公开(公告)号：US07474064B2

公开(公告)日：2009-01-06

申请号：US11832644

申请日：2007-08-01

申请人： Ting-Cheng Lai ,  Masakazu Ushijima

发明人： Ting-Cheng Lai ,  Masakazu Ushijima

IPC分类号： G05F1/00

CPC分类号： H05B41/2825 ,  H05B41/392 ,  Y10S315/07

摘要： A lamp driving circuit includes a step-up transformer, a detector, and a controller. The step-up transformer includes a primary winding, and a secondary winding configured to cooperate with a discharge lamp to form a tank circuit that generates a tank current. The detector is adapted for detecting current magnitude of current flowing through the discharge lamp, and outputs a detecting signal corresponding to the current magnitude. The controller receives the detecting signal from the detector, and generates a drive signal for driving the step-up transformer. The controller includes a capacitor, and configures a waveform of the drive signal by controlling charging of the capacitor based on a calculation value that corresponds to a frequency of the drive signal, a start-setting value, and a difference between the detecting signal and a current-setting signal.

摘要翻译： 灯驱动电路包括升压变压器，检测器和控制器。 升压变压器包括初级绕组和次级绕组，其被配置为与放电灯协作以形成产生罐电流的储能电路。 检测器适用于检测流过放电灯的电流的电流大小，并输出对应于电流大小的检测信号。 控制器从检测器接收检测信号，并产生用于驱动升压变压器的驱动信号。 控制器包括电容器，并且通过基于与驱动信号的频率对应的计算值，开始设定值以及检测信号与a的值之间的差来控制电容器的充电来配置驱动信号的波形 电流设定信号。

公开(公告)号：US07605544B2

公开(公告)日：2009-10-20

申请号：US11899509

申请日：2007-09-06

申请人： Masakazu Ushijima ,  Ting-Cheng Lai ,  Wan-Lu Lin ,  Te-Min Liu ,  Chien-Fu Ho

发明人： Masakazu Ushijima ,  Ting-Cheng Lai ,  Wan-Lu Lin ,  Te-Min Liu ,  Chien-Fu Ho

IPC分类号： H05B41/16

CPC分类号： H05B41/2822

摘要： A current balancing circuit for first and second lamp sets includes a step-up transformer and a current balancer. The step-up transformer is adapted to be coupled to a power supply for receiving an alternating-current source power, and for generating a drive signal by varying magnitude of the alternating-current source power. The step-up transformer is further adapted to be coupled to the first and second lamp sets for providing the drive signal thereto. The current balancer includes first and second shunt transformers. Each of the first and second shunt transformers includes primary and secondary windings that correspond to each other in number of turns thereof. The first and second shunt transformers are adapted to be coupled to corresponding discharge lamps of the first lamp set. The current balancer is adapted to mirror current flowing through the first and second shunt transformers to the second lamp set.

摘要翻译： 用于第一和第二灯组的电流平衡电路包括升压变压器和电流平衡器。 升压变压器适于耦合到用于接收交流源功率的电源，并且用于通过改变交流电源功率的大小来产生驱动信号。 升压变压器还适于耦合到第一和第二灯组，以向其提供驱动信号。 目前的平衡器包括第一和第二分流变压器。 第一和第二分流变压器中的每一个包括在匝数彼此对应的初级和次级绕组。 第一和第二分流变压器适于耦合到第一灯组的相应放电灯。 当前的平衡器适于将流过第一和第二分流变压器的电流镜像到第二灯组。

公开(公告)号：US20080061710A1

公开(公告)日：2008-03-13

申请号：US11899509

申请日：2007-09-06

申请人： Masakazu Ushijima ,  Ting-Cheng Lai ,  Wan-Lu Lin ,  Te-Min Liu ,  Chien-Fu Ho

发明人： Masakazu Ushijima ,  Ting-Cheng Lai ,  Wan-Lu Lin ,  Te-Min Liu ,  Chien-Fu Ho

