公开(公告)号：EP2109778A1

公开(公告)日：2009-10-21

申请号：EP08707039.7

申请日：2008-01-15

申请人： IC-Haus Gmbh

发明人： KRACK, Bernhard ,  HERZ, Manfred

IPC分类号： G01R31/316 ,  H03F3/72 ,  H03G3/12

CPC分类号： G01R31/316 ,  H03F1/34 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2203/45101 ,  H03F2203/45136 ,  H03F2203/45434 ,  H03F2203/45528 ,  H03F2203/45534 ,  H03F2203/45586

摘要： The invention relates to an integrated amplification circuit that can be tested, in particular, in the event of using a high precision operation amplifier, with offset voltages in the microvolt range. Said integrated circuit comprising at least one operation amplifier (10) and a negative feedback network (40, 50) associated with the operation amplifier (10), can be activated during a test mode of the operation amplifier in order to amplify offset voltages of the operation amplifier.

公开(公告)号：EP1722472A2

公开(公告)日：2006-11-15

申请号：EP06290667.2

申请日：2006-04-24

申请人： LEGRAND FRANCE

发明人： Roth, Jean-Paul ,  Chaure, Christophe ,  Vergne, Raphaël ,  Guitard, Julien ,  Mendez, Pascal

IPC分类号： H03G3/12

CPC分类号： H02G3/123

摘要： La boîte d'encastrement comporte un corps (2), une patte (40), pour serrer une cloison et une vis (16) de commande à pivotement de ladite patte (40) entre une position rétractée et une position sortie. La paroi (40) comporte une fenêtre (12) dont les dimensions sont adaptées à ce que ladite patte (40) passe de l'une à l'autre desdites position rétractée et position sortie, par cette fenêtre (12) et à ce qu'elle présente un bord (22) formant butée pour ladite patte (40) en position rétractée et en position sortie.
Dans le procédé de fabrication de cette boîte (1), lors du moulage dudit corps (2), on moule ladite patte (40) dans sa position rétractée avec plusieurs liens sécables (50) reliant ladite patte audit corps.

摘要翻译： 箱体具有用于锁定隔板的夹具（40）和用于在缩回位置和释放位置之间控制夹具的枢轴的螺钉（16）。 箱的侧壁包括其尺寸适合的窗口（12），使得夹具在两个位置之间通过，其中窗口沿着横向方向从边缘延伸到边缘（22）。 边缘（22）在两个位置形成夹具的止动件。 对于制造配件箱的方法也包括独立权利要求。

公开(公告)号：EP1538744A4

公开(公告)日：2006-06-07

申请号：EP03766762

申请日：2003-08-06

申请人： SONY CORP

发明人： OZAWA MIHO

IPC分类号： H03F1/34 ,  H03F3/45 ,  H03G3/12 ,  H03G3/30 ,  H03H11/12 ,  H04B1/30 ,  H03G3/10

CPC分类号： H03G3/3036 ,  H03F3/45475 ,  H03F3/45973 ,  H03F2200/372 ,  H03F2203/45082 ,  H03F2203/45101 ,  H03F2203/45286 ,  H03G3/3052 ,  H03H11/1291

摘要： A gain-controlled amplifier, a receiver circuit using the gain-controlled amplifier, and a radio communication device having the receiver circuit. The gain-controlled amplifier is compatible with a system that continuously performs reception operation. The gain-controlled amplifier can be corrected against variation of DC offset due to operational conditions, such as temperature and the like. In the gain-controlled amplifier including three cascaded GCA stages (11-13), common feedback circuits (16-18) associated with the respective GCA stages (11-13) keep the center values of DC outputs of the respective GCA stages (11-13) constant, while a DC feedback circuit (19) provided between the output side of the last stage and the input side of the first one of the GCA stages (11-13) changes the DC feedback amount in accordance with a gain control voltage (VG).

摘要翻译： 一种增益控制放大器，能够连续地处理用于执行接收操作的系统，并且能够校正由于诸如温度的操作条件引起的DC偏移的变化; 使用增益控制放大器的接收器电路; 以及安装接收机电路的无线通信装置。 在通过级联连接的三个GCA级（11） - （13）组成的增益控制放大器中，每个GCA级（11） - （13）的输出DC的中心值通过公共反馈保持恒定 电路（16） - （18）对应于每个GCA级（11） - （13）提供，并且DC反馈量根据增益控制电压VG通过DC反馈电路（19 ）设置在GCA级的最后级的输出侧和GCA级的第一级的输入侧之间。

公开(公告)号：EP1324486B1

公开(公告)日：2006-03-15

申请号：EP00962895.9

申请日：2000-09-27

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： MISE, Toshio, c/o Mitsubishi Denki K K ,  TANABE, Tomohiro

IPC分类号： H03F1/32 ,  H03F1/34 ,  H03G1/04 ,  H03G3/12 ,  H03G3/30

CPC分类号： H03F1/345 ,  H03F1/3247 ,  H03F1/34

摘要： A distortion compensation and output control circuit comprises an adder (1) for adding input power and part of negative feedback output power; a variable attenuator (2) for attenuating the power output from the adder (1); a power amplifier (3) for amplifying the power output from the variable attenuator (2) and producing predetermined output power; a variable attenuator (4) for attenuating the output power from the power amplifier (3) for negative feedback to the adder (1); a control circuit (12) for controlling the variable attenuator (4) to obtain predetermined output power; and a control circuit (11) for controlling the variable attenuator (2) to obtain a loop gain corresponding to the predetermined output power.

