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1.发明授权Ballast circuit for a gas discharge lamp having a cathode pre-heat arrangement 失效具有阴极预热布置的气体放电灯的镇流器电路
公开(公告)号：US5483125A
公开(公告)日：1996-01-09
申请号：US161844
申请日：1993-12-06
IPC分类号： H05B41/24 , H05B41/298 , H05B39/04
CPC分类号： H05B41/2988 , Y10S315/05
摘要： A ballast circuit for a gas discharge lamp, of the type having a pair of resistively heated cathodes that are resistively heated both during a cathode pre-heat period prior to lamp turn-on, and during steady state lamp operation, is disclosed. The ballast circuit includes circuitry for providing, on a bus conductor, a d.c. bus voltage with respect to a ground, and a converter, responsive to the d.c. bus voltage, for supplying bidirectional current to a resonant load circuit. The resonant load circuit includes the gas discharge lamp, a resonant capacitor coupled between the lamp cathodes such that its voltage varies with lamp voltage, and a resonant inductor serially coupled to the resonant capacitor and cooperating therewith to set a magnitude, and resonant frequency, of the bidirectional lamp current. Circuitry is provided for powering the resistively heated lamp cathodes, to thereby heat the cathodes. Further included is a circuit for maintaining the lamp voltage during a cathode pre-heat period below a predetermined level so as to prevent lamp turn-on during such period; such circuit includes circuitry for holding a first cathode of the lamp at a substantially constant voltage, and circuitry for clamping a second cathode of the lamp below the predetermined level. Such clamping circuitry includes a positive temperature coefficient (PTC) impedance device coupled to a second cathode of the lamp, and serially connected by a positively poled clamping diode to the bus conductor, and serially connected by a negatively poled clamping diode to the ground.
摘要翻译： 公开了一种用于气体放电灯的镇流器电路，其具有在灯开启之前的阴极预热期间以及稳态灯操作期间电阻加热的一对电阻加热的阴极。 镇流器电路包括用于在总线导体上提供直流电的电路。 相对于地面的总线电压，以及响应于直流的转换器。 总线电压，用于向谐振负载电路提供双向电流。 谐振负载电路包括气体放电灯，耦合在灯阴极之间的谐振电容器，使得其电压随灯电压变化，以及串联耦合到谐振电容器的谐振电感器，并与其配合以设定幅度和谐振频率 双向灯电流。 提供电路用于对电阻加热的灯阴极供电，从而加热阴极。 还包括一个电路，用于在阴极预热期间保持低于预定水平的灯电压，以防止在这样的时间段期间灯接通; 这种电路包括用于将灯的第一阴极保持在基本上恒定的电压的电路，以及将灯的第二阴极夹持在预定水平以下的电路。 这种钳位电路包括耦合到灯的第二阴极的正温度系数（PTC）阻抗器件，并且通过正极钳位二极管串联连接到总线导体，并且由负极化的钳位二极管串联连接到地。
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公开(公告)号：US5917289A
公开(公告)日：1999-06-29
申请号：US897345
申请日：1997-07-21
IPC分类号： H05B41/282 , H05B41/285 , H05B37/02
CPC分类号： H05B41/2856 , H05B41/2825 , Y10S315/05 , Y10S315/07
摘要： A ballast circuit for a gas discharge lamp comprises a resonant load circuit including the lamp. A d.c.-to-a.c. converter circuit induces an a.c. current in the resonant load circuit. The converter circuit comprises first and second switches serially connected between a bus conductor at a d.c. voltage and a reference conductor, and being connected together at a common node through which the a.c. load current flows. The first and second switches each comprise a reference node and a control node, the voltage between such nodes determining the conduction state of the associated switch. The respective reference nodes of the first and second switches are interconnected at the common node. The respective control nodes of the first and second switches are interconnected. An inductance is connected between the control nodes and the common node. A starting pulse-supplying capacitance is connected in series with the inductance, between the control nodes and the common node. A network is connected to the control nodes for supplying the starting pulse-supplying capacitance with charge so as to create a starting pulse during lamp starting, and for setting the voltage of the control nodes sufficiently close to that of the common node during steady state lamp operation so as to prevent the capacitance from supplying a starting pulse during the steady state lamp operation. A polarity-determining impedance is connected between the common node and one of the bus conductor and the reference conductor, to set the initial polarity of pulse to be generated by the starting pulse-supplying capacitor.