IPC分类号： H05B41/24

CPC分类号： H05B41/2822

摘要： A current balancing circuit for first and second lamp sets includes a step-up transformer and a current balancer. The step-up transformer is adapted to be coupled to a power supply for receiving an alternating-current source power, and for generating a drive signal by varying magnitude of the alternating-current source power. The step-up transformer is further adapted to be coupled to the first and second lamp sets for providing the drive signal thereto. The current balancer includes first and second shunt transformers. Each of the first and second shunt transformers includes primary and secondary windings that correspond to each other in number of turns thereof. The first and second shunt transformers are adapted to be coupled to corresponding discharge lamps of the first lamp set. The current balancer is adapted to mirror current flowing through the first and second shunt transformers to the second lamp set.

摘要翻译： 用于第一和第二灯组的电流平衡电路包括升压变压器和电流平衡器。 升压变压器适于耦合到用于接收交流源功率的电源，并且用于通过改变交流电源功率的大小来产生驱动信号。 升压变压器还适于耦合到第一和第二灯组，以向其提供驱动信号。 目前的平衡器包括第一和第二分流变压器。 第一和第二分流变压器中的每一个包括在匝数彼此对应的初级和次级绕组。 第一和第二分流变压器适于耦合到第一灯组的相应放电灯。 当前的平衡器适于将流过第一和第二分流变压器的电流镜像到第二灯组。

公开(公告)号：US20080030150A1

公开(公告)日：2008-02-07

申请号：US11832644

申请日：2007-08-01

申请人： Ting-Cheng Lai ,  Masakazu Ushijima

发明人： Ting-Cheng Lai ,  Masakazu Ushijima

IPC分类号： H05B41/36

CPC分类号： H05B41/2825 ,  H05B41/392 ,  Y10S315/07

摘要： A lamp driving circuit includes a step-up transformer, a detector, and a controller. The step-up transformer includes a primary winding, and a secondary winding adapted to cooperate with a discharge lamp to form a tank circuit that generates a tank current. The detector is adapted for detecting current magnitude of current flowing through the discharge lamp, and outputs a detecting signal corresponding to the current magnitude. The controller receives the detecting signal from the detector, and generates a drive signal for driving the step-up transformer. The controller includes a capacitor, and configures a waveform of the drive signal by controlling charging of the capacitor based on a calculation value that corresponds to a frequency of the drive signal, a start-setting value, and a difference between the detecting signal and a current-setting signal.

摘要翻译： 灯驱动电路包括升压变压器，检测器和控制器。 升压变压器包括初级绕组和适于与放电灯配合的次级绕组，以形成产生罐电流的储能电路。 检测器适用于检测流过放电灯的电流的电流大小，并输出对应于电流大小的检测信号。 控制器从检测器接收检测信号，并产生用于驱动升压变压器的驱动信号。 控制器包括电容器，并且通过基于与驱动信号的频率对应的计算值，开始设定值以及检测信号与a的值之间的差来控制电容器的充电来配置驱动信号的波形 电流设定信号。

公开(公告)号：US20130170253A1

公开(公告)日：2013-07-04

申请号：US13728618

申请日：2012-12-27

申请人： Masakazu Ushijima

发明人： Masakazu Ushijima

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M1/425 ,  H02M7/155 ,  H02M2001/0006 ,  Y02B70/126

摘要： An auxiliary power generation circuit adopted for use on a filter power circuit includes a first voltage stabilization capacitor and a second voltage stabilization capacitor connecting to the first voltage stabilization capacitor via a first diode. The first and second voltage stabilization capacitors form a capacitor voltage division circuit. The first voltage stabilization capacitor and first diode are bridged by a first connection point which is connected to a short circuit element and a second diode with a set on current opposite to the short circuit element. The short circuit element has a control end connecting to a first Zener diode which is connected to a first resistor with a desired resistance. The first resistor is connected to a second connection point between the second voltage stabilization capacitor and first diode.

