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106 条记录 (耗时 0.014 秒)

    Negative differential resistance amplifier
    31.
    发明授权
    Negative differential resistance amplifier 失效
    负差分电阻放大器

    公开(公告)号：US5920231A

    公开(公告)日：1999-07-06

    申请号：US907949

    申请日：1997-08-11

    申请人： Yuji Ando

    发明人： Yuji Ando

    IPC分类号： H01L27/095 ,  H01L29/737 ,  H01L29/88 ,  H03F3/55 ,  H03F15/00 ,  H01L29/06

    CPC分类号： B82Y10/00 ,  H01L29/7376 ,  H01L29/882 ,  H03F3/55

    摘要： There is provided a negative differential resistance amplifier comprising a negative differential resistance transistor having negative input conductance by utilizing resonant tunneling effect. The transistor is electrically connected to a signal source circuit in cascade, and the following relation is established in the negative differential resistance amplifier:0 0) indicates a conductance measured when viewed from an interface between the negative differential resistance transistor and the signal source circuit to the signal source circuit, -gi (gi>0) indicates a conductance of the negative differential resistance transistor, and G (G

    摘要翻译： 提供了一种负差分电阻放大器，其包括通过利用谐振隧穿效应的具有负输入电导的负差分电阻晶体管。 晶体管串联电连接到信号源电路，并且在负差分电阻放大器中建立以下关系：0 0）表示当从 负差分电阻晶体管和信号源电路到信号源电路，-gi（gi> 0）表示负差分电阻晶体管的电导，G（G

    Isolator circuit with improved frequency response
    32.
    发明授权
    Isolator circuit with improved frequency response 失效
    隔离器电路具有改善的频率响应

    公开(公告)号：US3974425A

    公开(公告)日：1976-08-10

    申请号：US555193

    申请日：1975-03-03

    申请人： Toshitsugu Ueda ,  Shiro Takeuchi

    发明人： Toshitsugu Ueda ,  Shiro Takeuchi

    IPC分类号： H01F19/06 ,  G01R19/20 ,  G05F1/10 ,  H03F3/38 ,  H03F15/00

    CPC分类号： G01R19/20 ,  G05F1/10 ,  H03F15/00

    摘要： An isolator circuit of the type designed to accept an input current and to generate a corresponding output current which is isolated from the input. The isolator circuit is formed with a core developing a flux in response to the input current and having a feedback winding for carrying the isolated output current. A magneto-sensitive element, such as a Hall effect element, responds to flux in the core, and an amplifier receives the output of the magneto-sensitive element and supplies a current to the feedback winding so as to cancel the flux produced in the core due to the input current. Improved frequency response is attained by means of a compensation winding disposed to respond to the difference between the flux produced by the input current and the flux produced by the output current. The compensation winding is connected in the isolator circuit with the voltage developed across the compensation winding being superposed on the output of the magneto-sensitive element and supplied to the input of the amplifier. The voltage developed across the compensation winding leads the voltage across the magneto-sensitive element and compensates for phase lags arising in the current, thereby extending accurate frequency response of the circuit.

    摘要翻译： 一种隔离器电路，其类型被设计为接受输入电流并产生与输入隔离的相应输出电流。 隔离器电路形成有芯，其响应于输入电流形成通量，并具有用于承载隔离输出电流的反馈绕组。 诸如霍尔效应元件的磁敏元件响应于磁芯中的磁通，并且放大器接收磁敏元件的输出并且向反馈绕组提供电流以便消除在磁芯中产生的磁通量 由于输入电流。 改进的频率响应通过设置为响应由输入电流产生的磁通与由输出电流产生的磁通之差的补偿绕组来实现。 补偿绕组连接在隔离器电路中，跨越补偿绕组的电压叠加在磁敏元件的输出上，并提供给放大器的输入端。 在补偿绕组上产生的电压导致磁敏元件上的电压，并补偿电流中产生的相位滞后，从而延长电路的精确频率响应。

