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21. 发明授权

US4567426A Current stabilizer with starting circuit 失效
标题翻译：电流稳压器带启动电路
公开(公告)号：US4567426A
公开(公告)日：1986-01-28
申请号：US595062
申请日：1984-03-30
申请人： Rudy J. van de Plassche , Peter J. M. Sijbers
发明人： Rudy J. van de Plassche , Peter J. M. Sijbers
IPC分类号： G05F3/30 , G05F1/56 , G05F3/26 , G05F3/16
CPC分类号： G05F3/265 , Y10S323/901
摘要： Two current circuits are between two common terminals (+V.sub.B and -V.sub.B). The ratio between the currents in the two current circuits is defined by a first current-dividing circuit, and the absolute values of these currents are defined by means of a second current-dividing circuit, in particular a resistor in this second current-dividing circuit. In order to ensure that the current-stabilizing assumes the proper state upon activation, a first current-supply circuit is coupled to the input of the second current-dividing circuit, which current-supply circuit comprises the series arrangement of a resistor and a transistor arranged as a diode, and a second current-supply circuit is coupled to the output of the current-dividing circuit, which second current-supply circuit includes a transistor whose base is connected in common with that of the transistor of the first current-supply circuit.
摘要翻译：两个公共端子（+ VB和-VB）之间有两个电流电路。两个电流电路中的电流之间的比例由第一分流电路限定，这些电流的绝对值由第二分流电路，特别是该第二分流电路中的电阻器。为了确保电流稳定在启动时呈现适当的状态，第一电流供应电路耦合到第二分流电路的输入，该电流供应电路包括电阻器和晶体管的串联布置被布置为二极管，第二电流供应电路耦合到分流电路的输出端，该第二电流源电路包括一个晶体管，其基极与第一电流源的晶体管的基极相连电路。

22. 发明授权

US4509020A Push-pull amplifier 失效
标题翻译：推挽放大器
公开(公告)号：US4509020A
公开(公告)日：1985-04-02
申请号：US529892
申请日：1983-09-07
申请人： Rudy J. van de Plassche , Eise C. Dijkmans
发明人： Rudy J. van de Plassche , Eise C. Dijkmans
IPC分类号： H03F3/20 , H03F3/30 , H03F3/26
CPC分类号： H03F3/3088
摘要： For a satisfactory cross-over behavior of the transistors T.sub.1 and T.sub.2 of push-pull amplifier comprising an input 2 and an output 3, it is necessary that the sum of the base-emitter voltages of the transistors T.sub.1 and T.sub.2 remains substantially constant. For this purpose a first voltage-current converter 5 is coupled between the base and the emitter of transistor T.sub.1, the inverting input of this converter being coupled to the base of transistor T.sub.1 via a first reference-voltage source 8 and the non-inverting input to the emitter of transistor T.sub.1. Similarly, a second voltage-current converter 9 and a second reference-voltage source 12 are arranged between the base and the emitter of transistor T.sub.2. The output currents of the first and the second voltage-current converters 5 and 9 are compared with each other in the combining circuit 14 which drives the control amplifier 15, which in its turn controls the base-emitter voltage of transistor T.sub.2 in such a way that the sum of the base-emitter voltages of transistor T.sub.1 and T.sub.2 remains constant. The push-pull amplifier exhibits a minimal amount of second-harmonic distortion, because only the difference of the errors introduced by the first and the second voltage-current converters 5 and 9 is of importance in this respect and these errors are substantially equal to each other due to the method of fabrication of the voltage-current converters.
摘要翻译：为了使包括输入2和输出3的推挽放大器的晶体管T1和T2的令人满意的交叉行为，晶体管T1和T2的基极 - 发射极之和的总和必须保持基本恒定。为此，第一电压 - 电流转换器5耦合在晶体管T1的基极和发射极之间，该转换器的反相输入经由第一参考电压源8和非反相输入端耦合到晶体管T1的基极到晶体管T1的发射极。类似地，第二电压 - 电流转换器9和第二参考电压源12被布置在晶体管T2的基极和发射极之间。在驱动控制放大器15的组合电路14中比较第一和第二电压 - 电流转换器5和9的输出电流，控制放大器15又以这种方式控制晶体管T2的基极 - 发射极电压晶体管T1和T2的基极 - 发射极电压之和保持恒定。推挽放大器表现出最小量的二次谐波失真，因为仅在第一和第二电压 - 电流转换器5和9引入的误差的差异在这方面是重要的，并且这些误差基本上等于每个其他由于电压 - 电流转换器的制造方法。

