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    • 11. 发明申请
    • COLD CATHODE FLUORESCENT LIGHTING DISCHARGE TUBE DEVICE
    • 冷阴极荧光灯放电管设备
    • US20080303449A1
    • 2008-12-11
    • US12122756
    • 2008-05-19
    • Toru Ashikaga
    • Toru Ashikaga
    • H05B37/02
    • H05B41/2827
    • A cold cathode fluorescent lighting discharge tube device is provided which comprises a first ballast element 21, 31 connected between each first end 3a of a pair (i) of discharge tubes 3 and a first output end 1a of an inverter 1, a second ballast element 22, 32 connected between a second terminal 3b of one of the pair (i) of discharge tubes 3 and a second output terminal 1b of inverter 1, and a third ballast element 23, 33 connected between second terminal 3b of the other of the pair of discharge tubes 3 and second output terminal 1b of inverter 1. This circuit configuration allows independent operation of second and third ballast elements 22, 23 while improving uneven brightness along discharge tube 3, and can apply a trigger voltage of sufficient level to unlit discharge tube 3 without providing ballast elements of double in number of plural discharge tubes 3.
    • 提供一种冷阴极荧光照明放电管装置,其包括连接在放电管3的一对(i)的每个第一端3a和逆变器1的第一输出端1a之间的第一镇流器元件21,31,第二镇流器元件 连接在放电管3的一对(i)的第二端子3b和反相器1的第二输出端子1b之间的第二端子32和连接在另一对的第二端子3b之间的第三镇流器元件23,33 的放电管3和第二输出端子1b。该电路配置允许第二和第三镇流器元件22,23的独立操作,同时改善沿着放电管3的不均匀亮度,并且可以向不点亮的放电管施加足够电平的触发电压 3,没有提供多个放电管3的数量的双重的镇流器元件。
    • 12. 发明申请
    • AC POWER SOURCE APPARATUS
    • 交流电源设备
    • US20110103109A1
    • 2011-05-05
    • US12674988
    • 2008-09-10
    • Toru AshikagaKengo Kimura
    • Toru AshikagaKengo Kimura
    • H02M7/497
    • H05B41/2827H02M7/48
    • An AC power source apparatus includes a first AC voltage generator having a first switch set, to output a first AC voltage having a positive-negative asymmetrical waveform by turning on/off the first switch set to a first end of a load; a second AC voltage generator having a second switch set, to output a second AC voltage having a positive-negative asymmetrical waveform and a phase difference of 180 degrees with respect to the first AC voltage by turning on/off the second switch set to a second end of the load; and a control circuit to turn on/off the first switch set, and by setting a phase difference of 180 degrees with respect to the turning on/off of the first switch set, turn on/off the second switch set. A voltage across the load is an AC voltage having a positive-negative symmetrical waveform.
    • 交流电源装置包括具有第一开关组的第一交流电压发生器,通过将第一开关组置于负载的第一端来输出具有正负非对称波形的第一交流电压; 具有第二开关组的第二AC电压发生器,通过将所述第二开关组接通/断开来输出相对于所述第一AC电压的正负不对称波形和相位差为180度的第二AC电压 负载结束; 以及控制电路,用于接通/关闭第一开关组,并且通过相对于第一开关组的接通/断开设定180度的相位差,打开/关闭第二开关组。 负载电压是具有正负对称波形的交流电压。
    • 14. 发明授权
    • DC/AC converter
    • DC / AC转换器
    • US08315075B2
    • 2012-11-20
    • US12561765
    • 2009-09-17
    • Kengo KimuraToru AshikagaToshihiro Nakano
    • Kengo KimuraToru AshikagaToshihiro Nakano
    • H02M3/24H02M3/335
    • H02M7/53803H02M2007/4815H05B41/2828Y02B70/1441
    • A DC/AC converter includes: a resonant circuit including a transformer having a primary winding and a secondary winding and at least one capacitor, in which the capacitor is connected to at least one of the primary winding and secondary winding of the transformer, and an output terminal to which the load is to be connected is provided on the secondary winding side; a switching circuit connected to both ends of a direct current power supply and having a bridge configuration composed of switching elements for flowing a current through the primary winding of the transformer and the capacitor in the resonant circuit; and a control circuit that turns on/off the switching elements by a pair of drive signals, and flows a current through the load bidirectionally, thereby performs a PWM control for the current flowing through the load, wherein the control circuit includes step drive circuits which turn on the switching elements in steps, and the step drive circuits are provided so as to individually correspond to the switching elements.
