Inverter device attenuating in-phase harmonic components of an
oscillating output signal
    67.
    发明授权
    Inverter device attenuating in-phase harmonic components of an oscillating output signal 失效
    变频器衰减振荡输出信号的同相谐波分量

    公开(公告)号:US5422765A

    公开(公告)日:1995-06-06

    申请号:US776858

    申请日:1991-10-16

    IPC分类号: H02M1/12 H02M7/5387 H03H7/09

    CPC分类号: H03H7/09 H02M1/12 H02M7/5387

    摘要: An inverter device receives a D.C. power source as an input and performs a switching operation at a single frequency in response to a preset driving signal (Vg1, Vg2, Vg3, Vg4) to produce an A.C. voltage. A transmission transformer (CH) having two coils which have the same inductance and are magnetically closely coupled with each other is provided and the two coils (CH1, CH2) are connected with the same polarities to respective ones of one set of lines for transmitting the A.C. voltage. The impedance of the transmission transformer (CH) is so small that it is negligible with respect to a normal A.C. voltage of a positive phase mode. A harmonic voltage is in an in-phase mode and the transmission transformer (CH) exhibits an extremely high impedance with respect to the harmonic voltage, and thus prevents the creation of a current path. As a result, the waveform distortion of a voltage applied between the drain and source of MOS transistors (FET1, FET2, FET3, FET4) is reduced and the peak value is reduced.

    摘要翻译: 逆变器装置接收直流电源作为输入,并响应于预设的驱动信号(Vg1,Vg2,Vg3,Vg4)以单个频率执行切换操作,以产生交流电压。 提供了具有相同电感并且彼此磁耦合的两个线圈的变速器(CH),并且两个线圈(CH1,CH2)以相同的极性连接到一组线路中的相应的一组线路,用于发送 交流电压。 传输变压器(CH)的阻抗如此之小,相对于正相模式的正常交流电压可以忽略不计。 谐波电压处于同相模式,并且变压器(CH)相对于谐波电压具有极高的阻抗,因此防止了电流路径的产生。 结果,施加在MOS晶体管(FET1,FET2,FET3,FET4)的漏极和源极之间的电压的波形失真减小,峰值减小。

    Damper assembly for pianos
    69.
    发明授权
    Damper assembly for pianos 失效
    钢琴减震器总成

    公开(公告)号:US4306483A

    公开(公告)日:1981-12-22

    申请号:US87491

    申请日:1979-10-23

    申请人: Eiji Kobayashi

    发明人: Eiji Kobayashi

    IPC分类号: G10C3/16

    CPC分类号: G10C3/166

    摘要: A damper assembly for pianos is provided with at least two damper felt sections disposed to its damper head in such a manner to enable dual staged damping action, only the large amplitude components of string vibration being damped in the first stage, and the remainder of the string vibration being almost fully damped in the second stage. Stable damping effect on the string and minimized jumping of the damper felts are attained in particular in the bass range.

    摘要翻译: 用于钢琴的阻尼器组件设置有至少两个阻尼器毡部分,其以这样的方式设置在其阻尼器头部上,使得能够进行双阶段阻尼作用,只有在第一阶段阻尼的弦振动的大幅度分量,以及其余部分 弦振动在第二阶段几乎完全阻尼。 特别是在低音范围内,可以获得稳定的阻尼效果和阻尼器毛毡的跳跃。

    Synthetic siRNA detection method
    70.
    发明授权
    Synthetic siRNA detection method 有权
    合成siRNA检测方法

    公开(公告)号:US09200314B2

    公开(公告)日:2015-12-01

    申请号:US13186941

    申请日:2011-07-20

    摘要: A method for accurately and easily detecting a synthetic siRNA, for example, a siRNA in which the 3′ end is DNA, and a kit used for the method are provided. The present invention relates to a method for detecting a siRNA in which the 3′ end is DNA, comprising: (a) adding polydeoxyadenosine to the 3′ DNA end of at least one strand of the siRNA to be detected to produce a polydeoxyadenosine-added RNA; (b) annealing a polydeoxythymidine primer having a tag sequence at its 5′ side to the polydeoxyadenosine-added RNA and synthesizing DNA from the primer by a reverse transcription; and (c) detecting the DNA synthesized in (b).

    摘要翻译: 提供了准确且容易地检测合成siRNA的方法,例如其中3'末端为DNA的siRNA和用于该方法的试剂盒。 本发明涉及一种用于检测其中3'末端为DNA的siRNA的方法,包括:(a)向被检测的siRNA的至少一条链的3'DNA末端添加多脱氧腺苷以产生加入的多脱氧腺苷 RNA; (b)将其5'侧具有标签序列的多脱氧胸苷引物退火至加入多脱氧腺苷的RNA并通过逆转录合成来自引物的DNA; 和(c)检测(b)中合成的DNA。