公开(公告)号：EP0393842A3

公开(公告)日：1991-08-07

申请号：EP90302871

申请日：1990-03-16

申请人： DELCO ELECTRONICS CORPORATION

发明人： ANDERSON, FRED JAY ,  MANLOVE, GREGORY JOHN ,  KENNEDY, RICHARD ALBERT ,  MARRAH, JEFFREY JOSEPH

IPC分类号： H03G3/12 ,  H03G3/20 ,  H03G3/34 ,  H04B1/10 ,  H04B1/16 ,  H04H20/88

CPC分类号： H03G3/301 ,  H03G3/344 ,  H03G3/345 ,  H04B1/10 ,  H04B1/1669

摘要： A closed-loop attenuator for an FM stereo receiver provides attenuation to a L+R audio signal in a controlled and predictable reaction to an ultrasonic noise (USN) voltage presented to an input amplifier (10). This is accomplished through a closed-loop circuit configuration including a multiplier (16) which modulates the current output of the input amplifier (10) in accordance with the output of a master differential amplifier (18) and supplies the modulated current to a gain stage (14) connected to the input of the master differential amplifier (18). The output of the master differential amplifier (18) is mirrored by a slave differential amplifier (20) which applies the actual audio signal attenuation. The closed-loop configuration confines this linear control action to a very narrow range. Outside of this range, the circuit provides either full attenuation or no attenuation.

公开(公告)号：EP3248284A1

公开(公告)日：2017-11-29

申请号：EP16701010.7

申请日：2016-01-19

申请人： Devialet

发明人： MENDES, Eduardo ,  CALMEL, Pierre-Emmanuel

IPC分类号： H03G3/12 ,  H03G7/00 ,  H03G7/08

CPC分类号： H03G7/08 ,  H03G3/12 ,  H03G7/002 ,  H04R3/007 ,  H04R2400/00 ,  H04R2430/01

摘要： The invention relates to a method for adapting the applied volume gain in an amplifier controlling at least one loudspeaker of an enclosure according to the desired volume gain selected by a user on a scale increased by a maximum desired volume gain, said method comprising steps of: determining (204) the effective intensity applied to at least one loudspeaker; calculating (206 and 208) a maximum volume gain from: the desired volume gain, the effective intensity applied to the loudspeaker, thermal characteristics of the loudspeaker, and the maximum desired volume gain; calculating (210) an increasing monotonic function providing an applied volume gain variable according to the desired volume gain such that the image of the maximum desired volume gain by the monotonic function is equal to the maximum volume gain; and applying (212), to the amplifier, as an applied volume gain, the minimum of the maximum volume gain and the applied volume gain which is variable for the desired volume gain.

公开(公告)号：EP1324486A1

公开(公告)日：2003-07-02

申请号：EP00962895.9

申请日：2000-09-27

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： MISE, Toshio, c/o Mitsubishi Denki K K ,  TANABE, Tomohiro

IPC分类号： H03F1/32 ,  H03F1/34 ,  H03G1/04 ,  H03G3/12

CPC分类号： H03F1/345 ,  H03F1/3247 ,  H03F1/34

摘要： A distortion compensation output control circuit has an adder 1 for adding a value of input electric power and a value of a part of output electric power negatively fed backed together, a variable attenuator 2 for attenuating the electric power output from the adder 1, an electric power amplifier 3 for amplifying the electric power output from the variable attenuator 2 and outputting the output electric power set to a prescribed value, a variable attenuator 4 for attenuating the output electric power output from the electric power amplifier 3 and negatively feeding back the attenuated output electric power to the adder 1, a control circuit 12 for controlling the variable attenuator 4 so as to obtain the output electric power of the prescribed value, and a control circuit 11 for controlling the variable attenuator 2 so as to obtain a loop gain depending the output electric power of the prescribed value.

