公开(公告)号：US20190190470A1

公开(公告)日：2019-06-20

申请号：US16322053

申请日：2017-07-28

申请人： Knick Elektronische Messgeräte GmbH & Co. KG

发明人： Klaus BACHUS ,  Harald ZANK

IPC分类号： H03F3/387 ,  H03F3/68 ,  H03G3/02 ,  G01R15/20

CPC分类号： H03F3/387 ,  G01R15/18 ,  G01R15/20 ,  G01R15/22 ,  H03F3/38 ,  H03F3/68 ,  H03F2200/171 ,  H03F2200/228 ,  H03F2200/273 ,  H03F2200/276 ,  H03F2200/375 ,  H03G3/02

摘要： An isolation amplifier includes an input circuit at high voltage potential with an input for a measurement signal to be transmitted, an input circuit configuration providing a coupling section signal representing the measurement signal, and a high-voltage-side control unit for driving the input circuit, a galvanically isolating coupling section for the potential-free transmission of the coupling section signal to an output circuit at low-voltage potential with an output circuit configuration for generating an output signal from the transmitted coupling section signal, an output for the output signal and at least one low-voltage-side control unit for generating control signals, input elements for inputting control commands and/or parameters into the high-voltage-side control unit, a low-voltage-side arrangement of all the input elements provided for the parameterization of the high-voltage-side control unit, exclusively in a low-voltage circuit, and a galvanically isolating control channel for transmitting the parameters for driving the input circuit.

公开(公告)号：US5017885A

公开(公告)日：1991-05-21

申请号：US590551

申请日：1990-09-28

申请人： Adel A. M. Saleh

发明人： Adel A. M. Saleh

IPC分类号： H01S5/0683 ,  H01S5/50 ,  H03F1/02 ,  H03F1/32 ,  H03F3/08

CPC分类号： H03F1/32 ,  H01S5/0683 ,  H01S5/50 ,  H03F1/0266 ,  H03F3/087 ,  H03F2200/192 ,  H03F2200/276

摘要： An improved optical amplifier is disclosed with reduced signal-induced, deleterious, nonlinear effects, such as crosstalk, inter-modulation distortion and other saturation-induced effects. The invention comprises an optical amplifier with a compensation loop, such as a feed-forward or a feed-backward loop. This loop provides additional pumping to the gain medium associated with the amplifier, thereby compensating for what would otherwise be deleterious, signal-induced variations in the gain of the optical amplifier.

摘要翻译： 公开了一种改进的光放大器，其具有减少的信号诱导的，有害的非线性效应，例如串扰，互调失真和其它饱和引起的影响。 本发明包括具有补偿回路的光放大器，例如前馈或反馈回路。 该环路向与放大器相关联的增益介质提供额外的泵浦，从而补偿否则将是有害的信号引起的光放大器的增益变化。

公开(公告)号：US08212613B1

公开(公告)日：2012-07-03

申请号：US13237979

申请日：2011-09-21

申请人： Wen-Hsiung Hsieh

发明人： Wen-Hsiung Hsieh

IPC分类号： H03F3/38

CPC分类号： H03F3/2171 ,  H03F1/3205 ,  H03F3/2173 ,  H03F3/393 ,  H03F2200/273 ,  H03F2200/276 ,  H03F2200/351 ,  H03F2200/537

摘要： A switching amplifying method or a switching amplifier for obtaining one or more than one linearly amplified replicas of an input signal, is highly efficient, and does not have the disadvantage of “dead time” problem related to the class D amplifiers. Another aspect of the present invention provides a switching amplifier that is completely off when there is no input signal. Yet another aspect of the present invention provides a switching amplifier for obtaining a plurality of different linearly amplified replicas of the input signal, and adds more slave outputs easily and economically.

