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    Inverter power supply
    1.
    发明授权
    Inverter power supply 失效
    逆变电源

    公开(公告)号：US5449979A

    公开(公告)日：1995-09-12

    申请号：US125436

    申请日：1993-09-22

    申请人： Atsushi Ueoka ,  Akinori Hiramatsu ,  Hiroyuki Sako ,  Kazuhiro Gotoh

    发明人： Atsushi Ueoka ,  Akinori Hiramatsu ,  Hiroyuki Sako ,  Kazuhiro Gotoh

    IPC分类号： H05B41/285 ,  H05B37/02

    CPC分类号： H05B41/2855 ,  Y10S315/07

    摘要： A power supply with an inverter capable of avoiding the inverter from producing excessive high voltage when a load is detached or the load impedance is greatly increased. The inverter is energized by a fixed DC voltage source and includes at least one switching element and an L-C resonant circuit. The switching element is driven to turn on and off and cooperative with the L-C resonant circuit to produce a high frequency AC voltage at an inverter output for driving a load. The inverter includes first and second clamping diodes connected in series across the DC voltage source in anti-parallel relation thereto with the first and second diodes defining therebetween a first connection point. Also included in the inverter is a pair of first and second impedance elements which are connected in series across the inverter output to provide a divided voltage indicative of an output voltage of the inverter with the first and second impedance elements defining therebetween a second connection point. The first and second connection points are connected to each other so as to keep the points at a voltage level nearly equal to a fixed voltage of the DC voltage source, in such a manner as to limit the output voltage of the inverter below a predetermined level by allowing a clamping current to flow through the first and second diodes and impedance elements and through the DC voltage source to escape the excessive voltage developed in response to the increase in the impedance of the load.

    摘要翻译： 具有逆变器的电源，能够避免在负载分离或负载阻抗大大增加时逆变器产生过高的高电压。 逆变器由固定的直流电压源供电，并且包括至少一个开关元件和L-C谐振电路。 开关元件被驱动以导通和关断，并与L-C谐振电路协调以在用于驱动负载的逆变器输出处产生高频AC电压。 逆变器包括与反向平行关系的DC电压源串联连接的第一和第二钳位二极管，第一和第二二极管在其间限定第一连接点。 还包括在逆变器中的是一对第一和第二阻抗元件，其串联连接在逆变器输出端上，以提供表示逆变器的输出电压的分压，第一和第二阻抗元件在其间限定第二连接点。 第一连接点和第二连接点彼此连接，以便将点保持在与DC电压源的固定电压几乎相等的电压水平，以将逆变器的输出电压限制在预定水平以下 通过允许钳位电流流过第一和第二二极管和阻抗元件以及通过DC电压源，以避免响应于负载的阻抗的增加而产生的过大的电压。

    Electronic ballast for hot cathode discharge lamps
    2.
    发明授权
    Electronic ballast for hot cathode discharge lamps 失效
    电子镇流器用于热阴极放电灯

    公开(公告)号：US5565740A

    公开(公告)日：1996-10-15

    申请号：US517302

    申请日：1995-08-21

    申请人： Akinori Hiramatsu ,  Hiroyuki Sako ,  Kazuhiro Gotoh ,  Nobukazu Miki

    发明人： Akinori Hiramatsu ,  Hiroyuki Sako ,  Kazuhiro Gotoh ,  Nobukazu Miki

    IPC分类号： H02M7/48 ,  H05B41/24 ,  H05B41/282 ,  H05B41/295 ,  H05B37/02

    CPC分类号： H05B41/295 ,  Y10S315/07

    摘要： An electronic ballast for hot cathode discharge lamp comprises a DC voltage source, a chopper, and an inverter. The chopper includes a switching element connected in series with an inductor across the DC voltage and driven to turn on and off for providing a periodically interrupted voltage which is smoothed by a capacitor to produce a smoothed DC voltage as a chopper output. The inverter includes at least one switching element which is coupled to the chopper output to produce therefrom a high frequency AC voltage as an inverter output to be applied to cathodes of the discharge lamp for lighting the discharge lamp. The ballast is characterized to include an inverter controller and a delay circuit. The inverter controller controls the inverter to operate selectively in a normal mode of providing the inverter output of a first level and in a limited mode of providing the inverter output of a second level which is lower than the first level and is determined to give a preheating current to the cathodes. The delay circuit delays the start-up of the inverter for a time period from the start-up of the chopper. The inverter controller controls the inverter to operate in the limited mode after the start-up of the inverter for a predetermined period for preheating the discharge lamp after which the inverter controller allows the inverter to operate in the normal operation mode for lighting the discharge lamp.

