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    • 12. 发明授权
    • Amplifier arrangement with variable gain factor
    • 具有可变增益系数的放大器布置
    • US4290025A
    • 1981-09-15
    • US15547
    • 1979-02-26
    • Rudy J. van de Plassche
    • Rudy J. van de Plassche
    • H03G3/12H03G1/00H03G3/00H03F3/45H03G3/30
    • H03G1/0017H03G1/0023H03G3/00
    • An amplifier arrangement with a variable gain factor comprising a first and a second emitter-coupled transistor and a third and a fourth emitter-coupled transistor. The collector electrodes of the first and third transistor are coupled to an output of the amplifier arrangement. Between the interconnected base electrodes of the first and the fourth transistor and the interconnected base electrodes of the second and the third transistor a control signal can be applied. A signal current is applied to the interconnected emitter electrodes of the first and the second transistor and to the interconnected emitter electrodes of the third and the fourth transistor by means of a first and a second voltage-current converter, respectively, at least one of the two converters comprising a signal input and both converters having negative feedback to the output of the amplifier arrangement.
    • 具有可变增益因子的放大器装置,包括第一和第二发射极耦合晶体管以及第三和第四发射极耦合晶体管。 第一和第三晶体管的集电极耦合到放大器装置的输出端。 在第一和第四晶体管的互连基极与第二晶体管和第三晶体管的互连基极之间可以施加控制信号。 分别通过第一和第二电压 - 电流转换器将信号电流施加到第一和第二晶体管的互连发射极电极和第三和第四晶体管的互连的发射极,至少一个 两个转换器包括信号输入和两个转换器,其具有对放大器装置的输出的负反馈。
    • 14. 发明授权
    • Error-tolerant binary encoder
    • 容错二进制编码器
    • US5557275A
    • 1996-09-17
    • US269812
    • 1994-06-30
    • Christinus J. van ValburgRudy J. van de Plassche
    • Christinus J. van ValburgRudy J. van de Plassche
    • H03M1/12H03M7/00H03M7/16H03M1/36
    • H03M7/165
    • Encoder for the conversion of a signal of thermometric or cyclic type including a set of n Exclusive OR gates (X1, Xi, . . . , Xn) and an encoding matrix with n rows (1 . . . n) and a plurality of pairs of columns for a differential output of one bit of the binary signal, a matrix in which a row/column coupling is produced by a transistor (T). A pair of pseudo-columns of order zero is coupled to the rows in a way comparable to the coupling of the pair of columns of order 1, but by applying a cyclic shift in respect of the rank of the rows (rows of rank i of the pseudo-columns of order zero, coupled like the rows of rank (i modulo n)+1 of the columns of order 1). The bit of order zero [Bo] is obtained at the output of an additional Exclusive OR gate the inputs of which respectively receive the logic signal [Bo*] output by the pair of pseudo-columns of order zero, and the logic signal [B1] output by the pair of columns of order one.
    • 用于转换包括一组n个异或门(X1,Xi,...,Xn)的温度测量或循环类型的信号的编码器和具有n行(...,)和多对的编码矩阵 用于二进制信号的一位的差分输出的列,其中由晶体管(T)产生行/列耦合的矩阵。 顺序为零的一对伪列以与订单1的列对的耦合相当的方式耦合到行,但是通过对行的等级(行的等级i应用循环移位) 顺序为零的伪列,与秩1的列(i模n)+ +1的行耦合。 在其输入分别接收由零对的一对伪列输出的逻辑信号[Bo *]和逻辑信号[B1(B))的附加异或门的输出处获得阶数零[Bo]的位 ]由一对订单列输出。
    • 16. 发明授权
    • Balancing compensation in differential amplifiers with a single-ended
drive
    • 使用单端驱动器平衡补偿差分放大器
    • US4517525A
    • 1985-05-14
    • US445334
    • 1982-11-29
    • Eise C. DijkmansRudy J. van de Plassche
    • Eise C. DijkmansRudy J. van de Plassche
    • H03F1/32H03F1/34H03F1/48H03F3/19H03F3/45H03F1/14
    • H03F3/45071H03F1/48
    • A differential amplifier with single-ended drive includes a balancing impedance (20) coupled between the base of the transistor (3) connected to the signal input (1) and the common point (9) of the two emitters of the transistors (3,4), which form a differential pair. The capacitance value of the capacitor (20) is substantially equal to the capacitance value of the stray capacitance (19) of the collector-substrate junction of a transistor (10) which forms a current source. This provides a symmetry of the capacitances between the input (1) and the common point (9) and between the common point (9) and ground via the transistor (10). This results in an improved balance in the output signals at the output terminals (5,6) and a flat frequency response of the differential amplifier for higher frequencies.
    • 具有单端驱动的差分放大器包括耦合在连接到信号输入端(1)的晶体管(3)的基极和晶体管(3)的两个发射极的公共点(9)之间的平衡阻抗(20) 4),其形成差分对。 电容器(20)的电容值基本上等于形成电流源的晶体管(10)的集电极 - 衬底结的杂散电容(19)的电容值。 这提供了通过晶体管(10)在输入(1)和公共点(9)之间以及公共点(9)和接地之间的电容的对称性。 这导致在输出端子(5,6)处的输出信号的平衡得到改善,以及用于较高频率的差分放大器的平坦的频率响应。
    • 20. 发明授权
    • Analog-to-digital current converter
    • 模数转换器
    • US4574270A
    • 1986-03-04
    • US498617
    • 1983-05-27
    • Rudy J. van de Plassche
    • Rudy J. van de Plassche
    • H03M1/20H03M1/44H03K13/09
    • H03M1/445
    • An analog-to-digital current converter comprises n series-connected stages which each provide one bit of the Gray code. For this purpose each stage m derives a difference current from the input current (i.sub.i/m), which is the output current (i.sub.0/m-1) of the preceding stage, and a reference current (I/2.sup.m-1) from a source (6). This difference current flows to the output (a) of the stage m (i.sub.o/m) either via a diode (3) or via a current (11) depending on its direction. Conduction of the diode (3) or of the current-mirror circuit (11) is used for the bit indication.This results in a very fast analog-to-digital converter with few components and a high accuracy and resolution.
    • 模数转换器包括n个串联连接的级,每个级提供Gray码的一位。 为此,每个级m从与前一级的输出电流(i0 / m-1)和来自a的输入电流(i / 2m-1)的输入电流(I / 2m-1) 来源(6)。 该差电流通过二极管(3)或根据其方向通过电流(11)流到级m(io / m)的输出(a)。 二极管(3)或电流镜电路(11)的导通用于位指示。 这导致具有很少组件和高精度和高分辨率的非常快的模数转换器。