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公开(公告)号：US5747941A
公开(公告)日：1998-05-05
申请号：US568623
申请日：1995-12-07
IPC分类号： H05B41/298 , H05B37/02
CPC分类号： H05B41/2985 , Y10S315/05
摘要： An electronic ballast includes an inverter producing pulses having a DC component, an output circuit connecting the filaments of one or more lamps in series, and a control circuit for detecting direct current through the filaments. The control circuit includes a capacitor charged by the DC component. When the voltage on the capacitor reaches a predetermined value, the ballast applies a high voltage to the lamps. The predetermined value is not reached unless a direct current passes from the output of the inverter through all lamp filaments to the capacitor. If a lamp filament is not intact, the inverter will not apply high voltage to the lamp.
摘要翻译： 电子镇流器包括产生具有DC分量的脉冲的逆变器，串联连接一个或多个灯的灯丝的输出电路和用于检测通过灯丝的直流电的控制电路。 控制电路包括由DC分量充电的电容器。 当电容器上的电压达到预定值时，镇流器对灯施加高电压。 除非直流电流从逆变器的输出通过所有灯丝到电容器，否则不能达到预定值。 如果灯丝不完整，变频器将不会对灯施加高电压。
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公开(公告)号：US5539281A
公开(公告)日：1996-07-23
申请号：US376774
申请日：1995-01-23
IPC分类号： H05B41/282 , H02M3/155 , H02M7/217 , H05B41/285 , H05B41/392 , H05B37/02
CPC分类号： H05B41/2853 , H05B41/3925 , Y10S315/04 , Y10S315/07
摘要： An electronic ballast includes a converter coupled to a variable frequency inverter and a series resonant, parallel loaded output coupled to the inverter. The frequency of the inverter increases when the supply voltage from the converter decreases. The converter includes a full wave rectifier producing a first voltage and an unregulated boost circuit producing a second voltage which is combined with the first voltage to produce the supply voltage. The amount of boost, and therefore the magnitude of the supply voltage, is varied to provide dimming. Dimming is controlled mechanically, via a potentiometer, or electrically, via a control input. Dimming also occurs in response to changes in the first voltage, i.e. from changes in the voltage on an AC power line or from changes in the voltage provided by a capacitive dimmer coupled between the ballast and an AC power line.
摘要翻译： 电子镇流器包括耦合到可变频逆变器的转换器和耦合到逆变器的串联谐振并联负载输出。 当变频器的电源电压降低时，变频器的频率增加。 该转换器包括产生第一电压的全波整流器和产生与第一电压组合以产生电源电压的第二电压的未调节升压电路。 升高量以及因此的电源电压的大小被改变以提供调光。 调光通过电位计机械地或通过控制输入进行电气控制。 响应于第一电压的变化，即由交流电源线上的电压的变化或者由耦合在镇流器和交流电源线之间的电容调光器提供的电压的变化也发生调光。
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公开(公告)号：US5500576A
公开(公告)日：1996-03-19
申请号：US227953
申请日：1994-04-15
CPC分类号： G05F1/70 , H02M1/4225 , H05B41/28 , Y02B70/126 , Y10S315/05
摘要： An electronic ballast has a high voltage portion and a low voltage portion. The high voltage portion includes a converter, having a variable frequency boost circuit, and a half-bridge, driven inverter having a series resonant, direct coupled output. The low voltage portion of the ballast includes a control circuit and fault detectors for shutting off the boost circuit and the inverter circuit. The fault detectors consume very little power when the ballast and lamp are functioning normally. Separate magnetics are used for boost, inverter, and output. Each magnetic is essentially cubic in shape and carries as little current as possible.
