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公开(公告)号：US08754587B2
公开(公告)日：2014-06-17
申请号：US13381980
申请日：2010-06-29
CPC分类号： H02M3/335 , H02M1/4225 , H02M2001/007 , H05B33/0815 , Y02B70/126 , Y10T307/25
摘要： A power supply circuit has an LLC converter stage for converting a DC voltage input into a DC voltage output, and at least one hysteretic converter stage. Each hysteretic converter stage has a DC voltage input coupled to the DC voltage output of the LLC converter stage, and a DC current output. The LLC converter stage lacks a feedback control, and is operated at its load independent point. A ripple on the DC voltage output of the LLC converter does not affect the output current of the hysteretic converter stage. The stable DC current output of the hysteretic converter stage is coupled to a load having one or more LED strings.
摘要翻译： 电源电路具有用于将DC电压输入转换为DC电压输出的LLC转换器级和至少一个迟滞转换级。 每个迟滞转换器级具有耦合到LLC转换器级的DC电压输出的直流电压输入和直流电流输出。 LLC转换器级缺乏反馈控制，并且在其负载独立点运行。 LLC转换器的直流电压输出上的纹波不影响滞后转换器级的输出电流。 迟滞转换器级的稳定DC电流输出耦合到具有一个或多个LED串的负载。
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公开(公告)号：US08836225B2
公开(公告)日：2014-09-16
申请号：US13497533
申请日：2010-09-21
CPC分类号： H05B33/0815 , H05B33/0818 , Y02B20/346 , Y02B20/348
摘要： A dimmable LED driver circuit comprises a resonant DC-DC converter coupled to an output circuit. The converter comprises a half bridge or full bridge switching circuit coupled to a resonant circuit. An output of the resonant circuit is rectified and fed to the output circuit. The output circuit may comprise at least one LED series or shunt switch for switching an LED unit on and off. A control circuit controls the switches of the switching circuit at a variable switching frequency. The control circuit is also configured for controlling the switching circuit for amplitude modulating the converter and for pulse-width modulating the converter at a first pulse-width modulation frequency lower than the switching frequency. The control circuit is may further be configured for controlling the switching of the LED switch at a second pulse-width modulation frequency lower than the switching frequency.
摘要翻译： 可调光LED驱动器电路包括耦合到输出电路的谐振DC-DC转换器。 该转换器包括耦合到谐振电路的半桥或全桥开关电路。 谐振电路的输出被整流并馈送到输出电路。 输出电路可以包括用于切换LED单元的至少一个LED串联或分流开关。 控制电路以可变的开关频率来控制开关电路的开关。 控制电路还被配置为控制用于对转换器进行幅度调制的开关电路，并且以低于开关频率的第一脉冲宽度调制频率对转换器进行脉宽调制。 控制电路还可以被配置为在低于开关频率的第二脉冲宽度调制频率下控制LED开关的切换。
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公开(公告)号：US20120181940A1
公开(公告)日：2012-07-19
申请号：US13497533
申请日：2010-09-21
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0818 , Y02B20/346 , Y02B20/348
摘要： A dimmable LED driver circuit comprises a resonant DC-DC converter coupled to an output circuit. The converter comprises a half bridge or full bridge switching circuit coupled to a resonant circuit. An output of the resonant circuit is rectified and fed to the output circuit. The output circuit may comprise at least one LED series or shunt switch for switching an LED unit on and off. A control circuit controls the switches of the switching circuit at a variable switching frequency. The control circuit is also configured for controlling the switching circuit for amplitude modulating the converter and for pulse-width modulating the converter at a first pulse-width modulation frequency lower than the switching frequency. The control circuit is may further be configured for controlling the switching of the LED switch at a second pulse-width modulation frequency lower than the switching frequency.
