公开(公告)号：US06621238B2

公开(公告)日：2003-09-16

申请号：US09683619

申请日：2002-01-25

申请人： Louis R. Nerone ,  David J. Kachmarik ,  Melvin C. Cosby

发明人： Louis R. Nerone ,  David J. Kachmarik ,  Melvin C. Cosby

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。

公开(公告)号：US06686705B2

公开(公告)日：2004-02-03

申请号：US09683620

申请日：2002-01-25

申请人： Louis R. Nerone ,  David J. Kachmarik ,  Melvin C. Cosby

发明人： Louis R. Nerone ,  David J. Kachmarik ,  Melvin C. Cosby

IPC分类号： G05F100

CPC分类号： H05B41/40 ,  H05B41/3921

摘要： A ballast circuit is provided, comprising: a plurality of inverters, each inverter for powering a load; and a controller operationally coupled to a shutdown control signal of each inverter for selectively shutting down any combination of inverters. In another aspect, the controller is for selectively disabling any combination of inverters to effectively disconnect the load associated with each disabled inverter. The controller is for receiving communications from a control device, each communication a selection of 0%, “n−1” approximate percentages each associated with a ratio of “1” through “n−1” loads to “n” loads, where “n” is the total number of loads powered by the inverters of the ballast circuit and where the numerator for each ratio is an integer between “1” and “n−1,” inclusive, or 100% light from the combined loads powered by the inverters of the ballast circuit.

摘要翻译： 提供了一种镇流器电路，包括：多个逆变器，每个用于为负载供电的逆变器; 以及操作地耦合到每个逆变器的关闭控制信号的控制器，用于选择性地关闭逆变器的任何组合。 另一方面，控制器用于选择性地禁用逆变器的任何组合以有效地断开与每个禁用的逆变器相关联的负载。 控制器用于从控制设备接收通信，每个通信选择0％，“n-1”个近似百分比，每个与“1”到“n-1”个负载的比率相关联到“n”个负载，其中“ n“是由镇流器电路的反相器供电的负载的总数，并且每个比率的分子是”1“和”n-1“之间的整数，包括0或100％，来自由 逆变器的镇流器电路。

公开(公告)号：US06459214B1

公开(公告)日：2002-10-01

申请号：US09681451

申请日：2001-04-10

申请人： Timothy Chen ,  Melvin C. Cosby ,  James K. Skully

发明人： Timothy Chen ,  Melvin C. Cosby ,  James K. Skully

IPC分类号： H05B3702

CPC分类号： H05B41/295

摘要： Prior to a load being activated, a first capacitive network and the load are operationally in parallel with each other, and the first capacitive network and a first inductor are in series with each other. A second inductor is magnetically coupled to the first inductor to boost a voltage supplied to the load. When the load is activated, a second capacitive network, the load, and the first inductor are operationally in series with each other. In a further embodiment, the first inductor and a second inductor are not capacitively coupled together, rather the second inductor generates lagging current at a first node to cancel leading current generated by the first capacitive network. Heating of the load is accomplished by the use of a cathode heater winding in operational connection with at least one of the cathodes.

摘要翻译： 在负载被激活之前，第一电容网络和负载在操作上彼此并联，并且第一电容网络和第一电感器彼此串联。 第二电感器磁耦合到第一电感器以升高提供给负载的电压。 当负载被激活时，第二电容网络，负载和第一电感器在操作上彼此串联。 在另一个实施例中，第一电感器和第二电感器不是电容耦合在一起的，而是第二电感器在第一节点处产生滞后电流以消除由第一电容网络产生的引出电流。 通过使用与至少一个阴极操作连接的阴极加热器绕组来实现负载的加热。