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    • 2. 发明申请
    • CIRCUIT ARRANGEMENT COMPRISING A POWER AMPLIFIER STAGE
    • 包含功率放大器级的电路布置
    • WO1998000907A1
    • 1998-01-08
    • PCT/IB1997000730
    • 1997-06-18
    • PHILIPS ELECTRONICS N.V.PHILIPS PATENTVERWALTUNG GMBHPHILIPS NORDEN ABSPARKS, Geoffrey, Sidney
    • PHILIPS ELECTRONICS N.V.PHILIPS PATENTVERWALTUNG GMBHPHILIPS NORDEN AB
    • H03F01/32
    • H03F1/3241H03F2200/372
    • A circuit arrangement is described comprising: a power amplifier stage located on a forward gain path arranged between a signal input and a signal output, a feedback path, connecting the signal output to the signal input, and comprising an extraction stage for extracting part of a signal from the output of the power amplifier stage to the feedback path, and comprising a feedback function stage; a re-combining stage for re-combining a feedback signal from the output of the feedback path with an external input signal, an output of the re-combining stage being coupled to the signal input of the power amplifier stage; a first gain control element in the forward gain path; a second gain control element in the feedback path; and a control circuit which varies the first and second gain control elements inversely, so that the product of their gain factors remains constant, in essence. To improve the operating behavior even further, particularly with respect to noise, the invention provides that the first gain control element is formed by an adjustable attenuator which is preceded in the forward gain path by a low-noise amplifier stage which has a substantially constant gain factor.
    • 描述了一种电路装置,包括:功率放大器级,位于布置在信号输入端和信号输出端之间的正向增益通道上,反馈路径将信号输出连接到信号输入端,并包括提取级, 信号从功率放大器级的输出到反馈路径,并且包括反馈功能级; 用于将来自反馈路径的输出的反馈信号与外部输入信号重新组合的重新组合级,再组合级的输出耦合到功率放大器级的信号输入; 正向增益路径中的第一增益控制元件; 反馈路径中的第二增益控制元件; 以及控制电路,其相反地改变第一和第二增益控制元件,使得其增益因子的乘积本质上保持不变。 为了进一步提高操作性能,特别是在噪声方面,本发明提供了第一增益控制元件由可调节的衰减器形成,该可调衰减器在正向增益路径之前通过低噪声放大器级,其具有基本恒定的增益 因子。
    • 4. 发明申请
    • CIRCUIT ARRANGEMENT COMPRISING A LOGARITHMIC TRANSFER FUNCTION
    • 包含对数转移函数的电路布置
    • WO1997033366A2
    • 1997-09-12
    • PCT/IB1997000200
    • 1997-03-05
    • PHILIPS ELECTRONICS N.V.PHILIPS PATENTVERWALTUNG GMBHPHILIPS NORDEN AB
    • PHILIPS ELECTRONICS N.V.PHILIPS PATENTVERWALTUNG GMBHPHILIPS NORDEN ABDICK, Burkhard
    • H03G07/06
    • H03G7/001G06G7/24
    • A description is given of a circuit arrangement comprising a logarithmic transfer function between an input signal and an output signal in a predefined level range of the input signal, comprising a pair of amplifier elements forming a first differential amplifier, the main current paths of which amplifier elements are connected, on the one hand, to each other and to a first current source and on the other hand, to working impedances subdivided by respective taps, and the control terminals of which amplifier elements are supplied with the input signal; a pair of amplifier elements forming a second differential amplifier, the main current paths of which amplifier elements are connected, on the one hand, to each other and to a second current source and on the other hand, to the connections of the main current paths of the first differential amplifier and the working impedances, and whose control terminals are cross-connected to the taps of the working impedances; and a rectifier stage whose input is connected to the connections of the main current paths of the differential amplifiers and the working impedances and whose output signal is tapped from its output. This circuit arrangement has a very low power consumption and low circuit complexity.
    • 给出了包括在输入信号和输入信号的预定电平范围内的输出信号之间的对数传递函数的电路装置的描述,包括形成第一差分放大器的一对放大器元件,其放大器的主电流路径 元件一方面彼此连接并连接到第一电流源,另一方面连接到由各个抽头细分的工作阻抗,并且其放大器元件被提供有输入信号的控制端; 形成第二差分放大器的一对放大器元件,放大器元件连接的主电流路径一方面彼此连接到第二电流源,另一方面与主电流路径的连接 的第一差分放大器和工作阻抗,并且其控制端子与工作阻抗的抽头交叉连接; 整流器级的输入端连接到差分放大器的主电流路径和工作阻抗的连接,并且其输出信号从其输出中抽出。 该电路布置具有非常低的功耗和低电路复杂度。
    • 10. 发明申请
    • DEVICE FOR ACTUATING A CONTROL MEMBER
    • 用于执行控制构件的装置
    • WO1996024761A1
    • 1996-08-15
    • PCT/IB1996000104
    • 1996-02-09
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABPHILIPS PATENTVERWALTUNG GMBHBOLTE, EkkehardBERTRAM, LeoWENDT, Matthias
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABPHILIPS PATENTVERWALTUNG GMBH
    • F02D11/10
    • F02D11/106F02D2009/0294G01B7/30
    • The invention relates to a device for actuating a control member, particularly a throttle valve (4) in a gas conduit (3), such as for example an intake of an internal-combustion engine, which valve is pivotable into operating positions by means of a valve shaft (5), an actuator (11a) being provided, which actuator consists of a rotor body, serving as an actuator body (9) and arranged on the valve shaft (5), and of an electrically energisable excitation section (11), which cooperates with said rotor body, and a position sensor (20) detecting angular positions of the valve shaft (5), which sensor comprises an angular-position generator (9, 22) and an angular-position detector (23), which are associated with one another and of which one of the two is mounted so as to be rotatable, the valve shaft (5) itself being constructed to carry the angular-position generator (9, 22) or angular-position detector (23), and the associated part of the position sensor (20) being stationarily mounted on the housing (2) of the device.
    • 本发明涉及一种用于致动控制构件的装置,特别是气体导管(3)中的节流阀(4),例如内燃机的入口,该阀可以通过以下方式枢转到操作位置: 一个阀轴(5),一个致动器(11a),该致动器由一个用作致动器主体(9)并设置在阀轴(5)上的转子体和一个可激励的励磁部分 ),其与所述转子主体配合;以及位置传感器(20),其检测所述阀轴(5)的角位置,所述传感器包括角位置发生器(9,22)和角位置检测器(23) 它们彼此相关联并且其中一个安装成可旋转,阀轴(5)本身构造成承载角位置发生器(9,22)或角位置检测器(23), ,并且位置传感器(20)的相关部分被固定地安装在t上 他装置(2)的设备。