公开(公告)号：US4309676A

公开(公告)日：1982-01-05

申请号：US185892

申请日：1980-09-10

申请人： Hubert Martin ,  Gerald W. Beene

发明人： Hubert Martin ,  Gerald W. Beene

IPC分类号： H03G7/00 ,  H04B1/64

CPC分类号： H03G7/001 ,  H04B1/64

摘要： An instantaneous compressor and an instantaneous expandor both of which use the logarithmic characteristics of diodes to provide compression and expansion, respectively, of uncompressed analog PAM signals and compressed analog PAM signals. Both the compressor and expandor also include circuitry having a temperature dependent gain characteristic. The signal at the compressor output is a temperature independent compressed analog signal which follows the compressor's logarithmic encoding characteristic. The signal at the output of the expandor is a temperature independent uncompressed analog signal which is substantially identical to the analog signal at the compressor input.

摘要翻译： 瞬时压缩机和瞬时膨胀器都使用二极管的对数特性分别提供未压缩模拟PAM信号和压缩模拟PAM信号的压缩和扩展。 压缩机和膨胀器都包括具有温度依赖增益特性的电路。 压缩机输出端的信号是一个温度无关的压缩模拟信号，跟随压缩机的对数编码特性。 扩展器输出端的信号是与压缩机输入端的模拟信号基本相同的独立于温度的未压缩模拟信号。

公开(公告)号：US4027224A

公开(公告)日：1977-05-31

申请号：US409093

申请日：1973-10-24

申请人： Gerald W. Beene

发明人： Gerald W. Beene

IPC分类号： H02M3/00 ,  H04M19/08 ,  G05F3/14

CPC分类号： H04M19/08 ,  H02M3/00

摘要： A post regulated switching regulating d.c.-to-d.c. converter with pulse width modulation for limiting the regulated output voltage to a magnitude which is just slightly higher than the normal regulated value if the regulation capabilities of the converter are exceeded either by increasing the input voltage above a certain amount for a given load or by decreasing the load resistance below a minimum value.

摘要翻译： 后调节开关调节直流到d.c。 转换器，其具有脉冲宽度调制，用于将调节的输出电压限制到略高于正常调节值的幅度，如果通过将输入电压增加到给定负载一定量以上或通过减小转换器的调节能力 负载电阻低于最小值。

公开(公告)号：US6108183A

公开(公告)日：2000-08-22

申请号：US237984

申请日：1999-01-25

申请人： Gerald W. Beene

发明人： Gerald W. Beene

IPC分类号： H04M3/18 ,  H02H3/00

CPC分类号： H04M3/18 ,  H04M2201/80

摘要： A current limiter is provided that includes a power switch for receiving input power from a power source and passing at least a portion of the input power to an output, a current sense mechanism coupled to the power switch for sensing current flowing through the current limiter and for providing a current flow signal related to the current flow through the current limiter, and a control mechanism coupled to the power switch that causes the power switch to reduce the current flow when the current flow signal indicates that the current flow exceeds a first current flow level. In one embodiment the current limiter may include a voltage sense mechanism that senses the voltage drop across the input to output of the device and use a reference voltage and a control loop to maintain the voltage drop relatively constant at all load currents. In another embodiment the current limiter may include a timing mechanism that provides a timing signal that is used by the control mechanism to cause the power switch to block power transmission to the load. In yet another embodiment the current limiter may include a temperature sensing mechanism that provides a first temperature signal that is used by the control mechanism to cause the power switch to block power transmission when the temperature signal indicates that a monitored temperature exceeds a reference temperature. Optionally, the current limiter may include a surge voltage protection mechanism that blocks high voltage power surges from the output. Also, the current limiter may include short circuit protection means.

摘要翻译： 提供了限流器，其包括用于从电源接收输入功率并将至少一部分输入功率传递到输出的电源开关，耦合到电源开关的电流感测机构，用于感测流过限流器的电流;以及 用于提供与通过限流器的电流相关的电流流动信号;以及耦合到电源开关的控制机构，当电流流动信号指示电流超过第一电流时，电流开关减小电流 水平。 在一个实施例中，电流限制器可以包括电压感测机构，其感测输入到设备的输出端的电压降，并且使用参考电压和控制回路来在所有负载电流下保持电压降相对恒定。 在另一个实施例中，电流限制器可以包括定时机构，其提供由控制机构用于使电源开关阻断向负载的电力传输的定时信号。 在又一个实施例中，限流器可以包括温度感测机构，其提供当温度信号指示所监视的温度超过参考温度时由控制机构使用的第一温度信号以使功率开关阻止功率传输。 可选地，电流限制器可以包括阻止来自输出端的高压功率浪涌的浪涌电压保护机构。 此外，限流器可以包括短路保护装置。

公开(公告)号：US06385030B1

公开(公告)日：2002-05-07

申请号：US09388630

申请日：1999-09-02

申请人： Gerald W. Beene

发明人： Gerald W. Beene

IPC分类号： H02H900

CPC分类号： H04M3/18

摘要： A surge protection circuit is coupled to the wires that transport digital signals between a local unit, such as an ONU, and a remote unit, such as a NID. The surge protection circuit includes a coordinating impedance having a capacitive element connected in series with the twisted pair wires coupling the ONU to the NID. The coordinating impedance couples a primary shunt protector and a secondary shunt protector. Various embodiments of the surge protection circuit comprise coordinating impedance devices including a series connected: capacitor and resistor, capacitor and inductor, and capacitor, inductor, and resistor. By using a capacitive element in the coordinating impedance, the signal loss through the surge protector is significantly reduced for 10 Base-T and 100 Base-T Ethernet systems. Further, the added inductance may become part of an integrated low-pass filter that further reduces signal loss at high frequencies.