摘要翻译： 可调光LED驱动器电路包括耦合到输出电路的谐振DC-DC转换器。 该转换器包括耦合到谐振电路的半桥或全桥开关电路。 谐振电路的输出被整流并馈送到输出电路。 输出电路可以包括用于切换LED单元的至少一个LED串联或分流开关。 控制电路以可变的开关频率来控制开关电路的开关。 控制电路还被配置为控制用于对转换器进行幅度调制的开关电路，并且以低于开关频率的第一脉冲宽度调制频率对转换器进行脉宽调制。 控制电路还可以被配置为在低于开关频率的第二脉冲宽度调制频率下控制LED开关的切换。
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公开(公告)号：US20120112657A1
公开(公告)日：2012-05-10
申请号：US13381980
申请日：2010-06-29
CPC分类号： H02M3/335 , H02M1/4225 , H02M2001/007 , H05B33/0815 , Y02B70/126 , Y10T307/25
摘要： A power supply circuit has an LLC converter stage for converting a DC voltage input into a DC voltage output, and at least one hysteretic converter stage. Each hysteretic converter stage has a DC voltage input coupled to the DC voltage output of the LLC converter stage, and a DC current output. The LLC converter stage lacks a feedback control, and is operated at its load independent point. A ripple on the DC voltage output of the LLC converter does not affect the output current of the hysteretic converter stage. The stable DC current output of the hysteretic converter stage is coupled to a load having one or more LED strings.
摘要翻译： 电源电路具有用于将DC电压输入转换为DC电压输出的LLC转换器级和至少一个迟滞转换级。 每个迟滞转换器级具有耦合到LLC转换器级的DC电压输出的直流电压输入和直流电流输出。 LLC转换器级缺乏反馈控制，并且在其负载独立点运行。 LLC转换器的直流电压输出上的纹波不影响滞后转换器级的输出电流。 迟滞转换器级的稳定DC电流输出耦合到具有一个或多个LED串的负载。
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5.发明授权公开(公告)号：US09718605B2
公开(公告)日：2017-08-01
申请号：US12865449
申请日：2009-01-29
CPC分类号： B65D85/50 , A01G7/045 , A01G9/16 , A01K1/0236 , B65D85/52 , Y02A40/254
摘要： The invention relates to a container for containing a living organism, a docking station for docking the container, and a transportation system comprising the container and the docking station. The container comprises a docking for docking the container to a docking station. The docking station comprises a light emitter. The container comprises light-guiding means for guiding at least part of the light emitted by the light emitter to the living organism. The effect of the measures according to the invention is that the light required for illuminating the living organism is generated by the light emitter of the docking station. As a result, no light emitters are necessary in the container according to the invention which reduces the cost of the container.
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公开(公告)号：US20120274208A1
公开(公告)日：2012-11-01
申请号：US13376294
申请日：2010-06-04
申请人： Bingzhou Chen , Guoping Zhang , Martijn Henri Richard Lankhorst , Roger Henri Denker , Jeroen Snelten , Dennis Johannes Antonius Claessens , Ludo Haenen , Jacobus Hubertus Anna Selen , Patrick Van Kooten
发明人： Bingzhou Chen , Guoping Zhang , Martijn Henri Richard Lankhorst , Roger Henri Denker , Jeroen Snelten , Dennis Johannes Antonius Claessens , Ludo Haenen , Jacobus Hubertus Anna Selen , Patrick Van Kooten
IPC分类号： H01Q1/22
CPC分类号： H01Q1/44 , F21K9/232 , F21K9/233 , F21V3/00 , F21V23/0435 , F21V23/045 , F21V29/85 , F21Y2113/13 , F21Y2115/10 , H01Q1/38 , H01Q1/52 , H01Q3/36 , H01Q9/42 , H05B33/0803 , H05B33/0845 , H05B37/0272
摘要： A lighting device, such as a replacement lighting device, comprising a light source (LS), e.g. LEDs, for producing light along an optical axis (OA). A heat sink (HS) made of a material with an electrical resistivity being less than 0.01 Ωm, e.g. a metallic heat sink being a part of the housing, transports heat away from the light source (LS). A Radio Frequency (RF) communication circuit (CC) connected to an an antenna (A) serves to enable RF signal communication, e.g. to control the device via a remote control. Metallic components, including the heat sink (HS), having an extension larger than 1/10 of a wavelength of the RF signal are arranged below a virtual plane (VP) drawn orthogonal to the optical axis (OA) and going through the antenna (A). Hereby a compact device can be obtained, and still a satisfying RF radiation pattern can be obtained. The antenna can be a wire antenna or a PCB antenna, e.g. a PIFA or a IFA type antenna. In a special embodiment the antenna is formed on a ring-shaped PCB with a central hole allowing passage of light from the light source. Preferably, the antenna is positioned at least 2 mm in front of the heat sink (HS).
