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    • 71. 发明申请
    • BALLAST CIRCUIT FOR OPERATING A DISCHARGE LAMP
    • 用于操作放电灯的放电电路
    • WO02021884A2
    • 2002-03-14
    • PCT/JP2001/007680
    • 2001-09-05
    • H05B41/24H05B41/285H05B41/298H05B41/392
    • H05B41/2855H05B41/2985Y10S315/04
    • A ballast circuit for a discharge lamp capable of protecting the circuit when the lamp reaches its end of life with a cost effective circuit arrangement. The circuit includes a DC voltage sensing network for sensing a DC voltage which appears as a consequence of the lamp reaching its end of life. Upon the sensed DC voltage exceeding a threshold, a control is made to limit or stop supplying an output power to the lamp for protecting the ballast circuit from an otherwise generating excessive current. The sensing network is composed of a DC sensing capacitor and a resistor which are connected in circuit outside of a resonant circuit responsible for generating a high frequency voltage to operate the lamp. Thus, the DC sensing capacitor can be kept free from the high voltage generated by the resonant circuit and be of less cost for reducing a manufacturing cost.
    • 一种用于放电灯的镇流器电路,其能够在灯具达到其寿命终止时以成本有效的电路布置来保护电路。 该电路包括用于感测由于灯达到其寿命结束而出现的直流电压的直流电压感测网络。 在检测到的直流电压超过阈值时,进行控制以限制或停止向灯施加输出功率,以保护镇流器电路不会产生过大的电流。 感测网络由直流感测电容器和电阻器组成,其连接在负责产生高频电压以操作灯的谐振电路外部的电路中。 因此,直流感测电容器可以避免由谐振电路产生的高电压,并且降低制造成本的成本较低。
    • 73. 发明申请
    • DISCHARGE LAMP LIGHTING DEVICE
    • 放电灯照明装置
    • WO01097573A1
    • 2001-12-20
    • PCT/JP2001/005025
    • 2001-06-13
    • H05B41/24H05B41/298
    • H05B41/2985
    • A discharge lamp lighting device which is adapted to reliably detect the terminal stage of life of a discharge lamp when at high temperature and also at low temperature to protect the circuit while preventing the occurrence of cataphoresis. Impedance elements (Z1, Z1) are inserted between one of the respective ends of the filaments of two discharge lamps (La1, La2) and a potential point (ground) which does not have any high frequency amplitude so as to detect the difference between ac components of lamp voltages (VLa1, VLa2) for the discharge lamps (La1, La2) within a closed loop including the impedance elements (Z1, Z1) and discharge lamps (La1, La2) to decide whether an abnormality, such as nonemission, has occurred. Therefore, even if the absolute values of the amplitudes of the lamp voltages (VLa1, VLa2) vary as when high temperature and low temperature, the presence or absence of abnormalities can be stably and reliably decided. Further, there is no need to provide the secondary winding (N2) of a leakage transformer (LT1) with an ac-cutting capacitor, and the dc components are no longer applied to the discharge lamps (La1, La2), preventing the occurrence of cataphoresis.
    • 一种放电灯点亮装置,其适用于在高温低温下可靠地检测放电灯的寿命终端,以保护电路,同时防止电泳发生。 阻抗元件(Z1,Z1)插入两个放电灯(La1,La2)的灯丝的各个端部之一和没有任何高频振幅的电位点(地),以便检测ac 在包括阻抗元件(Z1,Z1)和放电灯(La1,La2)的闭环内的用于放电灯(La1,La2)的灯电压(VLa1,VLa2)的分量,以决定诸如非发射的异常是否具有 发生。 因此,即使灯电压(VLa1,VLa2)的振幅的绝对值随着高温低温的变化而变化,也可以稳定可靠地判定异常的有无。 此外,不需要提供具有交流电容器的泄漏变压器(LT1)的次级绕组(N2),并且直流分量不再施加到放电灯(La1,La2),从而防止 电泳。
    • 75. 发明申请
    • AN IMPROVED POWER FEEDBACK POWER FACTOR CORRECTION SCHEME FOR MULTIPLE LAMP OPERATION
    • 改进功率反馈功率因数校正方案,用于多灯操作
    • WO01054462A1
    • 2001-07-26
    • PCT/EP2001/000199
    • 2001-01-10
    • H05B41/24H05B41/28H05B41/282
    • H05B41/2827H05B41/28Y10S315/07
    • A ballast circuit for a single or multiple lamp parallel operation where at each lamp a condition may be controlled such that the amplitude of a resonant inductor current and an output voltage are almost constant in the steady state. The inventive circuit consists of a half-bridge of a DC storage capacitor, a DC blocking capacitor, power transistors which alternatively switch on and off and having 50 % duty ratio, and an LLC resonant converter having a resonant inductor and one or more resonant capacitors. The inventive circuit consists of an output transformer providing galvanic isolation for a double path type power feedback scheme. The output magnetizing inductance of the output transformer is utilized for power feedback circuit optimization and as a part of the LLC-resonant tank and is inserted right after the resonant inductor of the half-bridge circuit.