    • DC / AC转换器包括:谐振电路,包括具有初级绕组和次级绕组的变压器和至少一个电容器,其中电容器连接到变压器的初级绕组和次级绕组中的至少一个,以及 在次级绕组侧设置要连接负载的输出端子; 连接到直流电源的两端的开关电路,具有由用于使电流流过变压器的初级绕组的电流的开关元件和谐振电路中的电容器构成的桥式结构; 以及控制电路,其通过一对驱动信号使开关元件接通/断开,并且通过负载双向流动电流,从而对流过负载的电流进行PWM控制,其中,所述控制电路包括步进驱动电路, 以逐步的方式接通开关元件,并且提供步进驱动电路以分别对应于开关元件。
    • 15. 发明授权
    • Cold cathode fluorescent lamp inverter apparatus
    • 冷阴极荧光灯逆变器
    • US07994736B2
    • 2011-08-09
    • US11955040
    • 2007-12-12
    • Hiroshi UsuiToru AshikagaJaehee Cho
    • Hiroshi UsuiToru AshikagaJaehee Cho
    • G05F1/00
    • H05B41/2858Y02B20/186
    • A cold cathode fluorescent lamp inverter apparatus includes a series circuit connected to a DC power source and including first and second switching elements, a series circuit connected between a connection point of the first and second switching elements and the DC power source and including a primary winding of a transformer, a reactor, and a capacitor, a cold cathode fluorescent lamp connected to a secondary winding of the transformer, a current detector connected to the cold cathode fluorescent lamp and to the secondary winding, to detect a value of a current passed through the cold cathode fluorescent lamp, and a controller to turn on/off the first and second switching elements alternately with each other according to the detected current value. The current detector detects a ripple component in the DC power source, and corrects the current of the cold cathode fluorescent lamp according to the detected ripple component.
    • 冷阴极荧光灯逆变器装置包括连接到直流电源并包括第一和第二开关元件的串联电路,串联电路,连接在第一和第二开关元件的连接点与直流电源之间,并包括初级绕组 变压器,电抗器和电容器,连接到变压器的次级绕组的冷阴极荧光灯,连接到冷阴极荧光灯和次级绕组的电流检测器,以检测通过的电流的值 冷阴极荧光灯和根据检测到的电流值彼此交替地开/关第一和第二开关元件的控制器。 电流检测器检测直流电源中的纹波分量,并根据检测到的纹波分量校正冷阴极荧光灯的电流。
    • 16. 发明授权
    • Alternating current power supply device and integrated circuit for alternating current power supply device
    • 交流电源装置和交流电源装置的集成电路
    • US07839659B2
    • 2010-11-23
    • US12295363
    • 2007-11-16
    • Toru Ashikaga
    • Toru Ashikaga
    • H02M3/335
    • H02M7/53803H02M2001/0022H02M2007/4815H05B41/2825H05B41/392Y02B70/1441
    • An alternating current power supply device is provided with switch elements Q1, Q2 for converting direct current power from a direct current power supply Vin into alternating current power; a transformer T1 for converting the voltage of the alternating current power converted by the switch elements into other voltage; a load 20 connected to an output terminal of the transformer; a first detecting circuit 30 for detecting a first electric signal indicating power to be supplied to the load; a second detecting circuit 40 for detecting a second electric signal indicating the voltage of the direct current power supply; a feedback circuit 50 for generating a feedback signal based on the first electric signal detected by the first detecting circuit and the second electric signal detected by the second detecting circuit; and a control circuit 10 for generating a control signal based on the feedback signal from the feedback circuit and controlling on/off of the switch elements by the control signal so that power to be supplied to the load is at a prescribed value.