摘要翻译： 电子镇流器具有高电压部分和低电压部分。 高电压部分包括具有可变频率升压电路的转换器和具有串联谐振直接耦合输出的半桥驱动逆变器。 镇流器的低电压部分包括控制电路和用于关断升压电路和逆变器电路的故障检测器。 当镇流器和灯正常工作时，故障检测器消耗的功率很小。 单独的磁力线用于升压，逆变和输出。 每个磁体的形状基本上是立方体，并且尽可能少地传输电流。
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公开(公告)号：US5396155A
公开(公告)日：1995-03-07
申请号：US266746
申请日：1994-06-28
IPC分类号： H05B41/285 , H05B41/392 , G05F1/00
CPC分类号： H05B41/2853 , H05B41/3925 , Y02B20/185 , Y10S315/04 , Y10S315/07
摘要： A self-dimming electronic ballast for a gas discharge lamp includes a converter having an unregulated boost circuit coupled to a variable frequency inverter having a series resonant, parallel loaded output. The inverter includes a variable frequency driver circuit having a timing circuit for determining the frequency of the driver. A transistor in the timing circuit operates as an inverting amplifer and is controlled by a signal proportional to the voltage of the AC line. The frequency of the inverter increases with decreasing voltage on the AC line. The ballast can be on the same circuit as incandescent lamps and powered by a triac or variac dimmer for dimming both the incandescent and gas discharge lamps.
摘要翻译： 用于气体放电灯的自调光电子镇流器包括具有耦合到具有串联谐振并联负载输出的变频器的未调节升压电路的转换器。 逆变器包括具有用于确定驾驶员的频率的定时电路的可变频率驱动器电路。 定时电路中的晶体管作为反相放大器工作，并由与AC线的电压成比例的信号控制。 变频器的频率随着交流线路上的电压降低而增加。 镇流器可以与白炽灯在同一电路上，并且由三端双向可控硅开关元件或可变调光器供电，用于对白炽灯和气体放电灯进行调光。
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公开(公告)号：US6023132A
公开(公告)日：2000-02-08
申请号：US170144
申请日：1998-10-12
IPC分类号： H05B41/282 , H05B41/285 , H05B37/02
CPC分类号： H05B41/2853 , H05B41/282 , H05B41/2855 , H05B41/2856 , Y10S315/04
摘要： An ballast includes a variable frequency boost circuit and a driven half-bridge inverter having a series resonant, direct coupled, parallel output. A control circuit includes a variable frequency driver section, a multivibrator section, and a sensing section. The variable frequency driver changes frequency smoothly, i.e. without discontinuities. The multivibrator section acts as a switch that is enabled or disabled by the sensing section for controlling the frequency of the inverter. Lamp current is required for continued operation of the control circuit. The multivibrator section controls starting by causing the inverter to produce an output signal having a trapezoidal envelope. In the event of an arc, the control circuit quenches the arc and the multivibrator periodically pulses the lamp to attempt to re-start the lamp.
摘要翻译： 镇流器包括可变频率升压电路和具有串联谐振，直接耦合并联输出的驱动半桥逆变器。 控制电路包括可变频率驱动器部分，多谐振荡器部分和感测部分。 可变频率驱动器平滑地改变频率，即不间断。 多谐振荡器部分用作感测部分启用或禁用的开关，用于控制变频器的频率。 控制电路的继续运行需要灯电流。 多谐振荡器部分通过使逆变器产生具有梯形包络的输出信号来控制开始。 在电弧的情况下，控制电路使电弧猝灭，并且多谐振荡器周期性地脉冲灯以试图重新启动灯。
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6.发明授权Electronic ballast producing voltage having trapezoidal envelope for instant start lamps 失效电子镇流器产生电压，具有立即起动灯的梯形信封
公开(公告)号：US5982113A
公开(公告)日：1999-11-09
申请号：US879181
申请日：1997-06-20
IPC分类号： H05B41/282 , H05B41/285 , H05B37/02
CPC分类号： H05B41/2853 , H05B41/282 , H05B41/2855 , H05B41/2856 , Y10S315/04
摘要： An instant start ballast includes a variable frequency boost circuit and a driven half-bridge inverter having a series resonant, direct coupled, parallel output. A control circuit includes a variable frequency driver section, a multivibrator section, and a sensing section. The variable frequency driver changes frequency smoothly, i.e. without discontinuities. The multivibrator section acts as a switch that is enabled or disabled by the sensing section for controlling the frequency of the inverter. Lamp current is required for continued operation of the control circuit. The multivibrator section controls starting by causing the inverter to produce an output signal having a trapezoidal envelope. In the event of an arc, the control circuit quenches the arc and the multivibrator periodically pulses the lamp to attempt to re-start the lamp.