摘要翻译： 采用在滤波电源电路上使用的辅助发电电路包括经由第一二极管连接到第一稳压电容器的第一稳压电容器和第二稳压电容器。 第一和第二稳压电容器形成电容器分压电路。 第一稳压电容器和第一二极管由连接到短路元件的第一连接点和与短路元件相对的电流设定的第二二极管桥接。 短路元件具有连接到第一齐纳二极管的控制端，该第一齐纳二极管连接到具有所需电阻的第一电阻器。 第一电阻器连接到第二稳压电容器与第一二极管之间的第二连接点。

公开(公告)号：US08102681B2

公开(公告)日：2012-01-24

申请号：US12394877

申请日：2009-02-27

申请人： Masakazu Ushijima

发明人： Masakazu Ushijima

IPC分类号： H02M3/335

CPC分类号： H01F38/10 ,  G01R15/185 ,  H01F3/10 ,  H01F27/38 ,  H01F2038/026

摘要： Provided is a transformer, comprising a first winding and a second winding that interlink with a main magnetic flux; and a third winding that interlinks with a magnetic flux leakage interlinking with only one of the first winding and the second winding.

摘要翻译： 提供一种变压器，包括与主磁通相互连接的第一绕组和第二绕组; 以及第三绕组，其与仅与第一绕组和第二绕组中的一个相互连接的磁通泄漏相互连接。

公开(公告)号：US07548028B2

公开(公告)日：2009-06-16

申请号：US11330328

申请日：2006-01-12

申请人： Masakazu Ushijima

发明人： Masakazu Ushijima

IPC分类号： H05B37/00

CPC分类号： H02M7/53838 ,  H05B41/2821 ,  Y02B70/1441 ,  Y10S315/05

摘要： A high conversion efficiency inverter circuit by providing the current-mode resonant type efficient in using a power source.A current-mode resonant inverter circuit comprises a step-up transformer; the secondary winding side of the step-up transformer is composed of a resonant circuit between leakage inductance of the step-up transformer secondary winding and a capacitive component present in the secondary side circuit; one end of the step-up transformer primary winding is connected to the power source side; the other end of the primary winding is connected to a switched snubber circuit through the primary winding of a current transformer; the switched-snubber circuit comprises a pair of transistors different from each other in polarity; bases or gate of the pair of transistors, connected to each other, are connected to the secondary winding of the current transformer; either collector of the pair of transistors is connected to the primary winding of the current transformer; the other collector of the transistor is connected to the current transformer primary winding through a capacitor.

摘要翻译： 一种高转换效率的逆变器电路，通过在使用电源时提供有效的电流模式谐振型。 电流模式谐振逆变器电路包括升压变压器; 升压变压器的次级绕组侧由升压变压器次级绕组的漏电感和次级侧电路中存在的电容分量之间的谐振电路构成; 升压变压器初级绕组的一端连接到电源侧; 初级绕组的另一端通过电流互感器的初级绕组连接到开关缓冲电路; 开关缓冲电路包括极性彼此不同的一对晶体管; 彼此连接的一对晶体管的基极或栅极连接到电流互感器的次级绕组; 该对晶体管的一个集电极连接到电流互感器的初级绕组; 晶体管的另一个集电极通过电容器连接到电流互感器初级绕组。