摘要翻译： 浪涌保护电路耦合到在本地单元（例如ONU）和诸如NID的远程单元之间传送数字信号的电线。 浪涌保护电路包括具有与将ONU耦合到NID的双绞线串联连接的电容元件的协调阻抗。 协调阻抗耦合主分流保护器和次级分流保护器。 浪涌保护电路的各种实施例包括协调阻抗器件，包括串联连接的电容器和电阻器，电容器和电感器以及电容器，电感器和电阻器。 通过在协调阻抗中使用电容元件，对于10 Base-T和100 Base-T以太网系统，通过浪涌保护器的信号损耗显着降低。 此外，增加的电感可能成为集成低通滤波器的一部分，进一步降低了高频下的信号损耗。

公开(公告)号：US5260996A

公开(公告)日：1993-11-09

申请号：US624860

申请日：1990-12-10

申请人： Philip L. Dillon ,  Gerald W. Beene

发明人： Philip L. Dillon ,  Gerald W. Beene

IPC分类号： H02M3/335 ,  H04M19/02 ,  H04M19/04 ,  H04M3/00 ,  H04M1/00

CPC分类号： H04M19/04 ,  H02M3/335 ,  H04M19/02

摘要： An electronic ringing generator circuit with provision for power efficient current limiting and preservation of sinusoidal or near sinusoidal output waveform under overload conditions. A pulsewidth modulated DC-DC power convertor produces supply voltages for a linear class B power amplifier which has a low frequency low level sinusoidal signal applied to its input through a first controllable attenuator. The DC-DC convertor's reference input is also driven through a second controllable attenuator which is coordinated with the first controllable attenuator. The attenuators are operated in such a way that if the amplifier's output current exceeds a predetermined value, both the input signal and amplifier supply voltages are reduced in a coordinated manner so that simultaneously the output AC waveshape is preserved and the amplifier continues to operate at or very near optimum efficiency. The amplifier may be operated to produce a sinusoidal output (crest factor =1.41) or a slightly clipped sinewave with a specified minimum crest factor less than 1.41.

摘要翻译： 一种电子振铃发生器电路，用于在过载条件下功率有效的电流限制和保存正弦或近似正弦输出波形。 脉冲宽度调制的DC-DC功率转换器为线性B类功率放大器产生电源电压，其具有通过第一可控衰减器施加到其输入的低频低电平正弦信号。 DC-DC转换器的参考输入也通过与第一可控衰减器协调的第二可控衰减器驱动。 衰减器以这样的方式操作，即如果放大器的输出电流超过预定值，输入信号和放大器电源电压都以协调的方式被减少，从而同时保持输出AC波形并且放大器继续在 非常接近最佳效率。 可以对放大器进行操作，以产生正弦输出（波峰因数= 1.41）或稍微削波的正弦波，其规定的最小波峰因数小于1.41。

公开(公告)号：US4343971A

公开(公告)日：1982-08-10

申请号：US234711

申请日：1981-02-17

申请人： Gerald W. Beene

发明人： Gerald W. Beene

IPC分类号： H04M19/00

CPC分类号： H04M19/008

摘要： A circuit for supplying drop current to the subscriber connected to the remote terminal of a central office powered telecommunications system. A switching regulator is included in the circuit for generating the drop current. The switching regulator adjusts its conduction time as a function of the length of the loop connecting the subscriber to the terminal such that the subscriber consumes only that power required by the loop length. The switching regulator operates in response to a reference current generated by a control circuit. A central office supplied signal on the transmission means connecting the central office to the terminal is used for transferring power to the terminal. The amplitude of that signal at the terminal varies with system load. When that amplitude deviates in a predetermined direction from a reference signal of predetermined amplitude the reference current and therefore the drop current to all off hook subscribers is uniformly decreased by an amount which allows the power transferring signal amplitude to be maintained substantially equal to the amplitude of the reference signal.

摘要翻译： 用于向连接到中央局供电的电信系统的远程终端的用户提供放电电流的电路。 电路中包括一个开关稳压器，用于产生下降电流。 开关稳压器根据将用户连接到终端的环路的长度调节其导通时间，使得用户仅消耗环路长度所需的功率。 开关稳压器响应于由控制电路产生的参考电流而工作。 将中心局连接到终端的传输装置上的中心局提供的信号用于向终端传送电力。 端子处的信号振幅随系统负载而变化。 当该幅度在预定方向上从预定幅度的参考信号偏离时，参考电流以及因此到所有摘机用户的下降电流被均匀地减小了允许功率传递信号幅度基本上等于 参考信号。