公开(公告)号：US4868429A

公开(公告)日：1989-09-19

申请号：US325095

申请日：1989-03-15

申请人： Jorg Wolber ,  Klaus G. Kroner

发明人： Jorg Wolber ,  Klaus G. Kroner

IPC分类号： G05F3/24 ,  H03G11/00

CPC分类号： H03G11/00

摘要： A circuit arrangement for deriving an output current from an input current, which output current is limited to a current range which is bounded by at least one limit value. It is possible to limit high-frequency currents by avoiding current distributions or saturation effects in that the circuit arrangement comprises a current combination element (1) for forming an at least substantially linear combination of the input current (IE), the output current (IA) and a fixed reference current (IR) and by at least a rectifier circuit (2) arranged in the current path of the input current (IE) and/or the output current (IA).

摘要翻译： 用于从输入电流导出输出电流的电路装置，该输出电流被限制在由至少一个极限值限定的电流范围。 可以通过避免电流分布或饱和效应来限制高频电流，因为电路装置包括电流组合元件（1），用于形成输入电流（IE），输出电流（IA），输出电流 ）和固定的参考电流（IR）以及至少布置在输入电流（IE）和/或输出电流（IA）的电流路径中的整流器电路）。

公开(公告)号：US4812908A

公开(公告)日：1989-03-14

申请号：US180587

申请日：1988-04-07

申请人： Vincentius T. M. Frequin

发明人： Vincentius T. M. Frequin

IPC分类号： H03G3/20 ,  H03G11/00 ,  H04N5/52

CPC分类号： H03G3/3052 ,  H03G11/002 ,  H03G3/3068 ,  H04N5/52

摘要： An automatic gain control circuit having different control loops which must each be controlled in a different control current range by one and the same control current, includes a current threshold circuit having an input to which a threshold current source (7) and the emitters of a complementary transistor pair are connected so that the collector current of each transistor can control a control loop.

摘要翻译： 具有不同控制回路的自动增益控制电路必须分别通过一个相同的控制电流控制在不同的控制电流范围内，包括具有输入的电流阈值电路，阈值电流源（7）和发射极 互补晶体管对被连接，使得每个晶体管的集电极电流可以控制控制回路。

公开(公告)号：US4748419A

公开(公告)日：1988-05-31

申请号：US856763

申请日：1986-04-28

申请人： Thomas A. Somerville

发明人： Thomas A. Somerville

IPC分类号： H03F3/34 ,  H03F3/38 ,  H03G11/00 ,  H03H11/12 ,  H03K5/02 ,  H03K5/26

CPC分类号： H03H11/1213 ,  H03F3/38 ,  H03G11/002 ,  H03H11/126 ,  H03K5/02 ,  H03K5/26

摘要： A low cost, high frequency isolation amplifier includes a first voltage-to-frequency converter producing a first pair of complementary pulses in response to an analog input signal and applying them to a pair of low capacitance capacitors constituting the isolation barrier. The isolation barrier differentiates edges of the first pair of pulse signals and applies the resulting signals to inputs of a sense amplifier including a differential amplifier, a pair of comparators, and a flip-flop to precisely reconstruct the first pair of complementary pulse signals, which then are fed into a decoder circuit including a phase locked loop. The phase locked loop includes a phase detector receiving the reconstructed pair of complementary pulse signals and a second pair of complementary pulse signals produced by a second voltage-to-frequency converter. The output of the phase detector is integrated by a filter circuit, the output of which produces a voltage that represents the analog input signal and causes the output of the second voltage-to-frequency converter to be synchronized with the second pair of complementary pulse signals when the analog output signal matches the analog input signal.

摘要翻译： 低成本高频隔离放大器包括：第一电压 - 频率转换器，响应于模拟输入信号产生第一对互补脉冲，并将其施加到构成隔离屏障的一对低电容电容器。 隔离屏障区分第一对脉冲信号的边缘，并将结果信号施加到包括差分放大器，一对比较器和触发器的读出放大器的输入端，以精确地重构第一对互补脉冲信号，其中 然后被馈送到包括锁相环的解码器电路。 锁相环包括接收重建的互补脉冲信号对的相位检测器和由第二电压 - 频率转换器产生的第二对互补脉冲信号。 相位检测器的输出由滤波电路集成，滤波电路的输出产生表示模拟输入信号的电压，并使第二电压 - 频率转换器的输出与第二对互补脉冲信号同步 当模拟输出信号与模拟输入信号匹配时。

