa, Clarence J. ,  Thomas, Edward John

IPC: H05B41/292

CPC classification number: H05B41/2856 ,  H01J61/56 ,  H05B41/285 ,  Y02B20/183 ,  Y02B20/185 ,  Y10S315/05

公开(公告)号：EP1122987A1

公开(公告)日：2001-08-08

申请号：EP01109069.3

申请日：1994-11-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Minarczyk, Michael Martin ,  Oberle, Joseph C. ,  Harsa, Clarence J. ,  Nerone, Louis Robert ,  Ronald, Brian M. ,  Thomas, Edward John

IPC: H05B41/285

CPC classification number: H05B41/2856 ,  H01J61/56 ,  H05B41/285 ,  Y02B20/183 ,  Y02B20/185 ,  Y10S315/05

Abstract: A gas discharge lamp ballast (10) circuit comprises circuitry for providing a d.c. bus voltage (V B ) on a bus conductor (16) with respect to a ground, and a resonant load circuit (18). The resonant load circuit includes lamp terminals for connecting to a removable gas discharge lamp, a resonant inductor (L R ), and a resonant capacitor (C R ). The resonant inductor and resonant capacitor are selected to set a magnitude, and resonant frequency, of a bidirectional current in the lamp. Further included is a converter circuitry, including first (S 1 )and second (S 2 ) serially connected switches coupled between the bus conductor and the ground, and providing to the resonant load circuit, at a node (12) coupled between the first and second switches, a voltage that alternates between first and second voltage levels. Circuitry (24,26) for generating first and second switch control signals for alternately switching into conduction the first and second switches, including circuitry responsive to a feedback signal representing a current in the resonant load circuit, are further included. The ballast circuit includes, a starter circuit arrangement (48) coupled to the converter circuit arrangement to generate a pulse to start conduction of one of said first and second switches. The starter pulse circuit arrangement includes an electric switch coupled between the d.c. bus conductor and ground to switch into a conducting state whenever the bus conductor is initially brought to a rated bus voltage. The electrical switch is a latch-type switch that remains conducting until such time as the bus voltage falls substantially towards the potential of ground.

Abstract translation: 气体放电灯镇流器（10）电路包括用于提供直流电压的电路。 总线导体（16）上相对于地的总线电压（VB）和谐振负载电路（18）。 谐振负载电路包括用于连接到可移除气体放电灯，谐振电感器（LR）和谐振电容器（CR）的灯端子。 选择谐振电感器和谐振电容器来设置灯中的双向电流的幅度和谐振频率。 还包括转换器电路，包括耦合在总线导体和地之间的第一（S1）和第二（S2）串联开关，以及在耦合在第一和第二开关之间的节点（12）处向谐振负载电路提供 ，在第一和第二电压电平之间交替的电压。 进一步包括用于产生第一和第二开关控制信号的电路（24,26），用于响应于表示谐振负载电路中的电流的反馈信号而交替地切换到导通第一和第二开关。 镇流器电路包括：耦合到转换器电路装置的起动器电路装置（48），以产生脉冲以开始所述第一和第二开关之一的导通。 起动脉冲电路装置包括一个电开关， 总线导体和地线，只要总线导体最初达到额定总线电压，就切换到导通状态。 电开关是一个闩锁型开关，直到母线电压基本上向地电位下降为止保持导通。