Switching power supply with surge current and surge voltage prevention
    1.
    发明授权
    Switching power supply with surge current and surge voltage prevention 失效
    开关电源具有浪涌电流和浪涌电压预防

    公开(公告)号:US5774345A

    公开(公告)日:1998-06-30

    申请号:US725366

    申请日:1996-10-03

    IPC分类号: H02M3/335 H02M3/337

    摘要: A direct current output voltage is switched by two switching units and a current alternately changing directions is supplied to a primary winding of a transformer. An alternating voltage induced in a secondary winding of the transformer is rectified and smoothed, and is applied to a control circuit. A bidirectional switching unit is connected in parallel with the primary winding, and is controlled by the control circuit so that the primary winding is short-circuited by the bidirectional switching unit and an exciting energy of the transformer is held continuously.

    摘要翻译: 直流输出电压由两个开关单元切换,并且电流交替变化的方向被提供给变压器的初级绕组。 在变压器的次级绕组中感应的交流电压被整流和平滑,并被施加到控制电路。 双向开关单元与初级绕组并联连接,由控制电路控制,使得初级绕组由双向开关单元短路,变压器的激励能量持续保持。

    Battery-driven electronic device and mobile communication apparatus
    2.
    发明授权
    Battery-driven electronic device and mobile communication apparatus 失效
    电池驱动的电子设备和移动通信设备

    公开(公告)号:US06882130B2

    公开(公告)日:2005-04-19

    申请号:US10451508

    申请日:2002-04-17

    摘要: The present invention provides a battery-driven electronic device for which a long time use of the battery can be achieved and mobile communications equipment such as a portable telephone. Even if the time at which the output voltage of a battery 201 becomes below the supply voltage required by a load 206 including a power amplifier for wireless communications comes earlier than a conventional lithium ion battery because of its discharge characteristics that the battery voltage change ratio is 0.25 or more, a step-up and -down converter 200 operates as follows. When the output voltage of the battery is higher than the supply voltage required by the load, the voltage is set to a predetermined supply voltage by the step-down operation mode. When the output voltage of the battery is decreased and becomes lower than the supply voltage required by the load, the voltage is set to a predetermined supply voltage by the step-up operation mode. Thus, even for a battery employing a new material having a high energy density, a long term use of the battery can be achieved.

    摘要翻译: 本发明提供了一种电池驱动的电子设备,其可以实现电池的长时间使用和诸如便携式电话的移动通信设备。 即使电池201的输出电压低于包括无线通信功率放大器的负载206所需的电源电压的时间比常规的锂离子电池要早,因为其放电特性使电池电压变化率为 升压和降压转换器200如下操作。 当电池的输出电压高于负载所需的电源电压时,通过降压操作模式将电压设定为预定的电源电压。 当电池的输出电压降低并且变得低于负载所需的电源电压时,通过升压操作模式将电压设置为预定的电源电压。 因此,即使对于采用具有高能量密度的新材料的电池,也可以长期使用电池。

    DC-DC converter
    3.
    发明授权
    DC-DC converter 有权
    DC-DC转换器

    公开(公告)号:US06850401B2

    公开(公告)日:2005-02-01

    申请号:US10447066

    申请日:2003-05-27

    IPC分类号: H02M3/158 H02M3/22

    摘要: In a DC-DC converter equipped with an operation mode (standby operation mode) which is only for reducing consumption power in a light load state such as at the time of a start-up, there is an output power dive detecting circuit disposed which outputs a result of a comparison of an upper limit output voltage E1, which is higher a predetermined voltage than a target output voltage E0, with an output DC voltage Vo. The DC-DC converter does not enter the standby operation mode when the output DC voltage Vo is higher than the upper limit output voltage E1, which greatly improves a response speed at which the output DC voltage Vo efficiently reaches the target output voltage E0.