    Differential amplifier circuit
    33.
    发明授权
    Differential amplifier circuit 失效
    差分放大电路

    公开(公告)号：US3882409A

    公开(公告)日：1975-05-06

    申请号：US46316274

    申请日：1974-04-22

    申请人： SONY CORP

    发明人： YAGI ATSUO

    IPC分类号： H03F1/30 ,  H01L27/22 ,  H03F3/45 ,  H03F15/00

    CPC分类号： H03F3/45076 ,  H01L27/22

    摘要： In a differential amplifier circuit having first and second field effect transistors connected in parallel to operate differentially according to differential input signal voltages applied to the respective gate electrodes thereof; a third field effect transistor is connected in series with the parallel circuit of the first and second field effect transistors to operate as a current source or sink, a feedback loop is provided from the drain electrode of the first field effect transistor to the gate electrode of the third field effect transistor, and an output signal is derived from the drain electrode of the second field effect transistor, so that the feedback loop operates as a negative feedback circuit in respect to temperature for stabilizing the circuit and the feedback loop further operates as a positive feedback circuit for signals to increase the gain of the circuit. The circuit configuration is particularly well suited to be formed, together with other circuits, as an integrated circuit on a single semiconductor wafer.

    摘要翻译： 在具有并联连接的第一和第二场效应晶体管的差分放大器电路中，根据施加到其各个栅电极的差分输入信号电压来差分地工作; 第三场效应晶体管与第一和第二场效应晶体管的并联电路串联连接以作为电流源或吸收器工作，从第一场效应晶体管的漏电极到栅极电极提供反馈环路 第三场效应晶体管和输出信号从第二场效应晶体管的漏极导出，使得反馈环路作为用于稳定电路的温度的负反馈电路而工作，并且反馈环路进一步作为 正反馈电路用于信号增加电路的增益。 电路配置特别适合于与其它电路一起形成为单个半导体晶片上的集成电路。

    Hall-effect amplifying device with temperature compensated characteristic
    34.
    发明授权
    Hall-effect amplifying device with temperature compensated characteristic 失效
    具有温度补偿特性的霍尔效应放大器件

    公开(公告)号：US3613021A

    公开(公告)日：1971-10-12

    申请号：US3613021D

    申请日：1969-02-07

    申请人： SIEMENS AG

    发明人： SCHEIDT CHRISTIAN

    IPC分类号： H03F1/34 ,  H03F1/36 ,  H03F15/00

    CPC分类号： H03F1/34 ,  H03F1/36

    摘要： A Hall-effect amplifying device comprising a Hall generator and an electronic amplifier is provided with a feedback resistor circuit which connects the amplifier output directly with one of the two Hall-voltage electrodes of the Hall generator. The amplifier in this device is an electronic direct-current amplifier of high-ohmic input resistance and high no-load gain. The resistance of the feedback connection is two or more orders of magnitude higher than the internal resistance between the Hall-voltage electrodes of the Hall generator.

    Electrical impedance converting networks
    35.
    发明授权
    Electrical impedance converting networks 失效
    电阻抗转换网络

    公开(公告)号：US3573647A

    公开(公告)日：1971-04-06

    申请号：US3573647D

    申请日：1969-02-07

    申请人： HER MAJESTY S POSTMASTER GERER

    发明人： ANTONIOU ANDREAS

    IPC分类号： H03H11/42 ,  H03F1/00 ,  H03F15/00

    CPC分类号： H03H11/42

    摘要： This specification describes networks having gyrator properties. Each network comprises two differential amplifiers, and four resistors (conveniently equal) connected in positive and negative feedback paths about the amplifiers. The feedback connections are such that the networks are unconditionally stable. When a network is capacitively terminated it input port impedance is inductive. If in each of a group of capacitively terminated networks one of the feedback resistors is replaced by one of a group of input ports of a network of resistors the input ports of the gyrator networks simulate corresponding input ports of a network of inductors topologically and proportionally the same as the resistor network.