专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6134133A Piezoelectric transformer inverter 有权
标题翻译：压电变压器
公开(公告)号：US6134133A
公开(公告)日：2000-10-17
申请号：US389286
申请日：1999-09-02
申请人： Takashi Noma , Ichiro Yamawaki , Yasuyuki Morishima
发明人： Takashi Noma , Ichiro Yamawaki , Yasuyuki Morishima
IPC分类号： H02M7/48 , H02M7/538 , H02M7/539 , H05B41/24
CPC分类号： H02M7/53806
摘要： A piezoelectric transformer inverter includes an inverter unit and a step-down chopper unit. The inverter unit includes a ceramic piezoelectric transformer whose secondary terminal is to be connected to a fluorescent tube, a drive unit which is connected to a primary terminal of the ceramic piezoelectric transformer, and an inverter control circuit for controlling luminance of the fluorescent tube to a desired value. The step-down chopper unit includes a switching device which is disposed on the side where the voltage of the inverter unit is input, a free wheeling device connected between the switching device and a reference potential, and a PWM feedback control circuit for providing a feedback control to maintain an average voltage of the rectangular-wave voltage of the switching device constant. In the piezoelectric transformer inverter, even when the feedback control by the PWM feedback control circuit is impossible, the on-duty of the chopper unit is restricted so that it is not greater than a given amount.
摘要翻译：压电变压器逆变器包括逆变器单元和降压斩波单元。逆变器单元包括将二次端子连接到荧光管的陶瓷压电变压器，连接到陶瓷压电变压器的初级端子的驱动单元和用于将荧光管的亮度控制为所需值。降压斩波器单元包括设置在输入逆变器单元的电压的一侧的开关装置，连接在开关装置和参考电位之间的续流装置，以及用于提供反馈的PWM反馈控制电路控制以保持开关装置的矩形波电压的平均电压恒定。在压电变压器逆变器中，即使不能通过PWM反馈控制电路进行反馈控制，限制了斩波器单元的占空比，使其不大于给定量。

2. 发明授权

US06320301B1 Piezoelectric-transformer inverter 有权
标题翻译：压电变压器逆变器
公开(公告)号：US06320301B1
公开(公告)日：2001-11-20
申请号：US09291730
申请日：1999-04-14
申请人： Takashi Noma , Ken Takakura , Yasuyuki Morishima
发明人： Takashi Noma , Ken Takakura , Yasuyuki Morishima
IPC分类号： H01L4104
CPC分类号： H01L41/044 , H01L41/107 , H05B41/2822 , H05B41/2824
摘要： A piezoelectric-transformer inverter includes a piezoelectric transformer for supplying a transformed voltage to a load connected to a secondary electrode thereof. A first coil and a first transistor are connected to one primary electrode of the piezoelectric transformer, and a second coil and a second transistor are connected to the other primary electrode of the piezoelectric transformer. The first and second transistors are alternately turned on and off such that the phase of the voltage applied between the primary electrodes is reversed cyclically. The operation frequency is controlled such that an AC current flowing through the load is maintained at a predetermined level. The piezoelectric transformer has a piezoelectric substrate. In a first half region of the piezoelectric substrate, a plurality of electrode films are layered in order to form the primary electrodes. The secondary electrode is formed on an end surface of the piezoelectric substrate opposite to the primary electrodes. The piezoelectric substrate is polarized in a first direction in the first half region where the primary electrodes exist and is polarized in a second direction different from the first direction in a second half region where the secondary electrode exists. The piezoelectric transformer operates in a half wavelength mode.
摘要翻译：压电变压器逆变器包括用于向连接到其二次电极的负载提供变换电压的压电变压器。第一线圈和第一晶体管连接到压电变压器的一个主电极，第二线圈和第二晶体管连接到压电变压器的另一个主电极。第一和第二晶体管被交替地导通和截止，使得施加在主电极之间的电压的相位被循环地反转。控制工作频率使得流过负载的交流电流保持在预定水平。压电变压器具有压电基板。在压电基板的第一半区域中，为了形成初级电极而层叠多个电极膜。二次电极形成在与主电极相对的压电基板的端面上。压电基板在存在第一电极的第一半区域中沿第一方向极化，并且在第二半导体存在的第二半区域中在与第一方向不同的第二方向上极化。压电变压器工作在半波长模式。