    摘要翻译: 在配备有仅在降低启动时的轻负载状态下的消耗功率的操作模式(待机操作模式)的DC-DC转换器中,存在输出功率潜水检测电路,其输出 将比预定电压高于目标输出电压E0的上限输出电压E1与输出直流电压Vo进行比较的结果。 当输出直流电压Vo高于上限输出电压E1时,DC-DC转换器不进入待机运行模式,极大地提高了输出直流电压Vo有效达到目标输出电压E0的响应速度。

    Switching power supply device
    4.
    发明授权
    Switching power supply device 失效
    开关电源装置

    公开(公告)号:US5644479A

    公开(公告)日:1997-07-01

    申请号:US325928

    申请日:1994-10-18

    IPC分类号: H02M3/28 H02M1/00 H02M3/335

    CPC分类号: H02M3/33569

    摘要: A switching power supply device which includes a series circuit constituted by a first switching element which is connected to an input voltage and which is at least repeatedly turned on and off and a second switching element which is repeatedly turned on and off alternating with the first switching element. A first capacitor is connected to one end of the second switching element. A transformer having a primary winding is connected to the second switching element and the first capacitor. A series circuit constituted by a second capacitor and a rectifier diode is connected across the secondary winding of the transformer, and a series circuit constituted by an inductance element and a smoothing capacitor is connected across the rectifier diode. A control circuit controls the turning on and off of the first and second switching elements based on the voltage across the smoothing capacitor. The voltage across the smoothing capacitor is supplied as the output.

    摘要翻译: 一种开关电源装置,包括由连接到输入电压并且至少重复接通和断开的第一开关元件和与第一开关交替重复接通和断开的第二开关元件构成的串联电路 元件。 第一电容器连接到第二开关元件的一端。 具有初级绕组的变压器连接到第二开关元件和第一电容器。 由变压器的次级绕组连接由第二电容器和整流二极管构成的串联电路,并且由整流二极管连接由电感元件和平滑电容器构成的串联电路。 控制电路基于平滑电容器两端的电压来控制第一和第二开关元件的接通和断开。 平滑电容器两端的电压作为输出提供。

    Switching power supply
    5.
    发明授权
    Switching power supply 失效
    开关电源

    公开(公告)号:US5490052A

    公开(公告)日:1996-02-06

    申请号:US53525

    申请日:1993-04-26

    IPC分类号: H02M3/335 H02M3/28

    CPC分类号: H02M3/33569

    摘要: A switching power supply supplies a regulated output voltage for an electronic apparatus in industrial or commercial use and suppresses generation of a spike voltage and a spike current due to a transformer, and a recovery voltage of a rectifying diode due to switching and it results in reduction of noise interference and power loss. A series connection of a first switching means and a second switching means repeating on/off action alternately is connected to a d-c source. A series connection of a first capacitor and a primary winding of a transformer is connected in parallel with the second switching means. An induced voltage in a secondary winding is supplied to an output through a rectifying/filtering means. A series resonance current in a closed circuit comprising the first capacitor and a leakage inductance suppresses spike voltage, spike current, and recovery voltage of the rectifying diode.

    摘要翻译: 开关电源为工业或商业用电子设备提供调节的输出电压,并且抑制由于变压器而产生尖峰电压和尖峰电流,以及由于开关导致的整流二极管的恢复电压,并且导致减少 的噪声干扰和功率损耗。 交替地重复开/关动作的第一开关装置和第二开关装置的串联连接连接到d-c源。 变压器的第一电容器和初级绕组的串联连接与第二开关装置并联连接。 次级绕组中的感应电压通过整流/滤波装置提供给输出端。 包括第一电容器和漏电感的封闭电路中的串联谐振电流抑制了整流二极管的尖峰电压,尖峰电流和恢复电压。

    Regenerative control type switching power source device
    6.
    发明授权
    Regenerative control type switching power source device 失效
    再生控制型开关电源装置

    公开(公告)号:US5383106A

    公开(公告)日:1995-01-17

    申请号:US1646

    申请日:1993-01-07

    IPC分类号: H02M3/28 H02M3/335

    CPC分类号: H02M3/33569 Y02B70/1433

    摘要: Disclosed is a switching power source device for supplying a DC stabilized voltage to industrial or household electronic appliances. The power source device can restrict a change in the switching frequency due to the change in load so that low noise and high efficiency can be realized. The power source device includes a first rectifying and smoothing circuit and a second rectifying and smoothing circuit. The first rectifying and smoothing circuit includes a rectifying diode and a smoothing capacitor. The second rectifying and smoothing circuit includes a rectifying diode and a smoothing capacitor. In a closed circuit composed of the first rectifying and smoothing circuit and second rectifying and smoothing circuit which are connected by a transformer, leakage inductance between the primary winding and secondary winding of the transformer is caused to resonate with the first or second rectifying and smoothing circuit so that a resonance current due to the resonance is taken as the current from the secondary winding to restrict occurrence of noise.