摘要翻译： 用于气体放电灯的镇流器电路包括包括灯的谐振负载电路。 一个d.c.到a.c。 转换器电路引起一个直流 谐振负载电路中的电流。 转换器电路包括串联连接在总线导体之间的第一和第二开关。 电压和参考导体，并且在公共节点处连接在一起，通过该通道 负载电流流动。 第一和第二开关各自包括参考节点和控制节点，这些节点之间的电压确定相关联的开关的导通状态。 第一和第二开关的相应参考节点在公共节点处相互连接。 第一和第二开关的相应控制节点相互连接。 电感连接在控制节点和公共节点之间。 启动脉冲供电电容与控制节点和公共节点之间的电感串联连接。 网络连接到控制节点，用于向起动脉冲供电电容提供电荷，以便在灯启动期间产生启动脉冲，并且在稳态灯期间将控制节点的电压设置得足够接近公共节点的电压 以便在稳态灯操作期间防止电容提供启动脉冲。 在公共节点和总线导体和参考导体中的一个之间连接极性确定阻抗，以设置由起动脉冲供电电容器产生的脉冲的初始极性。
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公开(公告)号：US06465972B1
公开(公告)日：2002-10-15
申请号：US09874588
申请日：2001-06-05
IPC分类号： H05B3702
CPC分类号： H05B41/2858
摘要： The present invention provides a lighting system powered by a system power source. The lighting system includes a ballast in operative connection with the system power source where the ballast is designed to generate a lamp input signal. A lamp input line is operatively connected to receive the lamp input signal. Further, a gas discharge lamp is in operative connection to the lamp input line configured to receive the lamp input signal. An amplitude modulation circuit is then placed in operative connection to the lamp input line, where the amplitude modulation circuit is configured to periodically modulate amplitudes of the lamp input signal prior to the lamp input signal being received by the gas discharge lamp. Operation of the amplitude modulation circuit results in a periodic amplitude modulation of the lamp input signal and eliminating visual striations otherwise occurring in the lamp.
摘要翻译： 本发明提供一种由系统电源供电的照明系统。 照明系统包括与系统电源操作连接的镇流器，其中镇流器被设计成产生灯输入信号。 灯输入线可操作地连接以接收灯输入信号。 此外，气体放电灯与配置为接收灯输入信号的灯输入线操作连接。 然后将幅度调制电路放置成与灯输入线的操作性连接，其中，幅度调制电路配置为在灯输入信号被气体放电灯接收之前周期性地调制灯输入信号的幅度。 幅度调制电路的操作导致灯输入信号的周期性幅度调制，并消除灯中另外发生的视线条纹。
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4.发明授权Power factor correction circuit with faster bus charging rate during startup 失效功率因数校正电路，启动时总线充电速度更快公开(公告)号：US06621238B2
公开(公告)日：2003-09-16
申请号：US09683619
申请日：2002-01-25
IPC分类号： G05F100
CPC分类号： H02M1/4225 , H02M1/36 , H05B41/28 , Y02B70/126
摘要： A ballast circuit including a power factor correction circuit with an alterable d.c. bus charging rate is provided. The power factor correction circuit selectively alters the d.c. bus charging rate such that, during a startup period for the ballast circuit, the charging rate is faster than during a steady-state period. The ballast circuit including a bridge rectifier, a power factor correction circuit, a bus capacitor, and at least one inverter. The power factor correction circuit including a power factor controller, a semiconductor switch operationally coupled to an output signal of the power factor controller, a selectively alterable impedance network operationally coupled to an output of the semiconductor switch and operationally coupled to an input signal of the power factor controller, and an impedance network control circuit operationally coupled to the impedance network to selectively alter the impedance network.