    摘要翻译： 一种用于热阴极放电灯的电子镇流器包括直流电压源，斩波器和逆变器。 斩波器包括与跨越直流电压的电感器串联连接的开关元件，并被驱动以导通和截止，以提供由电容器平滑以产生平滑的直流电压作为斩波器输出的周期性中断的电压。 逆变器包括至少一个开关元件，该开关元件耦合到斩波器输出，从而产生高频AC电压作为逆变器输出，以施加到用于点亮放电灯的放电灯的阴极。 该镇流器的特征在于包括逆变器控制器和延迟电路。 逆变器控制器控制逆变器在提供第一电平的逆变器输出的正常模式下选择性地操作，并且在限制模式中提供低于第一电平的第二电平的逆变器输出，并且被确定为给出预热 电流到阴极。 延迟电路延迟从斩波器启动起的一段时间内的逆变器启动。 逆变器控制器在逆变器控制器允许逆变器在用于照明放电灯的正常操作模式下操作的预定放电灯的预定时间之后，控制逆变器在变频器启动之后以限制模式操作。

    Power supply
    3.
    发明授权
    Power supply 失效
    电源

    公开(公告)号：US5495149A

    公开(公告)日：1996-02-27

    申请号：US65247

    申请日：1993-05-20

    申请人： Akinori Hiramatsu ,  Hiroyuki Sako ,  Kazuhiro Gotoh ,  Nobukazu Miki ,  Seiji Soga ,  Naokage Kishimoto

    发明人： Akinori Hiramatsu ,  Hiroyuki Sako ,  Kazuhiro Gotoh ,  Nobukazu Miki ,  Seiji Soga ,  Naokage Kishimoto

    IPC分类号： H02H7/122 ,  H05B41/24 ,  H05B41/282 ,  H05B41/285 ,  H05B41/295 ,  H05B41/298 ,  H05B37/02

    CPC分类号： H05B41/2855 ,  H05B41/282 ,  H05B41/295 ,  H05B41/2985 ,  Y02B20/183 ,  Y10S315/07

    摘要： A power supply for driving one or more loads includes a DC voltage source, an inverter connected to the DC voltage source for providing a high frequency AC voltage at its output end, and an output transformer having a primary winding and a secondary winding. The primary winding is coupled to the output end of the inverter through a tuning inductor, while the secondary winding is coupled to the load. A tuning capacitor, which constitutes a resonant circuit in cooperation with the resonance inductance for supplying a resonance current to the load, is connected across the secondary winding of the output transformer in parallel relation to the load. The tuning capacitor is arranged in circuit on the opposite side of the secondary winding from the load such that the tuning capacitor is open-circuited when the load is disconnected from the secondary winding.

    摘要翻译： 用于驱动一个或多个负载的电源包括DC电压源，连接到DC电压源的反相器，用于在其输出端提供高频AC电压，以及具有初级绕组和次级绕组的输出变压器。 初级绕组通过调谐电感器耦合到逆变器的输出端，而次级绕组耦合到负载。 与谐振电感配合构成谐振电路的调谐电容器与负载并联地连接在输出变压器的次级绕组的两端。 调谐电容器布置在次级绕组与负载相对的电路中，使得当负载与次级绕组断开时调谐电容器开路。

    Inverter device
    4.
    发明授权
    Inverter device 失效
    逆变器装置

    公开(公告)号：US5182702A

    公开(公告)日：1993-01-26

    申请号：US633612

    申请日：1990-12-24

    申请人： Akinori Hiramatsu ,  Futoshi Okamoto ,  Hiroshi Kido ,  Hiroyuki Sako ,  Yukio Yamanaka ,  Koji Yamada

