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17 条记录 (耗时 0.02 秒)

    Double tuned circuit with balanced output and image trap
    1.
    发明公开
    Double tuned circuit with balanced output and image trap 失效
    Zweifach abgestimmte Schaltung mit symmetryrischem Ausgang und Spiegelfrequenzsperrkreis。

    公开(公告)号：EP0584732A1

    公开(公告)日：1994-03-02

    申请号：EP93113318.5

    申请日：1993-08-20

    申请人： THOMSON CONSUMER ELECTRONICS, INC.

    发明人： Wignot, Leroy Samuel ,  Pugel, Michael Anthony

    IPC分类号： H03J3/26

    CPC分类号： H03J3/26

    摘要： Conversion of an RF signal amplifier from an unbalanced signal configuration to a balanced signal configuration is provided while including an image trap for both sides of the balanced circuit. The grounded side of the secondary of a double tuned circuit (14,16,18,20,22) is lifted from ground to provide a balanced circuit configuration. A trap filter is provided in the balanced circuit configuration by a pair of small capacitors (CS1,CS2) coupled between the balanced secondary leads (26a,26b) to appropriate signal nodes.

    摘要翻译： 提供RF信号放大器从不平衡信号配置到平衡信号配置的转换，同时包括平衡电路两侧的图像陷波器。 双调谐电路（14,16,18,20,22）的次级的接地侧从地面提升以提供平衡电路配置。 通过耦合在平衡的次级引线（26a，26b）之间的一对小电容器（CS1，CS2）到适当的信号节点，在平衡电路配置中提供陷波滤波器。

    Voltage controlled oscillator including inter-terminal connection and trap circuit
    4.
    发明公开
    Voltage controlled oscillator including inter-terminal connection and trap circuit 审中-公开
    Spannungsgesteuerter Oszillator mit einer Zwischenklemmenverbindung und einerEntstörschaltung

    公开(公告)号：EP2120337A1

    公开(公告)日：2009-11-18

    申请号：EP09004272.2

    申请日：2009-03-25

    申请人： Alps Electric Co., Ltd.

    发明人： Nakatsuka, Kenji

    IPC分类号： H03J3/26

    CPC分类号： H03J3/26 ,  H03B19/00 ,  H03J3/185 ,  H03L7/099 ,  H03L2207/10

    摘要： A voltage controlled oscillator includes: a voltage controlled oscillation circuit (1), an oscillation frequency thereof being controlled by a control voltage signal; a PLL circuit (2) that generates a control voltage signal to be input to the voltage controlled oscillation circuit (1); a multiplier circuit (3) that multiplies an oscillation signal output from the voltage controlled oscillation circuit (1); and a band-pass filter and trap circuit (4) that sets a pass band for passing a signal with a predetermined multiplication number of multiplication signals output from the multiplier circuit (3) and a trap frequency equal to the frequency of the oscillation signal input to the multiplier circuit (3), and varies the pass band and the trap frequency in synchronization with the control voltage signal.

    摘要翻译： 压控振荡器包括：压控振荡电路（1），其振荡频率由控制电压信号控制; PLL电路（2），其产生要输入到所述压控振荡电路（1）的控制电压信号; 乘法器电路（3），其将从压控振荡电路（1）输出的振荡信号相乘; 以及带通滤波器和陷波电路（4），其设置用于使从所述乘法器电路（3）输出的乘法信号的预定倍数的信号通过的通带和等于所述振荡信号输入的频率的陷波频率 到乘法器电路（3），并且与控制电压信号同步地改变通带和陷波频率。

    Mechanical analysis apparatus with circuitry for processing low frequency signals
    6.
    发明公开
    Mechanical analysis apparatus with circuitry for processing low frequency signals 失效
    用于处理低频信号的电路

    公开(公告)号：EP0334303A3

    公开(公告)日：1991-03-13

    申请号：EP89105064.3

    申请日：1989-03-21

    申请人： THE PERKIN-ELMER CORPORATION

    发明人： O'Neill, Michael J.