摘要翻译： 用于获得输入信号的一个或多个线性放大副本的开关放大方法或开关放大器是高效的，并且不具有与D类放大器相关的“死区时间”问题的缺点。 本发明的另一方面提供一种当没有输入信号时完全关闭的开关放大器。 本发明的另一方面提供一种用于获得输入信号的多个不同线性放大副本的开关放大器，并且容易且经济地增加了更多的从属输出。

公开(公告)号：US6118336A

公开(公告)日：2000-09-12

申请号：US183879

申请日：1998-10-30

申请人： Stuart W. Pullen ,  Donald R. Preslar

发明人： Stuart W. Pullen ,  Donald R. Preslar

IPC分类号： H03F1/30 ,  H03F1/52 ,  H03F3/217 ,  H03F3/38

CPC分类号： H03F1/523 ,  H03F1/305 ,  H03F3/2171 ,  H03F2200/276

摘要： A class D modulator 100 is self oscillating. It includes an input stage 110, an operational amplifier 120, an integrator 130 and a pulse width modulator 140. A start-up generator 22 generates signals ENABLE and MUTE. The MUTE signal is connected to the input stage 110 to prevent any unwanted, initial sound. The ENABLE signal connects a start-up voltage source to the integrator 130 to set the initial voltage for integration. The ENABLE signal is coupled to a dead time control circuit 16 which controls the operation of the output power transistors 42, 44 to assure that the low side power transistor 44 is turned on before the high side transistor 42.

摘要翻译： D类调制器100是自振荡的。 它包括输入级110，运算放大器120，积分器130和脉冲宽度调制器140.启动发生器22产生信号ENABLE和MUTE。 MUTE信号连接到输入级110以防止任何不需要的初始声音。 ENABLE信号将启动电压源连接到积分器130以设置用于积分的初始电压。 ENABLE信号耦合到死区时间控制电路16，死区时间控制电路16控制输出功率晶体管42,44的操作，以确保低侧功率晶体管44在高侧晶体管42之前导通。

公开(公告)号：US09118280B2

公开(公告)日：2015-08-25

申请号：US14041157

申请日：2013-09-30

申请人： Raytheon Company

发明人： Joe A. Ortiz

IPC分类号： H03F3/185 ,  H03F3/21 ,  H03F1/48 ,  H03F3/08 ,  H03F3/19 ,  H03F3/30

CPC分类号： H03F3/185 ,  H03F1/483 ,  H03F3/085 ,  H03F3/19 ,  H03F3/211 ,  H03F3/3037 ,  H03F2200/03 ,  H03F2200/18 ,  H03F2200/276 ,  H03F2203/21131 ,  H03F2203/30021 ,  H03F2203/30033 ,  H03F2203/30066

摘要： A high voltage amplifier and a method of assembling and of operating a high voltage amplifier are described. The device includes a first metal-oxide-semiconductor field-effect transistor (MOSFET) driven by a first gate drive circuit. The device also includes a second MOSFET driven by a second gate drive circuit and a first optocoupler coupled to the second gate drive circuit. The first MOSFET and the second MOSFET of the high voltage amplifier drive a first output voltage.

摘要翻译： 描述高压放大器以及组装和操作高压放大器的方法。 该器件包括由第一栅极驱动电路驱动的第一金属氧化物半导体场效应晶体管（MOSFET）。 该器件还包括由第二栅极驱动电路驱动的第二MOSFET和耦合到第二栅极驱动电路的第一光耦合器。 高压放大器的第一个MOSFET和第二个MOSFET驱动第一个输出电压。

公开(公告)号：US20150091654A1

公开(公告)日：2015-04-02

申请号：US14041157

申请日：2013-09-30

申请人： Raytheon Company

发明人： Joe A. Ortiz

IPC分类号： H03F3/185 ,  H03F3/21

CPC分类号： H03F3/185 ,  H03F1/483 ,  H03F3/085 ,  H03F3/19 ,  H03F3/211 ,  H03F3/3037 ,  H03F2200/03 ,  H03F2200/18 ,  H03F2200/276 ,  H03F2203/21131 ,  H03F2203/30021 ,  H03F2203/30033 ,  H03F2203/30066

摘要： A high voltage amplifier and a method of assembling and of operating a high voltage amplifier are described. The device includes a first metal-oxide-semiconductor field-effect transistor (MOSFET) driven by a first gate drive circuit. The device also includes a second MOSFET driven by a second gate drive circuit and a first optocoupler coupled to the second gate drive circuit. The first MOSFET and the second MOSFET of the high voltage amplifier drive a first output voltage.