公开(公告)号：US20080231212A1

公开(公告)日：2008-09-25

申请号：US12153669

申请日：2008-05-22

申请人： Masakazu Ushijima ,  Daisuke Taido

发明人： Masakazu Ushijima ,  Daisuke Taido

IPC分类号： H05B41/36

CPC分类号： H05B41/2827

摘要： Disclosed is a low-cost parallel lighting system for discharge lamps for a surface light source, which reduces nonuniform brightness and static noise, and fulfills a requirement that lamp currents of individual cold-cathode fluorescent lamps should be uniform and stabilized. In a surface light source system having multiple discharge lamps, there is a module which lights the discharge lamps in parallel and whose input terminal and electrodes on an opposite side to that side of the discharge lamps which is connected to the module are driven by voltage waveforms different in phase by 180 degrees from each other, wherein an input terminal of an opposite phase of the surface light source system is connected to an inverter circuit having outputs of opposite phases via a single shunt transformer in such a way as to cancel out magnetic fluxes generated by currents respectively flowing in windings of the shunt transformer, whereby the resonance frequency of the inverter circuit having outputs of opposite phases is matched to balance the outputs.

公开(公告)号：US20060193152A1

公开(公告)日：2006-08-31

申请号：US11330328

申请日：2006-01-12

申请人： Masakazu Ushijima

发明人： Masakazu Ushijima

IPC分类号： H02M7/00

CPC分类号： H02M7/53838 ,  H05B41/2821 ,  Y02B70/1441 ,  Y10S315/05

摘要： A high conversion efficiency inverter circuit by providing the current-mode resonant type efficient in using a power source. A current-mode resonant inverter circuit comprises a step-up transformer; the secondary winding side of the step-up transformer is composed of a resonant circuit between leakage inductance of the step-up transformer secondary winding and a capacitive component present in the secondary side circuit; one end of the step-up transformer primary winding is connected to the power source side; the other end of the primary winding is connected to a switched snubber circuit through the primary winding of a current transformer; the switched-snubber circuit comprises a pair of transistors different from each other in polarity; bases or gate of the pair of transistors, connected to each other, are connected to the secondary winding of the current transformer; either collector of the pair of transistors is connected to the primary winding of the current transformer; the other collector of the transistor is connected to the current transformer primary winding through a capacitor.

公开(公告)号：US20060152174A1

公开(公告)日：2006-07-13

申请号：US11329068

申请日：2006-01-11

申请人： Masakazu Ushijima

发明人： Masakazu Ushijima

IPC分类号： H05B41/36

CPC分类号： H05B41/282 ,  H02M7/53832 ,  H05B41/2825 ,  Y02B20/183 ,  Y02B20/185 ,  Y02B70/1441

摘要： A highly stable current-mode resonant inverter circuit by detecting resonance current in the secondary side circuit. A current-mode resonant inverter circuit comprises a step-up transformer; a side of a secondary winding of the step-up transformer composes a resonant circuit between leakage inductance of the step-up transformer secondary winding and a capacitive component present in the secondary side circuit; the current-mode resonant inverter circuit has current detecting method for detecting an auxiliary resonance capacitance included in a capacitive component in the step-up transformer secondary side circuit and a current flowing through the auxiliary capacitance and switching method for determining switching timing in response to an output from the current detecting method; the switching method drives a primary winding of the step-up transformer; the capacitive component including leakage inductance of the step-up transformer secondary winding and the auxiliary resonance capacitance composes a series resonant circuit; and the current-mode resonant inverter circuit oscillates self-excitedly at a resonance frequency of the series resonant circuit.

摘要翻译： 通过检测次级侧电路中的谐振电流来实现高度稳定的电流模式谐振逆变器电路。 电流模式谐振逆变器电路包括升压变压器; 升压变压器的次级绕组的一侧构成了升压变压器次级绕组的漏电感和次级侧电路中存在的电容分量之间的谐振电路; 电流模式谐振逆变器电路具有用于检测包括在升压变压器次级侧电路中的电容分量中的辅助谐振电容和流过辅助电容的电流的电流检测方法以及响应于辅助电容确定切换定时的切换方法 从当前检测方法输出; 开关方式驱动升压变压器的初级绕组; 包括升压变压器次级绕组的漏电感和辅助谐振电容的电容分量构成串联谐振电路; 并且电流模式谐振逆变器电路以串联谐振电路的谐振频率自激振荡。