摘要翻译： 一种镇流器电路，包括具有可变直流电源的功率因数校正电路。 提供总线充电率。 功率因数校正电路选择性地改变直流 总线充电率使得在镇流器电路的启动期间，充电速率比稳态期间快。 镇流器电路包括桥式整流器，功率因数校正电路，总线电容器和至少一个逆变器。 所述功率因数校正电路包括功率因数控制器，可操作地耦合到所述功率因数控制器的输出信号的半导体开关，可操作地耦合到所述半导体开关的输出并且可操作地耦合到所述功率的输入信号的选择性可变阻抗网络 因子控制器和阻抗网络控制电路，其可操作地耦合到阻抗网络以选择性地改变阻抗网络。
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5.发明授权Compact lamp circuit structure having an inverter/boaster combination that shares the use of a first n-channel MOSFET of substantially lower on resistance than its p-channel counterpart 失效紧凑型灯电路结构具有逆变器/自动组合，其共享使用比其p沟道对方更低导通电阻的第一n沟道MOSFET
公开(公告)号：US5914570A
公开(公告)日：1999-06-22
申请号：US922203
申请日：1997-09-02
CPC分类号： H05B41/28
摘要： A gas discharge lamp ballast comprises a load circuit including circuitry for connection to a gas discharge lamp. A circuit supplies d.c. power from an a.c. voltage. A d.c.-to-a.c. converter circuit is coupled to the load circuit for inducing a.c. current therein. The converter circuit comprises first and second converter switches serially connected in the foregoing order between a bus node at a d.c. voltage and a reference node, and being connected together at a common node through which the a.c. load current flows. The first and second converter switches each have a control node and a reference node, the voltage between such nodes determining the conduction state of the associated switch. The respective control nodes of the first and second converter switches are interconnected. The respective reference nodes of the first and second converter switches are connected together at the common node. A boost converter comprises a boost capacitor connected between the bus and reference nodes and whose level of charge determines the bus voltage on the bus conductor. A boost inductor stores energy from the circuit that supplies d.c. power, the boost inductor being connected by at least one diode to the boost capacitor, for discharging its energy into the boost capacitor. A boost switch periodically connects the boost inductor through a low impedance path to the bus node to thereby charge the boost inductor. The boost switch comprises the first switch of the converter circuit. The ballast achieves a high degree of power factor correction.
摘要翻译： 气体放电灯镇流器包括负载电路，其包括用于连接到气体放电灯的电路。 电路提供直流 来自a.c.的权力 电压。 一个d.c.到a.c。 转换器电路耦合到负载电路，用于诱发电流。 电流。 转换器电路包括按照上述顺序在总线节点之间以直流方式串联连接的第一和第二转换器开关。 电压和参考节点，并且在公共节点处连接在一起，通过该节点，交流电源 负载电流流动。 第一和第二转换器开关各自具有控制节点和参考节点，这些节点之间的电压确定相关联的开关的导通状态。 第一和第二转换器开关的相应控制节点相互连接。 第一和第二转换器开关的相应参考节点在公共节点处连接在一起。 升压转换器包括连接在总线和参考节点之间的升压电容器，其电荷电平决定总线导体上的总线电压。 升压电感器存储供应直流电路的电路的能量。 电源，升压电感器由至少一个二极管连接到升压电容器，用于将其能量释放到升压电容器中。 升压开关通过低阻抗路径周期性地将升压电感连接到总线节点，从而为升压电感器充电。 升压开关包括转换器电路的第一开关。 镇流器实现了高度的功率因数校正。
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公开(公告)号：US5357173A
公开(公告)日：1994-10-18
申请号：US971806
申请日：1992-11-05
IPC分类号： H05B41/231 , H05B41/24 , H05B41/292 , H05B37/02
CPC分类号： H05B41/2928 , Y02B20/208 , Y10S315/07
摘要： Circuits, and methods of using same, are disclosed for pulse operating a sodium vapor lamp and, in response to gating pulses applied to a resonant ballast, the lamp ignites to develop a quasi-resonant bidirectional current waveform through the lamp, the shape of which is controlled to suppress the excitation of acoustic resonant nodes in the lamp. The quasi-resonant bidirectional current waveform oscillates at a prescribed frequency and contains a first group of harmonics, the harmonic content of which is outside any acoustic frequency region associated with the lamp, and further contains a second group of harmonics having a harmonic content which coincides with such acoustic frequency region. The current waveform is caused to decay substantially at the time of ignition of the lamp to quickly reduce the magnitude of the second group of harmonics to thereby suppress excitation of the acoustic frequency region and prevent arc instability in the lamp.