    发明人： Akinori Hiramatsu ,  Futoshi Okamoto ,  Hiroshi Kido ,  Hiroyuki Sako ,  Yukio Yamanaka ,  Koji Yamada

    IPC分类号： H02M1/00 ,  H02M1/42 ,  H02M3/338 ,  H05B41/28

    CPC分类号： H02M1/425 ,  H02M3/3387 ,  H05B41/28 ,  Y02B70/126 ,  Y10S315/07

    摘要： An inverter device has a full-wave rectifier providing a pulsating DC voltage from an input AC voltage, a smoothing circuit. The smoothing circuit includes a choke coil, a smoothing capacitor and a switching element chopping the pulsating DC voltage through the choke coil into a smoothed DC voltage at the smoothing capacitor. An inverter is included to have the element common to the smoothing circuit and operating to switch the smoothed DC voltage to apply a resulting voltage to a load circuit including a load, inductance and capacitor. The inductance and capacitor define an oscillation circuit providing to the load an oscillating current composed of first and second currents of opposite directions. The oscillating current alternating to flow for a nominal on-time duration determined by a circuit constant of the oscillation circuit itself. A controller is included to detect the termination of the second current and excites the common switching element at a timing dependent upon the termination of the second current so as to start flowing the first current. The controller includes a timer for separately controlling an actual on-time duration for flowing the first current within the nominal on-time duration, whereby enabling to regulate the accumulated DC voltage in the smoothing capacitor at a desired level by controlling to vary the actual on-time duration of the common switching element.

    LED lighting device
    5.
    发明授权
    LED lighting device 有权
    LED照明装置

    公开(公告)号：US08575857B2

    公开(公告)日：2013-11-05

    申请号：US13159777

    申请日：2011-06-14

    申请人： Hiroyuki Sako ,  Katsunobu Hamamoto ,  Takeshi Saito ,  Hiroki Nakagawa ,  Hiroshi Terasaka

    发明人： Hiroyuki Sako ,  Katsunobu Hamamoto ,  Takeshi Saito ,  Hiroki Nakagawa ,  Hiroshi Terasaka

    IPC分类号： H05B37/02

    CPC分类号： H05B33/089 ,  H05B33/0815 ,  Y02B20/347 ,  Y02B20/348

    摘要： The LED lighting device includes a lighting circuit unit, a current detecting unit, a voltage detecting unit, and a control unit. The lighting circuit unit is adapted in use to be connected to a lamp socket to be connected to a LED lamp, and is configured to provide an output voltage in the form of a DC voltage to the lamp socket in a manner to turn on the LED lamp. The current detecting unit is configured to detect an output current which is caused by the output voltage and is supplied from said lighting circuit unit to said lamp socket. The voltage detecting unit is configured to detect the output voltage of said lighting circuit unit. The control unit configured to control the lighting circuit unit. The control unit is configured to perform constant-current control of control the lighting circuit unit in a manner to regulate the output voltage such that the output current is identical to a target value while keeping the output voltage not higher than a maximum-load voltage, when the output current detected by the current detecting unit is not less than a predetermined threshold value, and is configured to perform no-load control of controlling the lighting circuit unit in a manner to regulate the output voltage such that the output voltage is kept identical to a no-load voltage higher than the maximum-load voltage, when the output current detected by the current detecting unit is less than the predetermined threshold value.

    摘要翻译： LED照明装置包括照明电路单元，电流检测单元，电压检测单元和控制单元。 照明电路单元适于连接到要连接到LED灯的灯座，并且被配置为以将LED的形式的DC电压的形式的LED输出电压提供给灯插座 灯。 电流检测单元被配置为检测由输出电压引起的并从所述点亮电路单元提供给所述灯座的输出电流。 电压检测单元被配置为检测所述点亮电路单元的输出电压。 所述控制单元被配置为控制所述点亮电路单元。 控制单元被配置为以保持输出电压不高于最大负载电压的方式对调节输出电压进行控制的恒流控制，使得输出电流与目标值相同， 当由电流检测单元检测到的输出电流不小于预定阈值时，并且被配置为以调节输出电压的方式执行控制点亮电路单元的空载控制，使得输出电压保持相同 当由电流检测单元检测到的输出电流小于预定阈值时，该空载电压高于最大负载电压。