3. 发明授权

US06184631B2 Piezoelectric inverter 失效
标题翻译：压电式逆变器
公开(公告)号：US06184631B2
公开(公告)日：2001-02-06
申请号：US09526961
申请日：2000-03-16
申请人： Takashi Noma , Yasuyuki Morishima
发明人： Takashi Noma , Yasuyuki Morishima
IPC分类号： H05B3702
CPC分类号： H05B41/2822 , H05B41/3925
摘要： A piezoelectric inverter is disclosed. In the piezoelectric inverter, an input voltage controller, having a switching transistor and a current circulatingelement, converts an input voltage into a rectangular pulse alternating-current voltage. A piezoelectric transformer driver, having an inductive element, outputs an alternating-current voltage having a substantially constant frequency lower than the frequency of the alternating-current voltage output from the input voltage controller. A load current detect or detects a load current flowing through a discharge tube connected to a piezoelectric transformer. A duty factor controller controls the duty factor of the rectangular pulse of the input voltage controller in response to the output of the load current detector so that the load current coincides with a substantially constant target current value. The piezoelectric inverter thus controls the mean voltage of the alternating-current voltage applied to the piezoelectric transformer.
摘要翻译：公开了一种压电逆变器。在压电逆变器中，具有开关晶体管和电流循环元件的输入电压控制器将输入电压转换为矩形脉冲交流电压。具有感应元件的压电变压器驱动器输出具有比从输入电压控制器输出的交流电压的频率低的基本上恒定的频率的交流电压。负载电流检测或检测流过连接到压电变压器的放电管的负载电流。负载因子控制器响应于负载电流检测器的输出控制输入电压控制器的矩形脉冲的占空因数，使得负载电流与基本上恒定的目标电流值一致。因此，压电变换器控制施加到压电变压器的交流电压的平均电压。

4. 发明授权

US6013969A Piezoelectric transformer inverter 失效
标题翻译：压电变压器
公开(公告)号：US6013969A
公开(公告)日：2000-01-11
申请号：US281683
申请日：1999-03-30
申请人： Takashi Noma , Yasuyuki Morishima
发明人： Takashi Noma , Yasuyuki Morishima
IPC分类号： H02M3/24 , H02M7/537 , H02M7/538 , H05B41/24 , H05B41/282 , H05B41/392 , H01L41/08
CPC分类号： H02M7/48 , H05B41/2822
摘要： A boosting drive circuit includes first and second series combinations of a coil and a transistor. The two series combination of a coil and a transistor are connected in parallel. The middle points between the coils and the transistors are connected to respective primary electrodes of a piezoelectric transformer. The transistors are alternately operated with a two-phase drive circuit. Thus, a boosting drive circuit providing for the class "semi-E" operation is formed. A driving voltage control circuit controls an average voltage applied to the input terminal of the boosting drive circuit to ensure that current on the secondary electrode side of the piezoelectric transformer is controlled at a predetermined value is provided between the input power supply and the boosting drive circuit. A driving frequency control circuit changes the driving frequency of the transistors in the boosting drive circuit in such a manner that the phase difference between an alternating voltage applied to the primary electrodes of the piezoelectric transformer and an alternating current flowing in the load is controlled at a predetermined value.
摘要翻译：升压驱动电路包括线圈和晶体管的第一和第二串联组合。线圈和晶体管的两个串联组合并联。线圈和晶体管之间的中间点连接到压电变压器的主要电极。晶体管与两相驱动电路交替工作。因此，形成提供“半-E”类操作的升压驱动电路。驱动电压控制电路控制施加到升压驱动电路的输入端子的平均电压，以确保在压电变压器的次级电极侧的电流被控制在预定值之间，在输入电源和升压驱动电路之间。驱动频率控制电路以这样的方式改变升压驱动电路中的晶体管的驱动频率，使得施加到压电变压器的主电极的交流电压与在负载中流动的交流电流之间的相位差被控制在预定值。

5. 发明授权

US06654221B2 High voltage power supply device for lighting discharge tube having protection circuit and fault protection circuit 失效
标题翻译：具有保护电路和故障保护电路的照明放电管高压电源装置
公开(公告)号：US06654221B2
公开(公告)日：2003-11-25
申请号：US09923987
申请日：2001-08-07
申请人： Takashi Noma , Yasuyuki Morishima
发明人： Takashi Noma , Yasuyuki Morishima
IPC分类号： H02H904
CPC分类号： H05B41/2855
摘要： Current flowing through a cold cathode tube is detected and converted to a voltage with a resistor, and is fed to a tube current control circuit. The tube current control circuit drives a drive circuit to control a voltage applied to a piezoelectric transformer. Current from a constant-current source is used to charge a fault protection capacitor. A transistor is allowed to conduct while current flows through the cold cathode tube so that a voltage is developed in a resistor, and thereby, an electric charge is prevented from being stored in the fault protection capacitor, thereby stopping the operation of a fault protection circuit.
摘要翻译：检测流过冷阴极管的电流并将其转换成具有电阻的电压，并将其馈送到管电流控制电路。管电流控制电路驱动驱动电路来控制施加到压电变压器的电压。来自恒流源的电流用于对故障保护电容器充电。允许晶体管导通，同时电流流过冷阴极管，使得在电阻器中产生电压，从而防止电荷存储在故障保护电容器中，从而停止故障保护电路的操作。