摘要翻译： 描述高压放大器以及组装和操作高压放大器的方法。 该器件包括由第一栅极驱动电路驱动的第一金属氧化物半导体场效应晶体管（MOSFET）。 该器件还包括由第二栅极驱动电路驱动的第二MOSFET和耦合到第二栅极驱动电路的第一光耦合器。 高压放大器的第一个MOSFET和第二个MOSFET驱动第一个输出电压。

公开(公告)号：US5517154A

公开(公告)日：1996-05-14

申请号：US372545

申请日：1995-01-13

申请人： Clifford E. Baker ,  Michael P. Khaw

发明人： Clifford E. Baker ,  Michael P. Khaw

IPC分类号： G01R13/22 ,  G01R1/30 ,  G01R15/24 ,  G01R19/00 ,  H03F1/42 ,  H03F3/38 ,  H03F3/68 ,  H03H11/02 ,  G01R13/20 ,  H03F17/00

CPC分类号： H03F3/38 ,  G01R15/24 ,  H03F2200/273 ,  H03F2200/276 ,  H03F2200/39

摘要： A split-path isolation amplifier (10) employs a transformer (30) in a high path (26) and a single-input, dual-output closed-loop optocoupler (66) in a low path (24) to achieve a flat, wide frequency response without need for frequency compensation adjustments. In a low path frequency region (106), the optocoupler provides all or most of the signal to the output. The isolation amplifier employs a substantially overlapped crossover frequency region (104) in which the high path signal is applied to a primary winding (28) of the transformer, and the low path signal is applied differentially to secondary windings (40, 42) of the transformer. At frequencies below the crossover frequency range, the signal from the optocoupler dominates as the signal coupled from the primary winding rolls off. At frequencies above the crossover frequency range, the signal coupled from the primary winding dominates as the signal from the optocoupler rolls off. At frequencies within the crossover frequency range magnetic flux components generated by the primary and secondary transformer windings co-act to provide a combined output signal having a flat frequency response. The only adjustments are those required to match the gain of the low path to the gain of the high path and to compensate for any offset in the low path.

摘要翻译： 分路隔离放大器（10）在高路径（26）中使用变压器（30）和在低路径（24）中的单输入双输出闭环光耦合器（66），以实现平坦， 宽频率响应，无需频率补偿调整。 在低路径频率区域（106）中，光耦合器向输出端提供全部或大部分信号。 隔离放大器使用基本上重叠的交越频率区域（104），其中高路径信号被施加到变压器的初级绕组（28），并且低路径信号被差分地施加到第二绕组（40,42） 变压器。 在低于交叉频率范围的频率下，从初级绕组耦合的信号滚降时，来自光耦合器的信号占主导地位。 在高于交叉频率范围的频率下，从初级绕组耦合的信号由光耦合器的信号消失。 在交叉频率范围内的频率，由主变压器绕组和次级变压器绕组产生的磁通量分量协同提供具有平坦频率响应的组合输出信号。 唯一的调整是将低路径的增益与高路径的增益相匹配的调整，并补偿低路径中的任何偏移量。

公开(公告)号：US4571551A

公开(公告)日：1986-02-18

申请号：US584363

申请日：1984-02-28

申请人： Wesley H. Trager

发明人： Wesley H. Trager

IPC分类号： H03F3/217 ,  H03F3/38

CPC分类号： H03F3/2171 ,  H03F2200/276

摘要： A flyback modulated switching power amplifier is described. The amplifier employs a waveform generator to produce an input signal and power switches capable of controlled conduction in one direction and uncontrolled conduction in the other. An inductor is coupled to the power source through the power switches so that flyback current can flow through a switch in its uncontrolled direction from the inductor when the switch is turned off. A conduction feedback circuit detects conduction by the switches and a comparator detects whether the output is "too high" or "too low" relative to the input signal. A logic control selectively activates the switches to control the output voltage, but not until the last switch to be turned off has stopped all conduction, including flyback conduction.

摘要翻译： 描述了反激调制开关功率放大器。 放大器采用波形发生器产生输入信号和能够在一个方向上受控导通的功率开关，另一个方面产生不受控制的导通。 电感器通过功率开关耦合到电源，使得当开关断开时，反激电流可以以不受控制的方向流过开关。 导通反馈电路通过开关检测导通，并且比较器检测输出相对于输入信号是否“过高”或“过低”。 逻辑控制选择性地激活开关以控制输出电压，但直到最后一个要关断的开关已经停止所有导通，包括反激式导通。