    摘要翻译: 公开了一种用于向工业或家用电子设备提供DC稳定电压的开关电源装置。 电源装置可以限制由于负载变化引起的开关频率的变化,从而可以实现低噪声和高效率。 电源装置包括第一整流和平滑电路和第二整流和平滑电路。 第一整流平滑电路包括整流二极管和平滑电容器。 第二整流和平滑电路包括整流二极管和平滑电容器。 在由变压器连接的由第一整流平滑电路和第二整流电路组成的闭路中,使变压器的初级绕组和次级绕组之间的漏电感与第一或第二整流平滑电路 使得由于谐振引起的谐振电流被用作来自次级绕组的电流以限制噪声的发生。

    Multilayer ceramic capacitor
    7.
    发明授权
    Multilayer ceramic capacitor 失效
    多层陶瓷电容器

    公开(公告)号:US06266230B1

    公开(公告)日:2001-07-24

    申请号:US09339521

    申请日:1999-06-24

    IPC分类号: H01G406

    CPC分类号: H01G4/1227

    摘要: The present invention provides a multilayer ceramic capacitor in which electrode metal layers and dielectric ceramic layers are laminated alternately and its dielectric constant peak is present at a temperature below −50° C. The multilayer ceramic capacitor is at least one selected from a multilayer ceramic capacitor to be incorporated into an electric circuit in which an electric field of at least 200 V/mm is applied to dielectric layers as a DC bias electric field and an alternating current at a frequency of at least 20 kHz is superimposed and a multilayer ceramic capacitor to be incorporated into an electric circuit in which an electric field of at least 200 V/mm is applied to dielectric layers as an AC electric field. As the dielectric ceramic, a ceramic containing lead atoms whose amount is indicated by being measured in the form of PbO, which is at least 30 mol %, particularly a compound with a perovskite structure represented by ABO3 is used. Thus, an inexpensive large-capacity multilayer capacitor that has thermal resistance and is stable for a high DC bias voltage and a high frequency voltage, and a low loss switching power supply using this capacitor can be provided.

    摘要翻译: 本发明提供了一种多层陶瓷电容器,其中电极金属层和电介质陶瓷层交替层叠,其介电常数峰值存在于低于-50℃的温度。多层陶瓷电容器是选自多层陶瓷电容器 被掺入电路中,其中将至少200V / mm的电场施加到电介质层作为DC偏置电场,并且以至少20kHz的频率的交流电叠加,并将多层陶瓷电容器叠加到 被并入到电介质层中施加至少200V / mm的电场作为AC电场的电路中。 作为电介质陶瓷,使用含有铅原子的陶瓷,该铅原子的量以PbO的形式测定,其为至少30mol%,特别是由ABO 3表示的具有钙钛矿结构的化合物。 因此,可以提供具有耐热性并且对于高直流偏压和高频电压是稳定的便宜的大容量多层电容器,以及使用该电容器的低损耗开关电源。

    Switching power supply without switching induced spike voltages
    8.
    发明授权
    Switching power supply without switching induced spike voltages 失效
    开关电源没有开关感应尖峰电压

    公开(公告)号:US5448465A

    公开(公告)日:1995-09-05

    申请号:US111729

    申请日:1993-08-25

    IPC分类号: H02M3/335

    CPC分类号: H02M3/33569 H02M2001/009

    摘要: A switching power supply supplies a regulated output voltage and suppresses spike voltage and spike current generated by a switching action of transformers, and suppresses switching frequency drift due to load variation. Output stability of multi-output design is improved and recovery of rectifying diodes by a current resonance are suppressed. A reduction of noise interference to electronic equipments and power loss in the switching power supply itself results. A series connection of a primary winding of a first transformer and a first switching means, which repeats an on/off action is connected across a d-c power source. A series connection of a second switching means, which repeats an on/off action alternately with the first switching means, and a first capacitor is connected in parallel with the primary winding of the first transformer. A series connection of a primary winding of the second transformer and a second capacitor is connected in parallel with the second switching means. Regulated d-c outputs are taken out from each secondary winding of the transformers through rectifiers/filters. A control circuit supplies on/off signals, which on/off-ratios are varied according to one of the regulated d-c outputs, to the first and the second switching means.