    • 一种用于单灯或多灯并联操作的镇流器电路,其中在每个灯处可以控制条件,使得谐振电感器电流的幅度和输出电压在稳定状态下几乎恒定。 本发明的电路包括直流存储电容器的半桥,隔直流电容器,交替地接通和断开并具有50%占空比的功率晶体管,以及具有谐振电感器和一个或多个谐振电容器的LLC谐振变换器 。 本发明的电路由输出变压器组成,为双路径功率反馈方案提供电隔离。 输出变压器的输出励磁电感用于功率反馈电路优化,作为LLC谐振回路的一部分,并插入到半桥电路的谐振电感之后。
    • 77. 发明申请
    • ELECTRONIC BALLAST CIRCUIT
    • 电子镇流器电路
    • WO01033917A1
    • 2001-05-10
    • PCT/EP2000/010009
    • 2000-10-10
    • H05B41/24H02M3/155H02M5/458H02M7/12H05B41/28H05B41/282H05B41/288
    • H05B41/2885H02M5/4585H05B41/28H05B41/282H05B41/288Y02B20/183Y02B20/202
    • An electronic ballast circuit for driving a gas discharge lamp from a mains voltage signal supply includes a ballast bridge unit that has an upper and lower signal line. A storage capacitor is coupled across the bridge unit. The bridge unit also includes an input converter bridge having at least two switches coupled in series at an input common terminal, wherein the upper switch is coupled to the upper signal line of the ballast bridge unit and the lower switch is coupled to the lower signal line. The ballast bridge also includes an output converter bridge having at least two switches coupled in series at an output common terminal. A reference voltage signal bridge in the ballast bridge unit includes at least two switches coupled in series at a reference voltage common terminal, so as to form a first differential voltage signal between the common input terminal and the reference voltage common terminal and a second differential voltage signal between the common output terminal and the reference voltage common terminal.
    • 用于从电源电压信号电源驱动气体放电灯的电子镇流器电路包括具有上和下信号线的镇流器桥单元。 存储电容器跨越桥接单元耦合。 桥单元还包括输入转换器桥,其具有在输入公共端串联耦合的至少两个开关,其中上开关耦合到镇流器桥单元的上信号线,下开关耦合到下信号线 。 镇流器桥还包括输出转换器桥,其具有在输出公共端串联耦合的至少两个开关。 镇流器桥单元中的参考电压信号桥包括在参考电压公共端串联耦合的至少两个开关,以便在公共输入端和参考电压公共端之间形成第一差分电压信号,而在第二差分电压 公共输出端子和参考电压公共端之间的信号。
    • 80. 发明申请
    • INDUCTIVE ELECTRODELESS LAMP PROVIDING ROTATING ELECTRIC FIELD
    • 电磁无极灯提供旋转电场
    • WO01003476A1
    • 2001-01-11
    • PCT/US2000/017861
    • 2000-06-30
    • H01J65/04H05B41/24H05B41/28
    • H05B41/24H05B41/2806Y02B20/22
    • An inductively coupled electrodeless lamp has a pair of excitation coils positioned exterior to an envelope or bulb. The pair of excitation coils are positioned and driven in a manner to produce at least one moving ring-shaped electric field within the envelope. The moving ring electric field results in formation of a correspondingly moving ring of plasma discharge within the envelope. The movement of the electric field results in a more uniformly hot plasma discharge volume within the envelope, thereby facilitating emission or re-radiation of photons. The movement of the ring-shaped electric field (and the corresponding plasma discharge) can be rotational, oscillating, wobbling, or switching. The nature of the movement depends upon such factors as coil geometry and orientation and coil excitation (driving) technique. In some embodiments, the pair of excitation coils are driven by quadrature techniques (e.g., either phase quadrature, frequency quadrature, or amplitude quadrature). Differing coil geometries and orientations are taught.
    • 电感耦合无电极灯具有位于外壳或灯泡外部的一对激励线圈。 一对励磁线圈被定位和驱动,以在外壳内产生至少一个移动的环形电场。 移动环电场导致在信封内形成相应移动的等离子体放电环。 电场的移动导致在封套内的更均匀的热等离子体放电体积,从而促进光子的发射或再辐射。 环形电场的运动(和相应的等离子体放电)可以是旋转,振荡,摆动或切换。 运动的性质取决于线圈几何形状和取向以及线圈激励(驱动)技术等因素。 在一些实施例中,一对激励线圈由正交技术(例如,相位正交,频率正交或幅度正交)驱动。 教导了不同的线圈几何形状和取向。