摘要翻译： 一种照明装置，例如替换照明装置，包括光源（LS），例如， LED用于沿光轴（OA）产生光。 由电阻率小于0.01Ω的材料制成的散热器（HS），例如， 作为壳体的一部分的金属散热器将热量从光源（LS）输送。 连接到天线（A）的射频（RF）通信电路（CC）用于使能RF信号通信。 通过遥控器控制设备。 包括具有大于RF信号的波长的1/10的扩展的散热器（HS）的金属部件布置在垂直于光轴（OA）并穿过天线的虚拟平面（VP）的下方 一个）。 由此，可以获得紧凑的装置，并且仍然可以获得满意的RF辐射图案。 天线可以是有线天线或PCB天线，例如 PIFA或IFA型天线。 在特殊实施例中，天线形成在环形PCB上，中心孔允许来自光源的光通过。 优选地，天线位于散热器（HS）的前方至少2mm处。
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公开(公告)号：US20120098516A1
公开(公告)日：2012-04-26
申请号：US13380587
申请日：2010-06-22
申请人： Jeroen Snelten
发明人： Jeroen Snelten
CPC分类号： H05B33/0815 , H05B41/3924 , Y02B20/347 , Y10T307/50
摘要： A current correction circuit (200) has an input (201) and comprises: −a first controllable current source (220) having an input connected to the circuit input for drawing a first current (I 220) from said circuit input; —a differentiator (210) having an input coupled to the circuit input and having an output coupled to the first current source; and/or—a second controllable current source (240) having an input connected to the circuit input for drawing a second current (I 240) from said circuit input; —a voltage comparator (230) having a first input coupled to the circuit input (201), having a second input coupled to receive a reference signal (Vref), and having an output coupled to the second current source. The circuit is responsive to voltage changes by drawing first current pulses (221) from said circuit input, and/or to low voltages by drawing second current pulses (241) from said circuit input.
摘要翻译： 电流校正电路（200）具有输入（201），包括： - 第一可控电流源（220），其具有连接到电路输入端的输入端，用于从所述电路输入端抽出第一电流（I 220） - 微分器（210），其具有耦合到所述电路输入并具有耦合到所述第一电流源的输出的输入; 和/或第二可控电流源（240），其具有连接到所述电路输入端的输入端，用于从所述电路输入端抽出第二电流（I 240） - 具有耦合到所述电路输入（201）的第一输入的电压比较器（230），具有耦合以接收参考信号（Vref）的第二输入，以及耦合到所述第二电流源的输出。 该电路通过从所述电路输入抽出第一电流脉冲（221）和/或通过从所述电路输入引出第二电流脉冲（241）来响应于电压变化。
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8.发明申请SELF-OSCILLATING SWITCH CIRCUIT AND A DRIVER CIRCUIT COMPRISING SUCH A SWITCH CIRCUIT 有权自激振荡电路和包含这种开关电路的驱动电路公开(公告)号：US20100127641A1
公开(公告)日：2010-05-27
申请号：US12596858
申请日：2008-04-22
申请人： Jeroen Snelten
发明人： Jeroen Snelten
CPC分类号： H02M3/1563 , H05B33/0818 , Y02B20/346
摘要： A self-oscillating switch circuit is configured for use in a switching DC-DC converter (switched mode power supply (SMPS)). The self-oscillating switch circuit comprises an input terminal (Tin1, Tin2) for receiving power from a power supply (51) and an output terminal (Tont1, Tont2) for supplying power to a load. The load may be a high-power LED, for example. The self-oscillating switch circuit further comprises a power switch semi-> conductor device (Q1) having a control terminal and a control semi-conductor device (Q2) coupled to the power switch semi-conductor device. The power switch semi-conductor