摘要翻译： 失真补偿输出控制电路具有加法器1，用于将输入电力的值和反馈的一部分输出电力的值相加，用于衰减从加法器1输出的电力的可变衰减器2， 功率放大器3，用于放大从可变衰减器2输出的电力并将输出电力值设定为规定值;可变衰减器4，用于衰减从功率放大器3输出的输出电力，并对衰减的输出进行负反馈 加法器1的电力，用于控制可变衰减器4以获得规定值的输出电力的控制电路12，以及控制电路11，用于控制可变衰减器2，以便获得取决于 输出规定值的电力。

公开(公告)号：EP1111776A1

公开(公告)日：2001-06-27

申请号：EP98941693.8

申请日：1998-09-03

申请人： Toa Corporation ,  B.B.M. Electronics Group Limited

发明人： BAKER, Steve B.B.M. Electronics Group Limited ,  GANLEY, Richard B.B.M. Electronics Group Limited

IPC分类号： H03G3/12 ,  H03G3/02 ,  H03F3/45

CPC分类号： H03G1/0088 ,  H03G3/001

摘要： A differential amplifier comprises a first operational amplifier having a non-inverting input terminal for receiving a first input signal and an inverting input terminal for receiving a second input signal, a potentiometer including a plurality of series connected resistors for dividing an output of the first operational amplifier and for selecting a different combination of the plurality of resistors, and a manipulation member for selecting a gain for the differential amplifier. A voltage outputted from the potentiometer is fed back to the inverting input terminal of the first operational amplifier through a second operational amplifier. An instruction signal for specifying a combination of resistors in the potentiometer is generated from a signal generator corresponding to a gain selected by the manipulating member.

摘要翻译： 差动放大器包括：第一运算放大器，具有用于接收第一输入信号的非反相输入端和用于接收第二输入信号的反相输入端;电位计，包括多个串联电阻，用于将第一运算 放大器和用于选择多个电阻器的不同组合，以及用于选择差分放大器的增益的操作构件。 从电位器输出的电压通过第二运算放大器反馈到第一运算放大器的反相输入端。 用于指定电位器中的电阻器的组合的指令信号是从对应于由操作构件选择的增益的信号发生器产生的。

公开(公告)号：EP0340719A3

公开(公告)日：1991-02-27

申请号：EP89107927.9

申请日：1989-05-02

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Imanishi, Kazuo c/o Intellectual Property Div.

IPC分类号： H03G3/12 ,  H03G1/00

CPC分类号： H03G3/12 ,  H03G1/0023

摘要： An amplifier circuit comprises an amplifying sec­tion for amplifying an input signal voltage, and feed­back resistances (R2, R3) for supplying part of an output voltage of the amplifying section as a negative feedback signal voltage thereto. The amplifying section of the amplifier circuit includes a first voltage-­current converting amplifier (Q1, Q2) for converting an input signal voltage into a corresponding current, a second voltage-current converting amplifier (Q3, Q4) for converting a negative feedback signal voltage into a corresponding current, an active load circuit (Q5, Q6, Q9) for coupling output currents of the first and second voltage-current converting amplifier (Q1, Q2, Q3, Q4), which are set in an opposite phase relation, and generating an output voltage corresponding to the sum of the coupled currents, a voltage amplifier (21) for amplifying the output voltage of the active load circuit (Q5, Q6, Q9), and a control circuit (VB, R3, Q7, Q8, I0) for controlling the ratio of the mutual conductances of the first and second voltage-current converting amplifiers (Q1, Q2, Q3, Q4).

公开(公告)号：EP0340719A2

公开(公告)日：1989-11-08

申请号：EP89107927.9

申请日：1989-05-02

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Imanishi, Kazuo c/o Intellectual Property Div.

IPC分类号： H03G3/12 ,  H03G1/00

CPC分类号： H03G3/12 ,  H03G1/0023

摘要： An amplifier circuit comprises an amplifying sec­tion for amplifying an input signal voltage, and feed­back resistances (R2, R3) for supplying part of an output voltage of the amplifying section as a negative feedback signal voltage thereto. The amplifying section of the amplifier circuit includes a first voltage-­current converting amplifier (Q1, Q2) for converting an input signal voltage into a corresponding current, a second voltage-current converting amplifier (Q3, Q4) for converting a negative feedback signal voltage into a corresponding current, an active load circuit (Q5, Q6, Q9) for coupling output currents of the first and second voltage-current converting amplifier (Q1, Q2, Q3, Q4), which are set in an opposite phase relation, and generating an output voltage corresponding to the sum of the coupled currents, a voltage amplifier (21) for amplifying the output voltage of the active load circuit (Q5, Q6, Q9), and a control circuit (VB, R3, Q7, Q8, I0) for controlling the ratio of the mutual conductances of the first and second voltage-current converting amplifiers (Q1, Q2, Q3, Q4).

摘要翻译： 放大器电路包括用于放大输入信号电压的放大部分和用于提供放大部分的输出电压的一部分作为负反馈信号电压的反馈电阻（R2，R3）。 放大器电路的放大部分包括用于将输入信号电压转换成相应电流的第一电压 - 电流转换放大器（Q1，Q2），用于将负反馈信号电压（Q3，Q4）转换成第二电压 - 电流转换放大器 （Q1，Q2，Q3，Q4）的输出电流进行耦合的有源负载电路（Q5，Q6，Q9），以及设置为相反相位关系的有源负载电路 产生对应于耦合电流之和的输出电压，用于放大有源负载电路（Q5，Q6，Q9）的输出电压的电压放大器（21）以及控制电路（VB，R3，Q7，Q8， I0），用于控制第一和第二电压 - 电流转换放大器（Q1，Q2，Q3，Q4）的互导率的比值。