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    • 2. 发明专利
    • Switching element, variable inductor and electronic circuit device incorporating them in circuit configuration
    • 开关元件,电路配置中的变量电感器和电子电路装置
    • JP2009094472A
    • 2009-04-30
    • JP2008192865
    • 2008-07-25
    • Taiyo Yuden Co Ltd太陽誘電株式会社
    • NAKAJIMA KUNIHIKOISHIHARA HIDEOSASAJIMA YUICHI
    • H01F21/02H01L25/00
    • H01F21/02H01L2223/6655H01L2924/0002H01L2924/00
    • PROBLEM TO BE SOLVED: To provide an inexpensive variable inductor capable of continuously changing an inductance value without being accompanied by the degradation in a Q value. SOLUTION: When a control voltage is applied from a power source 32 to the control terminal 26 of a MOS type transistor 20, a conductive area is formed in a channel 30 and main terminals 22 and 24 are turned into a conductive state. When the control voltage is changed, the width of the conductive area in the channel 30 is changed, the width of the path of an induced current flowing to an induced current film 12 is changed as well, and an induced current amount is increased/decreased. In the meantime, the inductance value of a coil 14 varies in relation to the induced current amount flowing to the induced current film 12. Thus, by changing the control voltage of the MOS type transistor 20, the inductance value of the coil 14 is continuously changed. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种能够连续改变电感值而不伴随Q值劣化的便宜的可变电感器。 解决方案:当从电源32向MOS型晶体管20的控制端子26施加控制电压时,在通道30中形成导电区域,并将主端子22和24变成导通状态。 当控制电压变化时,通道30中的导电区域的宽度改变,流向感应电流膜12的感应电流的路径宽度也变化,并且感应电流量增加/减少 。 同时,线圈14的电感值相对于感应电流膜12的感应电流量而变化。因此,通过改变MOS型晶体管20的控制电压,线圈14的电感值连续 改变了 版权所有(C)2009,JPO&INPIT
    • 6. 发明专利
    • Variable inductor
    • 可变电感器
    • JP2006286805A
    • 2006-10-19
    • JP2005102828
    • 2005-03-31
    • Fujitsu Ltd富士通株式会社
    • ISHIKAWA HIROSHI
    • H01F21/02
    • H01F21/10H01F5/003H01F17/0006H01F21/02
    • PROBLEM TO BE SOLVED: To provide a variable inductor suitable for largely varying inductance.
      SOLUTION: The variable inductor X1 includes a conductor 12 having a coil 12a and a pair of terminals 12b and 12c electrically connected with the coil 12a, and a conductive member 33 capable of advancing/retreating with respect to the coil 12a. In the inductor X1, the shorter the separation d
      1 between the coil 12a and the conductive member 33, the smaller the inductance between the pair of terminals 12b and 12c, and the longer the separation d
      1 , the larger the inductance between the pair of terminals 12b and 12c.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供适用于大大改变电感的可变电感器。 解决方案:可变电感器X1包括具有线圈12a的导体12和与线圈12a电连接的一对端子12b和12c,以及能够相对于线圈12a前进/后退的导电构件33。 在电感器X1中,线圈12a和导电部件33之间的分离距离d 1 越短,一对端子12b和12c之间的电感越小,分离d 1 时,一对端子12b和12c之间的电感越大。 版权所有(C)2007,JPO&INPIT