device is configured for controlling a load current between the input terminal and the output terminal and the control semi-conductor device is configured for supplying a control signal to the control terminal of the power switch semi-conductor device for controlling switching of the power switch semi-conductor device. In order to reduce a power loss in the power switch semi-conductor device, a gain semi-conductor device (Q4) is coupled between the power switch semi-conductor device and the control semi-conductor device for amplifying the control signal. Due to the amplification of the control signal, switching of the power switch semi-conductor device is performed faster, thereby reducing power dissipation due to a load current flowing through the power switch semi-conductor device, while the base-emitter voltage of the power switch transistor is below a base emitter voltage corresponding to the peak current at that time.
摘要翻译： 自激振荡开关电路被配置为用于开关DC-DC转换器（开关模式电源（SMPS））。 自振荡开关电路包括用于从电源（51）接收电力的输入端子（Tin1，Tin2）和用于向负载供电的输出端子（Tont1，Tont2）。 负载可以是例如大功率LED。 自振荡开关电路还包括具有控制端子的电源开关半导体器件（Q1）和耦合到功率开关半导体器件的控制半导体器件（Q2）。 电源开关半导体器件被配置为用于控制输入端子和输出端子之间的负载电流，并且控制半导体器件被配置为将控制信号提供给用于控制的电力开关半导体器件的控制端子 切换电源开关半导体器件。 为了降低功率开关半导体器件的功率损耗，增益半导体器件（Q4）耦合在功率开关半导体器件和控制半导体器件之间，用于放大控制信号。 由于控制信号的放大，功率开关半导体器件的切换更快，从而减少了由于负载电流流过功率开关半导体器件而导致的功耗，同时功率的基极 - 发射极电压 开关晶体管低于对应于此时的峰值电流的基极发射极电压。
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9.发明授权公开(公告)号：US06426624B1
公开(公告)日：2002-07-30
申请号：US09684302
申请日：2000-10-06
申请人： Jeroen Snelten
发明人： Jeroen Snelten
IPC分类号： G01V300
CPC分类号： G01R33/3415 , G01R33/34076 , G01R33/341
摘要： MRI apparatus with a magnet assembly for generating a uniform magnetic field in a measuring volume, wherein a combination of at least two magnetic coils is arranged adjacent an object to be examined in order to detect the radio frequency radiation emanating from the object. The combination may include, for example one birdcage coil (40) and one surface coil (45). The coils are arranged relative to one another and to the magnetic field in such a manner that their areas of sensitivity overlap and that their longitudinal conductors (42 and 47, respectively) extend parallel to the uniform magnetic field B0 and one in the prolongation of the other. It is demonstrated that the difference between the signal-to-noise ratios of the coils causes image degradation due to the disruption (51) of the sensitivity of the coil assembly in the zone between the coils. According to the invention, the end of the longitudinal conductor (49) of the coil having the highest signal-to-noise ratio (45) is bent away from its original plane, in the direction away from the object to be examined, in order to reduce the sensitivity disruption (51) of the coil assembly.
