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1. 发明授权

US5040239A Tuning circuit and receiver 失效
标题翻译：调谐电路和接收器
公开(公告)号：US5040239A
公开(公告)日：1991-08-13
申请号：US398170
申请日：1989-08-23
申请人： Hiroshi Kondo , Takeyuki Kouchi
发明人： Hiroshi Kondo , Takeyuki Kouchi
IPC分类号： H03J3/20 , H03J3/16 , H04B1/18
CPC分类号： H04B1/18 , H03J3/16
摘要： In a tuning circuit, use is made of a current-controlled type variable inductor comprising a tuning coil and a control coil for controlling the magnetic flux density of the tuning coil. The tuning coil is connected in series with the antenna; a tuning capacitor is connected to each end of tuning coil; and by controlling a current flowing through the control coil, magnetic flux induced in the tuning coil is increased, decreased or cancelled so that the magnetic flux density of the tuning coil is adjusted to control the inductance thereof, thereby permitting the tuning circuit to be tuned to any desired frequency in the receiving frequency band.
摘要翻译：在调谐电路中，使用包括调谐线圈和用于控制调谐线圈的磁通密度的控制线圈的电流控制型可变电感器。调谐线圈与天线串联; 调谐电容器连接到调谐线圈的每一端; 并且通过控制流过控制线圈的电流，在调谐线圈中感应的磁通增加，减小或消除，使得调谐线圈的磁通密度被调节以控制其电感，从而允许调谐电路被调谐到接收频带中的任何期望的频率。

2. 发明授权

US06525596B2 Series regulator having a power supply circuit allowing low voltage operation 有权
标题翻译：具有允许低电压操作的电源电路的串联调节器
公开(公告)号：US06525596B2
公开(公告)日：2003-02-25
申请号：US09840379
申请日：2001-04-23
申请人： Rinya Hosono , Takeyuki Kouchi , Yukinori Kiya , Takashi Sogabe
发明人： Rinya Hosono , Takeyuki Kouchi , Yukinori Kiya , Takashi Sogabe
IPC分类号： G05F110
CPC分类号： G05F1/575
摘要： There is disclosed a semiconductor device, which allows the ripple rejection characteristics to be improved and the operating voltage to be reduced. The semiconductor device comprises a power supply circuit arranged between an input terminal and internal circuits so as to make a connection therebetween, said power supply circuit including a transistor Q41 for supplying each of the internal circuits with a drive voltage and another transistor Q44 for allowing a current to pass therethrough in response to a magnitude of a reference voltage supplied to a base thereof and a magnitude of the drive voltage supplied to an emitter thereof. A part of the circuit composed of transistors Q42, Q43 and a resistor R5 controls a current flowing through of the transistor Q41 based on the current that has passed though the transistor Q44, so that the drive voltage could be set to a value higher than the reference voltage approximately by a magnitude of a forward voltage between the base and the emitter of the transistor Q44.
摘要翻译：公开了一种半导体器件，其允许提高纹波抑制特性并降低工作电压。半导体器件包括布置在输入端和内部电路之间以便在其间进行连接的电源电路，所述电源电路包括用于向每个内部电路提供驱动电压的晶体管Q41和用于允许内部电路的另一晶体管Q44的晶体管Q41 响应于提供给其基极的参考电压的大小和提供给其发射极的驱动电压的大小，电流通过。由晶体管Q42，Q43和电阻器R5组成的电路的一部分基于已经通过晶体管Q44的电流来控制流过晶体管Q41的电流，使得驱动电压可以被设置为高于参考电压近似于晶体管Q44的基极和发射极之间的正向电压的幅度。

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