摘要翻译： 瞬时启动镇流器包括可变频率升压电路和具有串联谐振，直接耦合并联输出的驱动半桥逆变器。 控制电路包括可变频率驱动器部分，多谐振荡器部分和感测部分。 可变频率驱动器平滑地改变频率，即不间断。 多谐振荡器部分用作感测部分启用或禁用的开关，用于控制变频器的频率。 控制电路的继续运行需要灯电流。 多谐振荡器部分通过使逆变器产生具有梯形包络的输出信号来控制开始。 在电弧的情况下，控制电路使电弧猝灭，并且多谐振荡器周期性地脉冲灯以试图重新启动灯。
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公开(公告)号：US5973455A
公开(公告)日：1999-10-26
申请号：US79844
申请日：1998-05-15
申请人： Grigoriy Mirskiy , William L. Keith , Kent E. Crouse , Peter W. Shackle , Patrick J. Keegan , Ronald J. Bezdon
发明人： Grigoriy Mirskiy , William L. Keith , Kent E. Crouse , Peter W. Shackle , Patrick J. Keegan , Ronald J. Bezdon
IPC分类号： H05B41/295 , H05B41/36 , H05B37/02
CPC分类号： H05B41/36 , H05B41/295 , Y10S315/04 , Y10S315/07
摘要： An electronic ballast for a gas discharge lamp includes an AC to DC converter for changing alternating current at power line voltage to direct current and an inverter powered by the converter and having a series resonant, direct coupled output coupled to the lamp. The inverter includes an AC switch having a diode bridge defining an AC diagonal and a DC diagonal and a transistor connected across the DC diagonal. The primary winding of a filament transformer is connected across the AC diagonal of the bridge and the transistor is coupled to the microprocessor for controlling current through the primary winding. The microprocessor is programmed to close the AC switch while the lamp is starting and to open the switch after the lamp is started, thereby cutting off the filaments from a source of power and reducing the power consumed by the ballast during normal operation. A resistor in series with the transistor is used to detect filament resistance and provide an indication of lamp type.
摘要翻译： 用于气体放电灯的电子镇流器包括用于将电力线电压下的交流电流改变为直流电的AC至DC转换器和由转换器供电的具有耦合到灯的串联谐振的直接耦合输出的逆变器。 逆变器包括AC开关，其具有限定AC对角线和DC对角线的二极管桥和跨DC对角线连接的晶体管。 灯丝变压器的初级绕组连接在桥的AC对角线上，晶体管耦合到微处理器，用于控制通过初级绕组的电流。 微处理器被编程为在灯启动时闭合AC开关，并且在灯启动之后打开开关，从而将灯丝从电源切断，并降低正常操作期间镇流器消耗的功率。 与晶体管串联的电阻器用于检测灯丝电阻并提供灯类型的指示。
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公开(公告)号：US5925990A
公开(公告)日：1999-07-20
申请号：US995278
申请日：1997-12-19
申请人： Kent E. Crouse , Ronald J. Bezdon , Michael W. Bandel , Patrick J. Keegan , Boyko Boykov , Peter W. Shackle , William L. Keith
发明人： Kent E. Crouse , Ronald J. Bezdon , Michael W. Bandel , Patrick J. Keegan , Boyko Boykov , Peter W. Shackle , William L. Keith
IPC分类号： H05B41/285 , H05B41/36 , G05F1/00
CPC分类号： H05B41/2855 , H05B41/36 , Y02B20/186 , Y10S315/07
摘要： An electronic ballast includes an AC to DC converter for power factor correction, a bulk capacitor for storing energy from the converter, and a microprocessor controlled, half-bridge inverter including a series resonant, direct coupled output. Input ports of the microprocessor are coupled to several locations within the ballast to monitor the operation of the ballast or the operation of a gas discharge lamp coupled to the ballast. An analog voltage limiter overrides the microprocessor to limit output voltage under fault conditions. A storage capacitor, connected in series with the bulk capacitor, stores energy at low voltage for powering the microprocessor. The microprocessor is programmed to provide lamp protection features, lumen maintenance, and a warm-up period for a lamp. The microprocessor is also programmed to meet the operating requirements of world markets and of different lamp types.