    摘要翻译: 开关电源提供稳定的输出电压,并抑制由变压器的开关动作产生的尖峰电压和尖峰电流,并抑制由于负载变化引起的开关频率漂移。 多输出设计的输出稳定性得到改善,并且抑制了通过电流谐振的整流二极管的恢复。 降低对电子设备的噪声干扰和开关电源本身的功率损耗。 第一变压器的初级绕组和重复开/关动作的第一开关装置的串联连接跨d-c电源连接。 与第一开关装置交替地重复开/关动作的第二开关装置和第一电容器的串联连接与第一变压器的初级绕组并联连接。 第二变压器的初级绕组和第二电容器的串联连接与第二开关装置并联连接。 通过整流器/滤波器从变压器的每个次级绕组中取出调节的d-c输出。 控制电路将开/关信号根据调节的d-c输出之一提供,该开/关信号变化到第一和第二开关装置。

    Photodynamic therapy using photosensitizing agent or 5-aminolevulinic acid
    9.
    发明授权
    Photodynamic therapy using photosensitizing agent or 5-aminolevulinic acid 有权
    光敏疗法使用光敏剂或5-氨基乙酰丙酸

    公开(公告)号:US09345904B2

    公开(公告)日:2016-05-24

    申请号:US14126929

    申请日:2012-06-20

    摘要: It is to provide photodynamic therapy (PDT) and photodynamic diagnosis (PDD) which are suitable for the diagnosis and therapy of a part requiring a certain degree of deep penetration, such as subcutaneous cancer and lymph nodes surrounded by blood vessels and fat. This is solved by performing PDT and PDD targeting cancer by administering a composition comprising a photosensitizing agent such as a tetrapyrrole-based compound (photofrin, protoporphyrin IX, etc.) or ALAs such as 5-aminolevulinic acid (ALA), ALA methyl ester, ALA ethyl ester, ALA propyl ester, ALA butyl ester, ALA pentyl ester, or a hydrochloride, phosphate, or sulfate thereof followed by irradiation with excitation light at a wavelength of 480 to 580 nm.

    摘要翻译: 它是提供光动力疗法(PDT)和光动力学诊断(PDD),适用于诊断和治疗需要一定程度深度穿透的部位,如皮下癌和由血管和脂肪包围的淋巴结。 通过施用包含光敏剂如四吡咯基化合物(光调节素,原卟啉IX等)或ALA的组合物,例如5-氨基乙酰丙酸(ALA),ALA甲酯, ALA乙酯,ALA丙酯,ALA丁酯,ALA戊酯或其盐酸盐,磷酸盐或硫酸盐,然后用波长480〜580nm的激发光照射。

    Composite slide bearing
    10.
    发明授权
    Composite slide bearing 有权
    复合滑动轴承

    公开(公告)号:US08967870B2

    公开(公告)日:2015-03-03

    申请号:US13798676

    申请日:2013-03-13

    IPC分类号: F16C33/22 F16C33/28 F16C33/20

    摘要: A high-precision slide bearing includes a substrate of sintered metal and a synthetic resin layer. The bearing can be used for rotary shafts in compressors of room air-conditioners or in transmissions of motor vehicles and construction machines to support relatively large radial and axial loads. The resin layer is integrally superposed on the radially inner surface of the sintered metal substrate of the slide bearing, which is a cylindrical member. The resin layer is made of a resin composition of an aromatic polyetherketone resin containing a fibrous filler. The fibrous filler is made up of fibers dispersed in the resin layer and oriented such that their length directions intersect the rotational direction of the bearing at angles of 45 to 90 degrees. The resin layer has a thickness of 0.1 to 0.7 mm.

    摘要翻译: 高精度滑动轴承包括烧结金属的基材和合成树脂层。 该轴承可用于室内空调的压缩机中的旋转轴,也可用于机动车辆和建筑机械的变速器中,以支持较大的径向和轴向载荷。 树脂层一体地叠置在作为圆柱形构件的滑动轴承的烧结金属基板的径向内表面上。 树脂层由含有纤维状填料的芳香族聚醚酮树脂的树脂组合物构成。 纤维状填料由分散在树脂层中的纤维构成,使其长度方向以45〜90度的角度与轴承的旋转方向相交。 树脂层的厚度为0.1〜0.7mm。