摘要翻译： 具有用于在测量体积中产生均匀磁场的磁体组件的MRI装置，其中至少两个磁性线圈的组合布置成与被检查物体相邻，以便检测从物体发出的射频辐射。 组合可以包括例如一个鸟笼线圈（40）和一个表面线圈（45）。 线圈相对于彼此和磁场被布置成使得它们的灵敏区域重叠，并且它们的纵向导体（42和47分别）平行于均匀磁场B0延伸，而在延长的 其他。 证明线圈的信噪比之间的差异导致由于线圈组件在线圈之间的区域的灵敏度的破坏（51）而引起的图像劣化。 根据本发明，具有最高信噪比（45）的线圈的纵向导体（49）的端部沿着远离被检查物体的方向从原始平面弯曲，按顺序 以减少线圈组件的灵敏度破坏（51）。
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公开(公告)号：US09184497B2
公开(公告)日：2015-11-10
申请号：US13376294
申请日：2010-06-04
申请人： Bingzhou Chen , Guoping Zhang , Martijn Henri Richard Lankhorst , Roger Henri Denker , Jeroen Snelten , Dennis Johannes Antonius Claessens , Ludo Haenen , Jacobus Hubertus Anna Selen , Patrick Van Kooten
发明人： Bingzhou Chen , Guoping Zhang , Martijn Henri Richard Lankhorst , Roger Henri Denker , Jeroen Snelten , Dennis Johannes Antonius Claessens , Ludo Haenen , Jacobus Hubertus Anna Selen , Patrick Van Kooten
IPC分类号： H01Q1/26 , H01Q1/44 , H01Q1/38 , H01Q1/52 , H01Q3/36 , H01Q9/42 , H05B33/08 , H05B37/02 , F21V23/04 , F21Y101/02 , F21K99/00 , F21V3/00 , F21Y113/00 , F21V29/85
CPC分类号： H01Q1/44 , F21K9/232 , F21K9/233 , F21V3/00 , F21V23/0435 , F21V23/045 , F21V29/85 , F21Y2113/13 , F21Y2115/10 , H01Q1/38 , H01Q1/52 , H01Q3/36 , H01Q9/42 , H05B33/0803 , H05B33/0845 , H05B37/0272
摘要： A lighting device, such as a replacement lighting device, comprising a light source (LS), e.g. LEDs, for producing light along an optical axis (OA). A heat sink (HS) made of a material with an electrical resistivity being less than 0.01 Ωm, e.g. a metallic heat sink being a part of the housing, transports heat away from the light source (LS). A Radio Frequency (RF) communication circuit (CC) connected to an antenna (A) serves to enable RF signal communication, e.g. to control the device via a remote control. Metallic components, including the heat sink (HS), having an extension larger than 1/10 of a wavelength of the RF signal are arranged below a virtual plane (VP) drawn orthogonal to the optical axis (OA) and going through the antenna (A). Hereby a compact device can be obtained, and still a satisfying RF radiation pattern can be obtained. The antenna can be a wire antenna or a PCB antenna, e.g. a PIFA or a IFA type antenna. In a special embodiment the antenna is formed on a ring-shaped PCB with a central hole allowing passage of light from the light source. Preferably, the antenna is positioned at least 2 mm in front of the heat sink (HS).
摘要翻译： 一种照明装置，例如替换照明装置，包括光源（LS），例如， LED用于沿光轴（OA）产生光。 由电阻率小于0.01Ω的材料制成的散热器（HS），例如， 作为壳体的一部分的金属散热器将热量从光源（LS）输送。 连接到天线（A）的射频（RF）通信电路（CC）用于实现RF信号通信，例如， 通过遥控器控制设备。 包括具有大于RF信号的波长的1/10的扩展的散热器（HS）的金属部件布置在垂直于光轴（OA）并穿过天线的虚拟平面（VP）的下方 一个）。 由此，可以获得紧凑的装置，并且仍然可以获得满意的RF辐射图案。 天线可以是有线天线或PCB天线，例如 PIFA或IFA型天线。 在特殊实施例中，天线形成在环形PCB上，中心孔允许来自光源的光通过。 优选地，天线位于散热器（HS）的前方至少2mm处。
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