    • 交流电源装置设置有用于将来自直流电源Vin的直流电力转换为交流电力的开关元件Q1,Q2; 用于将由开关元件转换的交流电力的电压转换为其他电压的变压器T1; 连接到变压器的输出端子的负载20; 第一检测电路30,用于检测指示要提供给负载的功率的第一电信号; 用于检测指示直流电源的电压的第二电信号的第二检测电路40; 反馈电路50,用于基于由第一检测电路检测到的第一电信号和由第二检测电路检测的第二电信号产生反馈信号; 以及控制电路10,用于基于来自反馈电路的反馈信号产生控制信号,并通过控制信号控制开关元件的导通/截止,从而提供给负载的功率为规定值。
    • 17. 发明申请
    • DC/AC CONVERTER
    • 直流/交流转换器
    • US20100073976A1
    • 2010-03-25
    • US12561765
    • 2009-09-17
    • Kengo KIMURAToru AshikagaToshihiro Nakano
    • Kengo KIMURAToru AshikagaToshihiro Nakano
    • H02M7/44
    • H02M7/53803H02M2007/4815H05B41/2828Y02B70/1441
    • A DC/AC converter includes: a resonant circuit including a transformer having a primary winding and a secondary winding and at least one capacitor, in which the capacitor is connected to at least one of the primary winding and secondary winding of the transformer, and an output terminal to which the load is to be connected is provided on the secondary winding side; a switching circuit connected to both ends of a direct current power supply and having a bridge configuration composed of switching elements for flowing a current through the primary winding of the transformer and the capacitor in the resonant circuit; and a control circuit that turns on/off the switching elements by a pair of drive signals, and flows a current through the load bidirectionally, thereby performs a PWM control for the current flowing through the load, wherein the control circuit includes step drive circuits which turn on the switching elements in steps, and the step drive circuits are provided so as to individually correspond to the switching elements.
    • DC / AC转换器包括:谐振电路,包括具有初级绕组和次级绕组的变压器和至少一个电容器,其中电容器连接到变压器的初级绕组和次级绕组中的至少一个,以及 在次级绕组侧设置要连接负载的输出端子; 连接到直流电源的两端的开关电路,具有由用于使电流流过变压器的初级绕组的电流的开关元件和谐振电路中的电容器构成的桥式结构; 以及控制电路,其通过一对驱动信号使开关元件接通/断开,并且通过负载双向流动电流,从而对流过负载的电流进行PWM控制,其中,所述控制电路包括步进驱动电路, 以逐步的方式接通开关元件,并且提供步进驱动电路以分别对应于开关元件。
    • 18. 发明申请
    • COLD CATHODE FLUORESCENT LAMP INVERTER APPARATUS
    • 冷阴极荧光灯逆变器装置
    • US20080150444A1
    • 2008-06-26
    • US11955040
    • 2007-12-12
    • Hiroshi UsuiToru AshikagaJaehee Cho
    • Hiroshi UsuiToru AshikagaJaehee Cho
    • H05B41/14
    • H05B41/2858Y02B20/186
    • A cold cathode fluorescent lamp inverter apparatus includes a series circuit connected to a DC power source and including first and second switching elements, a series circuit connected between a connection point of the first and second switching elements and the DC power source and including a primary winding of a transformer, a reactor, and a capacitor, a cold cathode fluorescent lamp connected to a secondary winding of the transformer, a current detector connected to the cold cathode fluorescent lamp and to the secondary winding, to detect a value of a current passed through the cold cathode fluorescent lamp, and a controller to turn on/off the first and second switching elements alternately with each other according to the detected current value. The current detector detects a ripple component in the DC power source, and corrects the current of the cold cathode fluorescent lamp according to the detected ripple component.
    • 冷阴极荧光灯逆变器装置包括连接到直流电源并包括第一和第二开关元件的串联电路,串联电路,连接在第一和第二开关元件的连接点与直流电源之间,并包括初级绕组 变压器,电抗器和电容器,连接到变压器的次级绕组的冷阴极荧光灯,连接到冷阴极荧光灯和次级绕组的电流检测器,以检测通过的电流的值 冷阴极荧光灯和根据检测到的电流值彼此交替地开/关第一和第二开关元件的控制器。 电流检测器检测直流电源中的纹波分量,并根据检测到的纹波分量校正冷阴极荧光灯的电流。