公开(公告)号：US4588956A

公开(公告)日：1986-05-13

申请号：US673936

申请日：1984-11-21

申请人： Patrick de Corlieu ,  Jacques Bursztejn

发明人： Patrick de Corlieu ,  Jacques Bursztejn

IPC分类号： H03F3/68 ,  H03G7/00 ,  H03G11/00 ,  H03G11/06

CPC分类号： H03G11/06 ,  H03G11/002 ,  H03G7/001

摘要： An amplifier-limiter device intended to amplify a received signal up to a predetermined value. The device comprises 2n integrated circuits of the emitter coupled logic type which are connected in series, these integrated circuits forming n successive pairs and each pair having associated with it a compensating circuit which compensates for the linear distortion caused by the integrated circuits of the pair.

摘要翻译： 一种用于将接收到的信号放大到预定值的放大器限幅器装置。 该装置包括串联连接的发射极耦合逻辑类型的2n个集成电路，这些集成电路形成n个连续对，并且每对具有相关联的补偿电路补偿由该对的集成电路引起的线性失真。

公开(公告)号：US4525857A

公开(公告)日：1985-06-25

申请号：US646793

申请日：1984-09-04

申请人： Robert A. Orban

发明人： Robert A. Orban

IPC分类号： H03G7/00 ,  H03G11/00 ,  H03G5/00

CPC分类号： H03G11/00 ,  H03G7/002

摘要： A peak limiter is described which employs the Hilbert transform. Effectively distinct processing occurs for low frequency and high frequency signals and harmonic distortion results only when the limiter is excited by high frequencies.

摘要翻译： 描述了使用希尔伯特变换的峰值限制器。 只有当限制器被高频激励时，才能对低频和高频信号进行有效的不同处理。

公开(公告)号：US4517534A

公开(公告)日：1985-05-14

申请号：US512869

申请日：1983-07-11

申请人： Stephen F. Smith

发明人： Stephen F. Smith

IPC分类号： H03G3/20 ,  H03G7/00 ,  H03G11/00 ,  H04B1/64 ,  H03K5/153

CPC分类号： H03G3/3005 ,  H03G11/00 ,  H03G7/002

摘要： Several circuit detectors and noise reduction networks with circuit detectors are disclosed. Detectors and networks according to the invention generally include a discharge diode placed within a feedback loop of an operational amplifier so that the hold time of the system is unaffected by the detector level. Circuits according to the invention may also include a conductor to provide a dynamically controlled charge and/or discharge path in combination with an active signal amplifying device.

摘要翻译： 公开了具有电路检测器的几个电路检测器和降噪网络。 根据本发明的检测器和网络通常包括放置在运算放大器的反馈回路内的放电二极管，使得系统的保持时间不受检测器电平的影响。 根据本发明的电路还可以包括导体，以提供与有源信号放大装置结合的动态控制的充电和/或放电路径。

公开(公告)号：US4511865A

公开(公告)日：1985-04-16

申请号：US581833

申请日：1984-02-21

申请人： Samuel Dixon, Jr.

发明人： Samuel Dixon, Jr.

IPC分类号： H01P1/23 ,  H03G11/00

CPC分类号： H03G11/006 ,  H01P1/23

摘要： A millimeter wave planar slot excited image guide ferrite power limiter crising a length of dielectric transmission line or waveguide for millimeter wave frequencies located on a relatively thin conductive ground plane, forming thereby an image guide. The ground plane includes a plurality of selectively positioned slots along the length of the ground plane under the dielectric waveguide in which bodies of high anisotropy uniaxial barium ferrite material are placed and which collectively act as a passive ferrite power limiter when biased by an externally applied biasing magnetic field. A biasing magnetic field is provided by a pair of rare earth permanent magnets located along the sides of the image guide perpendicular to the orientation of the RF magnetic fields of the signal propagating down the dielectric waveguide. This leaves the top surface of the image dielectric guide accessible for other integrated circuit fabrication.