    IPC分类号： G01R25/00 ,  H03H11/12 ,  H03J3/26 ,  G01N3/32

    CPC分类号： H03K4/066 ,  G01R25/00

    摘要： Electrical circuitry is useful for thermomechanical analysis apparatus. A sine-type wave force signal is generated by combining a triangular wave with an alternating wave equal in magnitude to about half of the square of the triangular wave. The triangular wave is generated with a control voltage proportional to the operating frequency. A response wave of the apparatus is amplified by an active filter circuit with corner frequencies approximately equal to each other and proportional to the operating frequency to process the wave independently of frequency. The force wave and response wave are converted to square waves which are combined to form pulsed time signals representing a phase difference for each half cycle. A pair of analog switches are receptive of the control voltage and responsive to the respective time signals to feed a switched output to an integrating capacitor such that successive voltage levels are effected in proportion to the time signals and the control voltage. Sample hold modules receptive of the voltage levels effect a steady voltage output representative of average phase shift independently of operating frequency and any time-­varying DC level in the response wave.

    METHOD OF ELECTRICAL BALANCING IN A THREE-PHASE SYSTEM
    8.
    发明公开
    METHOD OF ELECTRICAL BALANCING IN A THREE-PHASE SYSTEM 审中-公开

    公开(公告)号：EP3331163A1

    公开(公告)日：2018-06-06

    申请号：EP17203046.2

    申请日：2017-11-22

    申请人： Power Electronics España, S.L.

    发明人： SALVO LILLO, David ,  SALVO LILLO, Abelardo ,  POVEDA LERMA, Antonio ,  CAMPS SORIANO, José Luis ,  ANTÓN PONS, Marcial

    IPC分类号： H03J3/26

    CPC分类号： H02M5/458 ,  H02M1/32 ,  H02M5/00 ,  H02M2001/325 ,  H03J3/26

    摘要： A method of electrical balancing in a three-phase system is disclosed. The steps are: obtaining the magnitude and phase of each line-to-neutral output voltage; aligning a first line-to-neutral voltage with the real axis; choosing two voltages and adding a third voltage complex conjugate of the greater of the two previous voltages; calculating the positive sequence, the negative sequence and the zero sequence; cancelling the negative sequence; calculating the positive sequence and zero sequence of the new line-to-neutral voltage system; adding positive sequence voltage and zero sequence voltage to the positive sequence and zero sequence; calculating the new line-to-neutral voltages from the new positive sequence voltage and the new zero sequence voltage, with negative sequence voltage equal to zero; repeating the two previous steps until the module of the new third line-to-neutral voltage is equal to the module of the line-to-neutral output voltage discarded in the third step.

    Double-tuning circuit of television tuner
    9.
    发明公开
    Double-tuning circuit of television tuner 有权
    Doppelter Abstimmkreis eines Fernsehtuners

    公开(公告)号：EP2077618A1

    公开(公告)日：2009-07-08

    申请号：EP08021919.9

    申请日：2008-12-17

    申请人： Alps Electric Co., Ltd.

    发明人： Yamamoto, Masaki

    IPC分类号： H03J3/18 ,  H03J3/26 ,  H03H7/09 ,  H03H7/01

    CPC分类号： H03J3/26 ,  H03H7/0161 ,  H03H2007/013 ,  H03H2210/012 ,  H03J3/185 ,  H03J2200/32

    摘要： In a double-tuning circuit including a primary tuning circuit having a first inductor (1) and a first variable capacitive element (3) connected in parallel and a secondary tuning circuit having a second inductor (2) and a second variable capacitive element (4) connected in parallel, a fixed part of a copper-foil pattern (11) is connected to a connection point at which the double-tuning circuit is connected to an input terminal of a frequency mixing circuit (24), and a tip part (11a) of the copper-foil pattern (11) extends to near the first inductor (1), whereby a trap circuit for attenuating an image frequency component is formed. A pattern (L) is formed between a ground-side terminal of the first inductor (1) and the ground, and a capacitor (31) is connected between a connection point at which the first inductor (1) is connected to one terminal of the pattern (L) and a ground-side terminal of the second variable capacitive element (4).

    摘要翻译： 在包括具有并联连接的第一电感器（1）和第一可变电容元件（3）的初级调谐电路的双调谐电路和具有第二电感器（2）和第二可变电容元件（4）的二次调谐电路 ），铜箔图案（11）的固定部分连接到双调谐电路连接到混频电路（24）的输入端子的连接点，以及尖端部分（ 铜箔图案（11a）11a）延伸到第一电感器（1）附近，从而形成用于衰减图像频率分量的陷波电路。 在第一电感器（1）的接地侧端子与地之间形成有图案（L），并且电容器（31）连接在第一电感器（1）连接到第一电感器 图案（L）和第二可变电容元件（4）的接地侧端子。