6. 发明授权

US06229720B1 Piezoelectric transformer inverter 失效
标题翻译：压电变压器
公开(公告)号：US06229720B1
公开(公告)日：2001-05-08
申请号：US09535892
申请日：2000-03-27
申请人： Takashi Noma , Yasuyuki Morishima
发明人： Takashi Noma , Yasuyuki Morishima
IPC分类号： H02M112
CPC分类号： H05B41/2822 , H02M7/537 , H02M2001/007 , H05B41/3925
摘要： A piezoelectric transformer inverter can suppress ripples generated by the oscillations of a transformer, and can reduce the possibility of occurrence of beats in the inverter. In this piezoelectric transformer inverter, a switching element is disposed at a stage before an inverter circuit driving a discharge tube, and the switching element is switched on and off by switching signals from a chopper-duty control unit. Then, an input voltage is converted into a rectangular-wave voltage having a chopper circuit frequency to be supplied to the inverter circuit, and a frequency of n times a driving frequency of the inverter circuit and a chopper frequency of the chopper circuit are set in such a manner that these two frequencies are not close to each other.
摘要翻译：压电变压器逆变器可以抑制由变压器的振荡产生的波纹，并且可以减少逆变器中发生节拍的可能性。在该压电变压器逆变器中，开关元件设置在逆变器电路驱动放电管之前的阶段，并且通过切换来自斩波器占空比控制单元的信号来接通和断开开关元件。然后，将输入电压转换为具有斩波电路频率的矩形波电压供给到逆变器电路，将逆变器电路的驱动频率的n倍的频率和斩波电路的斩波频率设定在这样的方式使得这两个频率彼此不接近。

7. 发明授权

US6144139A Piezoelectric transformer inverter 失效
标题翻译：压电变压器
公开(公告)号：US6144139A
公开(公告)日：2000-11-07
申请号：US409807
申请日：1999-09-30
申请人： Takashi Noma , Yasuyuki Morishima , Hidehiko Sugimoto
发明人： Takashi Noma , Yasuyuki Morishima , Hidehiko Sugimoto
IPC分类号： H02M3/24 , H02M7/48 , H05B41/24 , H05B41/282 , H05B41/392 , H01L41/08
CPC分类号： H05B41/2822 , H05B41/2827 , H05B41/2828 , H05B41/3925
摘要： A piezoelectric transformer inverter includes: a piezoelectric transformer, one of whose primary electrodes is grounded, which performs voltage conversion of alternating voltage or direct current voltage applied between the primary electrodes and supplies the converted voltage to a load connected to a secondary electrode; a drive unit for supplying alternating voltage or direct current voltage between the primary electrodes of the piezoelectric transformer; a low-pass type resonance circuit unit inserted between the output of the drive unit and the primary electrodes of the piezoelectric transformer; a duty control unit for controlling ON-Duty of the drive unit so that a value of current flowing into the load coincides with a targeted current value; a phase-difference detection unit for detecting a phase difference between the input voltage and the output voltage of the piezoelectric transformer; and a frequency control unit for controlling a driving frequency of the drive unit.
摘要翻译：一种压电变压器逆变器包括：压电变压器，其一个主电极接地，其施加在主电极之间的交流电压或直流电压的电压转换，并将转换的电压提供给连接到次级电极的负载; 用于在压电变压器的主电极之间提供交流电压或直流电压的驱动单元; 插入在驱动单元的输出端和压电变压器的主电极之间的低通型谐振电路单元; 负责控制单元，用于控制驱动单元的占空比，使得流入负载的电流值与目标电流值一致; 相位差检测单元，用于检测压电变压器的输入电压和输出电压之间的相位差; 以及用于控制驱动单元的驱动频率的频率控制单元。