摘要翻译： 一种毫米波平面槽激励图像引导铁氧体功率限制器，其包括位于相对薄的导电接地平面上的毫米波频率的介电传输线或波导的长度，从而形成图像引导件。 接地平面包括沿着介电波导下的接地平面的长度的多个选择性定位的槽，其中放置有高各向异性单轴钡铁氧体材料的主体，并且当通过外部施加的偏压偏置时它们共同作为被动铁氧体功率限制器 磁场。 偏置磁场由垂直于在介质波导下传播的信号的RF磁场的取向垂直于图像导向器的侧面的一对稀土永磁体提供。 这使得图像介质引导件的顶表面可用于其他集成电路制造。

公开(公告)号：US4485341A

公开(公告)日：1984-11-27

申请号：US402496

申请日：1982-07-28

申请人： Dennis L. Welty ,  Don W. Zobel

发明人： Dennis L. Welty ,  Don W. Zobel

IPC分类号： H03F3/26 ,  H03G11/00 ,  H04B1/58 ,  G05F3/20

CPC分类号： H04B1/58 ,  H03F3/26 ,  H03G11/002

摘要： A circuit for limiting the magnitude of current sourced from a first load circuit to a second load circuit to a predetermined value. The circuit includes a current sourcing circuit for sourcing current from the first load circuit to the second and a feedback circuit which is responsive to the magnitude of the current sourced to the second load circuit reaching the predetermined value for supplying any additional current that the second load circuit may require while inhibiting additional current from being sourced from the first load circuit.

摘要翻译： 一种用于限制从第一负载电路到第二负载电路的电流的大小达到预定值的电路。 电路包括用于从第一负载电路向第二负载电路提供电流的电流源电路和响应于来自第二负载电路的电流的幅度达到预定值的反馈电路，以提供任何附加电流，第二负载 电路可能需要同时抑制额外的电流来自第一负载电路。

公开(公告)号：US4441199A

公开(公告)日：1984-04-03

申请号：US391845

申请日：1982-06-24

申请人： John K. Chester ,  Eric Small ,  Eric D. Stoll

发明人： John K. Chester ,  Eric Small ,  Eric D. Stoll

IPC分类号： H03G11/00 ,  H04H5/00

CPC分类号： H03G11/00

摘要： Two parallel signal paths carry a composite signal having a narrow-band component such as an FM station's composite signal. The first path includes a notch filter that removes the narrow-band component, such as the FM stereo pilot tone, from the composite signal and also includes a reciprocal clipper coupled to the output of the notch filter that selects peaks beyond given maximum and minimum limits from the remainder of the composite signal. These peaks are then effectively subtracted from the corresponding peaks of the composite signal in the second path and the resultant signal is used to modulate the station's carrier frequency. The resultant signal is an amplitude limited composite signal in which the narrow-band component is substantially unimpaired even though the composite signal has been amplitude limited.

摘要翻译： 两个并行信号路径携带具有诸如FM电台复合信号的窄带分量的复合信号。 第一路径包括陷波滤波器，其从复合信号中去除窄带分量，例如FM立体声导频音，并且还包括耦合到陷波滤波器的输出的倒数限幅器，其选择超出给定的最大和最小限度的峰值 从复合信号的其余部分。 然后从第二路径中的复合信号的相应峰值有效地减去这些峰值，并且所得到的信号用于调制站的载波频率。 所得到的信号是幅度有限的复合信号，其中窄带分量基本上未受损，即使复合信号已被幅度限制。

公开(公告)号：US4396879A

公开(公告)日：1983-08-02

申请号：US209136

申请日：1980-11-21

申请人： Wilhelm Weinreich ,  Gerhard Schutz

发明人： Wilhelm Weinreich ,  Gerhard Schutz

IPC分类号： H03G3/20 ,  H03G7/00 ,  H03G11/00 ,  H03K3/57 ,  H05C1/04 ,  H02J15/00

CPC分类号： H03G3/3005 ,  H03G11/00 ,  H03G11/002 ,  H03G7/002 ,  H03K3/57 ,  H05C1/04

摘要： A charging circuit in an electric fence installation, comprising transformer or equivalent circuitry having series and parallel inductances and capacitances, wherein a solid state control switching device is provided in the energization line, which automatically opens the line at the time that the charging of the series capacitance represented by the fence-to-ground capacity is at or nearly at the upper peak value of the transient voltage which occurs.

摘要翻译： 一种电气围栏装置中的充电电路，包括具有串联和并联电感和电容的变压器或等效电路，其中在通电线路中提供固态控制开关装置，其在串联充电时自动打开线路 由栅对地容量表示的电容处于或接近发生的瞬态电压的上峰值。