摘要翻译： 电子镇流器包括用于功率因数校正的AC-DC转换器，用于存储来自转换器的能量的大容量电容器以及包括串联谐振直接耦合输出的微处理器控制的半桥逆变器。 微处理器的输入端口耦合到镇流器内的多个位置，以监测镇流器的操作或耦合到镇流器的气体放电灯的操作。 模拟电压限制器覆盖微处理器以在故障条件下限制输出电压。 与大容量电容器串联连接的存储电容器以低电压存储能量以为微处理器供电。 微处理器被编程为提供灯保护功能，流明维持和灯的预热时间。 微处理器也被编程为满足世界市场和不同灯类型的操作要求。
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公开(公告)号：US5493180A
公开(公告)日：1996-02-20
申请号：US416022
申请日：1995-03-31
IPC分类号： H05B41/24 , H05B41/298 , H05B39/10
CPC分类号： H05B41/2985
摘要： A lamp protective, electronic ballast includes a lamp voltage detector having a capacitor and resistor series connected across a discharge lamp. The junction of the resistor and capacitor is coupled to a voltage sensitive switch for detecting DC offset on the lamp and excessive AC voltage on the lamp. The switch is more sensitive to DC offset than to excessive AC voltage and is disabled while the lamp is started.
摘要翻译： 灯保护电子镇流器包括具有连接在放电灯上的电容器和电阻器串联的灯电压检测器。 电阻器和电容器的结点耦合到电压敏感开关，用于检测灯上的直流偏移和灯上的过大的交流电压。 开关比直流偏移比过大的交流电压更敏感，在启动灯时禁用。
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10.发明授权Booster driven inverter ballast employing the output from the inverter to trigger the booster 失效增压器驱动的逆变器镇流器采用变频器的输出来触发升压器
公开(公告)号：US5461287A
公开(公告)日：1995-10-24
申请号：US202053
申请日：1994-02-25
IPC分类号： H05B41/298 , H05B37/02
CPC分类号： H05B41/2985 , Y10S315/05 , Y10S315/07
摘要： An electronic ballast includes a triggered boost circuit, a driven inverter, and a low voltage signal generator in a a half-bridge, push-pull, series resonant, parallel loaded configuration. The boost circuit is triggered by a voltage from the inverter and the inverter is controlled by the low voltage signal generator. The boost circuit includes a low voltage output for powering the signal generator. In the event of a fault, the operation of the signal generator is interrupted, thereby shutting off the boost circuit and the inverter. A DC blocking capacitor is in series with the lamps and a resistor is connected in parallel with the DC blocking capacitor. The ballast is started by a pulse of displacement current through the lamp filaments to the boost circuit. Since the lamp filaments must be intact, the ballast does not begin a lamp starting sequence until lamps are connected to the ballast.
摘要翻译： 电子镇流器包括触发升压电路，从动逆变器和半桥式推挽串联谐振并联负载配置中的低电压信号发生器。 升压电路由变频器的电压触发，变频器由低压信号发生器控制。 升压电路包括用于为信号发生器供电的低电压输出。 发生故障时，信号发生器的运行中断，从而关闭升压电路和逆变器。 直流隔离电容器与灯串联，并且电阻器与隔直流电容器并联连接。 镇流器通过灯丝的位移电流脉冲启动到升压电路。 由于灯丝必须是完整的，所以镇流器不会开始灯起动顺序，直到灯泡连接到镇流器。
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