    Power supply device
    6.
    发明授权
    Power supply device 失效
    电源设备

    公开(公告)号：US5771159A

    公开(公告)日：1998-06-23

    申请号：US891060

    申请日：1997-07-10

    申请人： Hiroyuki Sako ,  Koji Nishiura ,  Masahiro Yamanaka

    发明人： Hiroyuki Sako ,  Koji Nishiura ,  Masahiro Yamanaka

    IPC分类号： H02M1/00 ,  H02M1/42 ,  H02M7/48 ,  H05B41/28 ,  H05B41/282 ,  H02M5/44

    CPC分类号： H02M1/425 ,  H02M7/48 ,  H05B41/28 ,  H05B41/2825 ,  H02M2007/4815 ,  Y02B70/126 ,  Y02B70/1441

    摘要： A power supply device in which an inverter circuit is supplied with power directly from a rectification circuit, the inverter circuit has a pair of switching elements connected in series with each other and connected between both ends of the rectification circuit through an impedance element, a series circuit of the impedance element, two capacitors and an inductor is connected in parallel to one of the switching elements of the inverter circuit connected to positive polarity one of the both ends of the rectification circuit, a load is connected across one of the capacitor, a valley filling circuit receives an output of the inverter circuit through a diode provided in the valley filling circuit and supplies it to a power supply capacitor provided therein and, when a DC output voltage of the rectification circuit drops, the valley filling circuit supplies power to the inverter circuit via the power supply capacitor and another diode provided therein. Thereby, fluctuations in a current supplied to the load can be effectively reduced.

    摘要翻译： 一种电源装置，其中逆变器电路从整流电路直接供电，逆变器电路具有彼此串联连接的一对开关元件，并通过阻抗元件串联连接在整流电路的两端之间 阻抗元件的电路，两个电容器和电感器并联连接到与整流电路两端的正极连接的逆变器电路的一个开关元件，负载连接在电容器之一上，一个 谷填充电路通过设置在谷状填充电路中的二极管接收逆变器电路的输出，并将其提供给设置在其中的电源电容器，并且当整流电路的直流输出电压下降时，谷底充电电路向 逆变器电路经由电源电容器和设置在其中的另一二极管。 由此，可以有效地降低供给负载的电流的波动。

    Electronic track lighting system
    10.
    发明授权
    Electronic track lighting system 有权
    电子轨道照明系统

    公开(公告)号：US06246182B1

    公开(公告)日：2001-06-12

    申请号：US09563166

    申请日：2000-05-01

    申请人： Shigeaki Yamasaki ,  Hiroyuki Sako

    发明人： Shigeaki Yamasaki ,  Hiroyuki Sako

    IPC分类号： H05B3702

    CPC分类号： H05B39/045 ,  H05B39/00 ,  Y02B20/142

    摘要： An electronic track lighting system comprises a power supply filter circuit having an input connected to an alternating current power supply AC, a rectifier circuit connected to an output of the power supply filter circuit, an inverter circuit connected to an output of the rectifier circuit and outputting a high frequency voltage by on/off operation of switching elements therein, a lamp load, and a power track providing supply voltage to the lamp load. The lighting system further comprises a first unit which is interposed between the AC power supply and an input of the power track and includes at least the power supply filter circuit, and a second unit which is provided as a structure independent from the first unit, is connected to the power track and outputs a high frequency voltage to the lamp load.

    摘要翻译： 电子轨道照明系统包括具有连接到交流电源AC的输入的电源滤波器电路，连接到电源滤波器电路的输出的整流电路，连接到整流电路的输出并输出 通过其中的开关元件的开/关操作的高频电压，灯负载和向灯负载提供电源电压的电力轨道。 照明系统还包括插入在AC电源和电源轨的输入之间的第一单元，并且至少包括电源滤波器电路和作为独立于第一单元的结构提供的第二单元， 连接到电源轨道并向灯负载输出高频电压。