摘要翻译： 公开了电路及其使用方法，用于脉冲操作钠蒸汽灯，并且响应于施加到谐振镇流器的选通脉冲，灯点燃以产生通过灯的准谐振双向电流波形，其形状 被控制以抑制灯中的声谐振节点的激发。 准谐振双向电流波形以规定频率振荡，并且包含第一组谐波，其谐波含量在与灯相关的任何声频区域之外，并且还包含第二组谐波，其具有与谐振含量一致的第二组谐波 具有这样的声频区域。 导致电流波形在灯点火时基本上衰减，以快速地减小第二组谐波的大小，从而抑制声频区域的激发并防止灯中的电弧不稳定。
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公开(公告)号：US07102298B2
公开(公告)日：2006-09-05
申请号：US10212358
申请日：2002-08-05
IPC分类号： G05G1/00
CPC分类号： H05B41/02
摘要： An integrated lamp/lamp electronics unit includes a lamp having a first end with first end electrical terminals, and a second end with second end electrical terminals. An end cap having an interior section is placed into electrical connection with the first end electrical terminals at the first end of the lamp. Lamp electronics are configured to control operation of the lamp and are connected only to the second end electrical terminals. The lamp electronics are carried on a circuit board having a configuration substantially matching the second end of the lamp portion. The circuit board is placed within the interior of a lamp electronics end cap, and the end cap is attached in a permanent relationship to the second end of the lamp.
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公开(公告)号：US5719472A
公开(公告)日：1998-02-17
申请号：US648232
申请日：1996-05-13
IPC分类号： H05B41/24 , H05B41/282 , H05B37/02
CPC分类号： H05B41/2828 , Y02B20/186 , Y10S315/05 , Y10S315/07
摘要： A ballast circuit for a gas discharge lamp includes a resonant load circuit incorporating a gas discharge lamp and including first and second resonant impedances whose values determine the operating frequency of the resonant load circuit. Further included is a d.c.-to-a.c. converter circuit coupled to the resonant load circuit so as to induce an a.c. current in the resonant load circuit. The converter includes first and second switches serially connected between a bus conductor at a d.c. voltage and ground, and has a common node through which the a.c. load current flows. A feedback circuit provides a feedback signal indicating the level of current in the resonant load circuit. A high voltage IC drives the first and second switches at a frequency determined by a timing signal which predominantly comprises the feedback signal during lamp ignition, whereby during lamp ignition the feedback signal causes the high voltage IC to drive the first and second switches towards a switching frequency which promotes resonant operation of the resonant load circuit.
