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    • 41. 发明申请
    • 12th active filter capable of concurrently removing 11th and 13th harmonics
    • 第12个有源滤波器,能够同时去除第11和第13个谐波
    • US20050057949A1
    • 2005-03-17
    • US10735537
    • 2003-12-12
    • Chan KimJeong AhnGil JungSeok LeeJin Shin
    • Chan KimJeong AhnGil JungSeok LeeJin Shin
    • H02J3/01H02M1/12H02M5/45
    • H02M1/12H02J3/01Y02E40/40
    • The present invention relates to a 12th active filter capable of concurrently removing 11th and 13th harmonics in order to obtain a filter performance capable of removing 11th and 13 harmonics even when a filter capable of removing 11th and 13th harmonics is constituted using a compensation function. The 12th active filter capable of concurrently removing 11th and 13th harmonics is characterized in that a passive filter 7-1 formed of a condenser 7-1-1, an inductance 7-1-2 and a resistor 7-1-3 is formed of the phases A, B and C, and the passive filter 7-1 of each phase is formed in a three-phase structure in which a switch 7-3 and a voltage source converter 7-4 are connected through a transformer 7-2, and in the voltage source converter 7-4, V1˜V6 of a firing unit 7-7 are connected with the bases of the transistors of semiconductor devices V1˜V6, respectively, and a control unit 7-6 connected with a signal detection unit 7-5 is connected with the firing unit 7-7 for thereby removing 11th and 13th harmonics.
    • 本发明涉及能够同时去除11次和13次谐波的12Ω有源滤波器,以获得能够去除11次和13次谐波的滤波器性能,即使当能够去除 使用补偿函数构成11< 13>次谐波。 能够同时去除11次和13次谐波的12个有源滤波器的特征在于,由电容器7-1-1,电感器7-1-2和电感器7-1-2形成的无源滤波器7-1 电阻器7-1-3由相位A,B和C形成,每相的无源滤波器7-1形成为三相结构,其中开关7-3和电压源转换器7-4 通过变压器7-2连接,并且在电压源转换器7-4中,点火单元7-7的V1〜V6分别与半导体器件V1〜V6的晶体管的基极连接,并且控制单元 连接有信号检测单元7-5的7-6与点火单元7-7连接,从而去除11和13次谐波。
    • 42. 发明授权
    • Digital power amplifier
    • 数字功率放大器
    • US06737917B2
    • 2004-05-18
    • US10221891
    • 2002-09-17
    • Tae Ha RyooChan KimNam In Kim
    • Tae Ha RyooChan KimNam In Kim
    • H03F338
    • H03F3/2171
    • The present invention relates to amplifier combined digital amplifier using pulse width modulation and analog amplifier, and more particularly, to amplifier converting the analog input signal to pulse width modulation signal by comparing the analog input signal with triangle-wave, inputting the pulse width modulation signal to a dead time logic circuit, controlling the “ON”, and “OFF” operation of output transistor by output signal of the dead time logic circuit and converting the pulse width modulation signal of the output transistor to amplified analog signal using LC low pass filter. The present invention reduces the loss of efficiency of output transistor. Therefore the size of heat radiating plate can be easily reduced and amplifier with compact size can be accomplished by the present invention.
    • 本发明涉及使用脉冲宽度调制和模拟放大器的放大器组合数字放大器,更具体地,涉及通过将模拟输入信号与三角波进行比较来将模拟输入信号转换为脉宽调制信号的放大器,输入脉宽调制信号 到死区逻辑电路,通过死区时间逻辑电路的输出信号控制输出晶体管的“ON”和“OFF”运算,并将LC输出晶体管的脉宽调制信号转换为放大模拟信号,使用LC低通滤波器 。 本发明降低了输出晶体管的效率损失。 因此,散热板的尺寸可以容易地减小,并且通过本发明可以实现具有紧凑尺寸的放大器。
    • 44. 发明授权
    • Drive leader and take-up reel for a tape drive
    • 磁带机的驱动器和卷带机
    • US06398143B1
    • 2002-06-04
    • US09670857
    • 2000-09-26
    • Chan KimRoy MacKinnonGeorge Saliba
    • Chan KimRoy MacKinnonGeorge Saliba
    • G03B158
    • G11B15/673G11B23/26
    • A tape drive (10) that includes a cartridge receiver (18), a take-up reel (16) and a drive leader (32) is adapted for use with a cartridge (22) that includes a cartridge leader (28) having a cartridge buckle component (56). The drive leader (32) includes a drive buckle component (54) that engages the cartridge buckle component (56) to couple the drive leader (32) to the cartridge leader (28). The drive leader (32) includes a leader connector (88) having a connector aperture (102). The take-up reel (16) includes a hub (120) that receives the drive leader (32). Uniquely, the hub (120) including a drive component channel (146) that is sized and shaped to receive the drive buckle component (54). Preferably, the hub (120) also includes a cartridge component channel (148) that is sized and shaped to receive the cartridge buckle component (56) and a pair of member channels (150) (152) for receiving the leader connector (88). With this design, the surface of the storage tape (26) that is being wound around the take-up reel (16) is substantially a uniform distance from an axis of rotation (33) of the take-up reel (16). This reduces the amount of wear of the storage tape (26) and reduces speed variations caused by winding the tape (26) onto an eccentric surface.
    • 包括盒式存储器(18),卷取卷轴(16)和驱动器引导件(32)的磁带驱动器(10)适于与盒(22)一起使用,所述盒(22)包括具有 盒扣组件(56)。 驱动器引导件(32)包括驱动带扣组件(54),该驱动器带扣部件接合盒带扣组件(56)以将驱动器引导件(32)耦合到盒头(28)。 驱动器引导件(32)包括具有连接器孔(102)的引导连接器(88)。 卷取卷轴(16)包括接收驱动引导件(32)的轮毂(120)。 独特地,毂(120)包括驱动部件通道(146),该驱动部件通道的尺寸和形状被设计成接收驱动器带扣部件(54)。 优选地,轮毂(120)还包括钉仓组件通道(148),其尺寸和形状适于容纳盒带扣部件(56)和用于接收引导连接器(88)的一对部件通道(150) 。 利用这种设计,卷绕在卷取卷轴16上的存储带26的表面与卷取卷轴16的旋转轴线33基本上是均匀的距离。 这减少了存储带(26)的磨损量并且减小了将带(26)卷绕到偏心表面上引起的速度变化。