8. 发明授权

US6153962A Piezoelectric transformer inverter 失效
标题翻译：压电变压器
公开(公告)号：US6153962A
公开(公告)日：2000-11-28
申请号：US399279
申请日：1999-09-17
申请人： Takashi Noma , Kyoji Toshinari , Yasuyuki Morishima
发明人： Takashi Noma , Kyoji Toshinari , Yasuyuki Morishima
IPC分类号： H05B41/282 , H05B41/392 , H01L41/08
CPC分类号： H05B41/2822 , H05B41/2824 , H05B41/3925
摘要： A piezoelectric transformer inverter comprises: a piezoelectric transformer for performing voltage conversion of alternating voltage applied between primary electrodes to supply to a load connected to a secondary electrode; a driving-frequency control unit for controlling load current during driving of the load by changing the driving frequency of the piezoelectric transformer; a chopper unit for chopping input voltage applied into the driving-frequency control unit at a frequency of two or more times as high as the driving frequency and for controlling an average input voltage applied into the driving frequency control unit by changing a duty ratio of the chopping operation; and a dimming unit for intermittently stopping the driving frequency control unit by intermittently stopping the operation of the chopper unit at a frequency smaller than the driving frequency of the piezoelectric transformer, wherein even during a period in which the dimming unit is intermittently stopping the chopper unit, signals having a duty ratio for allowing the chopper unit to perform the chopping operation to be sustained inside the chopper unit.
摘要翻译：一种压电变压器逆变器包括：压电变压器，用于对施加在主电极之间的交流电压进行电压转换，以供应到连接到次级电极的负载; 驱动频率控制单元，用于通过改变压电变压器的驱动频率来控制负载驱动期间的负载电流; 斩波单元，用于以驱动频率的两倍或更多倍的频率斩波施加到驱动频率控制单元中的输入电压，并且通过改变驱动频率控制单元的占空比来控制施加到驱动频率控制单元的平均输入电压切割操作; 以及调光单元，用于通过以比所述压电变压器的驱动频率小的频率间歇地停止所述斩波单元的操作来间歇地停止所述驱动频率控制单元，其中即使在所述调光单元间歇地停止所述斩波单元具有允许斩波器单元进行斩波器内的斩波操作的占空比的信号。

9. 发明申请

US20120269327A1 X-RAY WAVEGUIDE 审中-公开
标题翻译： X射线波形
公开(公告)号：US20120269327A1
公开(公告)日：2012-10-25
申请号：US13443054
申请日：2012-04-10
申请人： Kohei Okamoto , Atsushi Komoto , Hirokatsu Miyata , Wataru Kubo , Takashi Noma
发明人： Kohei Okamoto , Atsushi Komoto , Hirokatsu Miyata , Wataru Kubo , Takashi Noma
IPC分类号： G21K1/00
CPC分类号： G21K1/067 , G21K1/062
摘要： An X-ray waveguide includes a cladding and a core. The core has a periodic structure formed in at least one period direction. The periodic structure includes periodically arranged members made of material having different refractive index real parts. The core is surrounded by the cladding in the plane perpendicular to a wave-guiding direction. The Bragg angle obtained from the periodicity of the periodic structure is smaller than the total reflection critical angle at which X-rays are incident on the interface between the cladding and the core. The at least one period direction is the direction of at least one fundamental vector expressing the periodicity of the periodic structure in a plane of the core perpendicular to the wave-guiding direction.
摘要翻译： X射线波导包括包层和芯。芯具有在至少一个周期方向上形成的周期性结构。周期性结构包括由具有不同折射率实部的材料制成的周期性布置的构件。芯在垂直于波导方向的平面中被包层包围。从周期结构的周期性获得的布拉格角小于X射线入射在包层和芯之间的界面上的全反射临界角。至少一个周期方向是表示在垂直于波导方向的芯的平面中表示周期性结构的周期性的至少一个基本矢量的方向。

10. 发明授权

US08188828B2 Multilayer electronic component and electronic component module including the same 有权
标题翻译：多层电子元器件和电子元器件模块包括
公开(公告)号：US08188828B2
公开(公告)日：2012-05-29
申请号：US12486477
申请日：2009-06-17
申请人： Takashi Noma , Jun Sasaki , Kosuke Yamada
发明人： Takashi Noma , Jun Sasaki , Kosuke Yamada
IPC分类号： H01F5/00 , H01F27/30 , H01F27/28
CPC分类号： H01F17/0013 , H01F38/10 , H01G4/40
摘要： A multilayer electronic component that can suppress the formation of projections and depressions on a surface, and an electronic component unit including the multilayer electronic component, are provided. In the multilayer electronic component, coil electrodes (8) having a shape of ring-shaped wiring with a part removed therefrom are electrically connected to each other to constitute a coil (L). Magnetic layers (4) are stacked together with the plurality of coil electrodes (8). The coil electrodes (8a, 8c, 8e) having a radius r1 and the coil electrodes (8b, 8d) having a radius r2 that is smaller than the radius r1 may be alternately arranged in a stacking direction.
摘要翻译：提供了能够抑制表面上的凹凸形成的多层电子部件和包括该多层电子部件的电子部件单元。在多层电子部件中，具有从其去除部分的环状布线形状的线圈电极（8）彼此电连接以构成线圈（L）。磁性层（4）与多个线圈电极（8）堆叠在一起。具有半径r1的线圈电极（8a，8c，8e）和半径r2小于半径r1的线圈电极（8b，8d）可以沿堆叠方向交替排列。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式