摘要翻译： 用于气体放电灯的镇流器电路包括具有气体放电灯并包括第一和第二谐振阻抗的谐振负载电路，其值确定谐振负载电路的工作频率。 进一步的包括一个d.c.到a.c。 转换器电路耦合到谐振负载电路，以便引起一个直流。 谐振负载电路中的电流。 该转换器包括串联连接在直流电的总线导体之间的第一和第二开关。 电压和接地，并具有一个公共节点，通过该节点。 负载电流流动。 反馈电路提供指示谐振负载电路中的电流电平的反馈信号。 高电压IC以由灯点亮期间主要包括反馈信号的定时信号确定的频率驱动第一和第二开关，由此在点灯期间，反馈信号使高电压IC驱动第一和第二开关朝向开关 促进谐振负载电路的谐振操作的频率。
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9.发明授权High-pressure sodium lamp control circuit providing constant peak current and color 失效高压钠灯控制电路提供恒定的峰值电流和颜色
公开(公告)号：US5367228A
公开(公告)日：1994-11-22
申请号：US972036
申请日：1992-11-05
IPC分类号： H05B41/16 , H05B41/231 , H05B41/288 , G05F1/00
CPC分类号： H05B41/2883 , H05B41/2882 , Y10S315/07
摘要： The present invention is directed to a control circuit for providing a substantially constant current to a high-pressure sodium lamp. The control circuit preferably comprises a circuit for providing a rectified voltage signal, and a ballast having first and second contacts to operatively connect the lamp therebetween. The ballast generates and controls a peak current through the lamp based on the value of a controlled voltage. The control circuit further comprises a current sensor to sense the amount of current through the lamp, and a buck-boost voltage control circuit to control the value of the controlled voltage in order to provide a substantially constant peak current through the lamp based on the amount of current sensed by the current sensor. By controlling the amount of voltage seen by the lamp, the buck-boost voltage control circuit controls the amount of current through the lamp, thereby providing constant color temperature regardless of the fluctuations in lamp impedance.
摘要翻译： 本发明涉及一种用于向高压钠灯提供基本恒定电流的控制电路。 控制电路优选地包括用于提供整流电压信号的电路，以及具有第一和第二触点的镇流器，以在其间操作地连接灯。 镇流器基于受控电压的值产生并控制通过灯的峰值电流。 控制电路还包括用于感测通过灯的电流量的电流传感器，以及降压 - 升压电压控制电路，用于控制受控电压的值，以便基于所述量提供基本恒定的通过灯的峰值电流 的电流由电流传感器感测。 通过控制灯所看到的电压量，降压 - 升压电压控制电路控制通过灯的电流量，从而提供恒定的色温，而与灯阻抗的波动无关。
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公开(公告)号：US6150769A
公开(公告)日：2000-11-21
申请号：US239648
申请日：1999-01-29
IPC分类号： H05B41/282 , H05B37/02
CPC分类号： H05B41/2825
摘要： A ballast circuit for a gas discharge lamp with a tapless feedback circuit is disclosed. The ballast circuit comprises a d.c.-to-a.c. converter circuit with circuitry for coupling to a resonant load circuit, for inducing a.c. current therein. The converter circuit comprises a pair of switches serially connected between a bus conductor at a d.c. voltage and a reference conductor. The voltage between a reference node and a control node of each switch determines the conduction state of the associated switch. The respective reference nodes of the switches are connected together at a common node through which the a.c. current flows, and the respective control nodes of the switches are connected together. A gate drive arrangement regeneratively controls the first and second switches. It comprises a coupling circuit including an inductor for coupling to the control nodes a feedback signal representing current in the load circuit. It further comprises a tapless feedback circuit for providing the feedback signal. The feedback circuit comprises a capacitor coupled at one end to the common node in such manner as to conduct load current, and coupled at another end to the inductor.
摘要翻译： 公开了一种具有无抽头反馈电路的气体放电灯的镇流器电路。 镇流器电路包括直流到a.c。 转换器电路，其具有用于耦合到谐振负载电路的电路，用于诱导电流。 电流。 转换器电路包括串联连接在总线导体之间的一对开关。 电压和参考导体。 每个开关的参考节点和控制节点之间的电压决定了相关开关的导通状态。 交换机的各个参考节点在公共节点连接在一起，通过该节点 电流流动，开关的各个控制节点连接在一起。 栅极驱动装置再生地控制第一和第二开关。 它包括耦合电路，该耦合电路包括用于耦合到控制节点的电感器，该反馈信号表示负载电路中的电流。 它还包括用于提供反馈信号的无抽头反馈电路。 反馈电路包括以一端耦合到公共节点的电容器，以便传导负载电流，并在另一端耦合到电感器。
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