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    Switching circuits employing field emission devices
    1.
    发明授权
    Switching circuits employing field emission devices 失效
    采用场致发射器件的开关电路

    公开(公告)号：US5155420A

    公开(公告)日：1992-10-13

    申请号：US740265

    申请日：1991-08-05

    Applicant: Robert T. Smith

    Inventor： Robert T. Smith

    IPC: H01J21/10 ,  H03K17/00 ,  H03K17/04 ,  H03K17/54 ,  H03K17/56 ,  H03K19/08 ,  H03K19/20 ,  H03K19/21

    CPC classification number: H03K17/54 ,  H03K17/545

    Abstract: A differential amplifier current steering circuit wherein the active circuit elements are realized as field emission devices (FEDs) which provide for an extended range of operation to include modulation/demodulation applications up to the order of one Terahertz and digital logic function applications up to the order of one hundred gigabits per second. In a particular embodiment of the FED switching circuit vertical integration of selectively interconnected FEDs is employed to provide the desired switching circuit function.

    Pulse modulator gating circuit with trailing edge control
    2.
    发明授权
    Pulse modulator gating circuit with trailing edge control 失效
    具有后沿控制的脉冲调制器门控电路

    公开(公告)号：US4002932A

    公开(公告)日：1977-01-11

    申请号：US620478

    申请日：1975-10-02

    Applicant: Harold Zaslav

    Inventor： Harold Zaslav

    IPC: H03K3/16 ,  H03K17/04 ,  H03K17/54 ,  H03K17/00

    CPC classification number: H03K17/04 ,  H03K17/54 ,  H03K3/16

    Abstract: Herein disclosed is a new and improved pulse modulator comprisng first current gating means for applying a current through a first primary lead of a current transformer during the duration of an applied control signal pulse and second current gating means for applying an oppositely directed current through a second primary lead of the transformer. The current flow through the second primary lead commences at the trailing edge of the control signal pulse and produces a flux which cancels the flux produced by the current through the first primary lead; whereby a high voltage output pulse is produced across the secondary winding of the transformer which accurately reproduces the duration of the applied low voltage control signal pulse.

    Abstract translation: 本文公开了一种新的和改进的脉冲调制器，其包括用于在施加的控制信号脉冲的持续时间期间施加电流通过电流互感器的第一初级引线的电流门控装置，以及用于施加相对定向的电流通过第二电流的第二电流门控装置 变压器的主引线。 通过第二主引线的电流在控制信号脉冲的后沿开始，并产生消除由通过第一主引线的电流产生的磁通的磁通; 由此在变压器的次级绕组上产生高电压输出脉冲，其精确地再现所施加的低电压控制信号脉冲的持续时间。

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