23. 发明授权

US4446419A Current stabilizing arrangement 失效
标题翻译：目前的稳定安排
公开(公告)号：US4446419A
公开(公告)日：1984-05-01
申请号：US399170
申请日：1982-07-19
申请人： Rudy J. van de Plassche , Eise C. Dijkmans , Hendrikus J. Schouwenaars
发明人： Rudy J. van de Plassche , Eise C. Dijkmans , Hendrikus J. Schouwenaars
IPC分类号： G05F1/56 , G05F3/30 , G05F3/20
CPC分类号： G05F3/30 , Y10S323/907
摘要： In a known current source arrangement which generates a current whose temperature coefficient is only equal to zero at one specific temperature, steps are taken, in accordance with the invention, to render the generated current independent of the temperature over a wide temperature range by compensation of the disturbing factor in the relationship between the generated current and the temperature.
摘要翻译：在已知的电流源装置中，其在一个特定温度下产生温度系数仅等于零的电流，根据本发明，采取步骤，通过补偿在宽的温度范围内使发电电流与温度无关产生电流与温度之间关系的干扰因素。

24. 发明授权

US4405900A Operational amplifier 失效
标题翻译：运算放大器
公开(公告)号：US4405900A
公开(公告)日：1983-09-20
申请号：US252483
申请日：1981-04-08
申请人： Rudy J. van de Plassche
发明人： Rudy J. van de Plassche
IPC分类号： H03F1/08 , H03F1/34 , H03F1/42 , H03F1/48 , H03F3/189 , H03F3/195 , H03F3/45
CPC分类号： H03F1/083 , H03F1/42 , H03F1/48 , H03F3/195
摘要： An operational amplifier having a first amplifier stage and a second amplifier stage, which is driven by the first amplifier stage. According to the invention such an operational amplifier can be corrected for high frequencies in a very simple and effective manner by including a capacitance in parallel with the second amplifier stage between an output of the first stage and an output of the second stage which is comparatively high-ohmic relative to said output of the first stage. The second stage, which is bypassed by said capacitance, is then non-inverting for the part bypassed by said capacitance.
摘要翻译：具有由第一放大级驱动的第一放大级和第二放大级的运算放大器。根据本发明，通过在第一级的输出和比较高的第二级的输出之间包括与第二放大器级并联的电容，可以以非常简单和有效的方式来校正高频率的运算放大器相对于第一级的所述输出。由所述电容旁路的第二级对于由所述电容旁路的部分是非反相的。

25. 发明授权

US4300103A Push-pull amplifier 失效
标题翻译：推挽放大器
公开(公告)号：US4300103A
公开(公告)日：1981-11-10
申请号：US84042
申请日：1979-10-12
申请人： Rudy J. van de Plassche
发明人： Rudy J. van de Plassche
IPC分类号： H03F1/32 , H03F3/20 , H03F3/30
CPC分类号： H03F3/3088 , H03F1/3217 , H03F3/30
摘要： A push-pull amplifier, having a first and a second transistor of the same conductivity type, whose collector-emitter paths are included in series between two power-supply terminals, the emitter electrode of the first transistor being connected to the collector electrode of the second transistor and to an output terminal, and the base electrode of the first transistor being connected to an input terminal, is improved in respect of its linearity, temperature dependence and bandwidth by measuring the base-emitter voltage of the first transistor with the aid of a series connection of a semiconductor junction and a resistor and by applying said voltage with opposite a.c. component to the base-emitter junction of the second transistor via a coupling circuit.
摘要翻译：一种具有相同导电类型的第一和第二晶体管的推挽放大器，其集电极 - 射极路径串联在两个电源端子之间，第一晶体管的发射极连接到第二晶体管和输出端子，并且第一晶体管的基极连接到输入端子，通过借助于第一晶体管的基极 - 发射极电压来测量其线性度，温度依赖性和带宽来改进半导体结和电阻器的串联连接，并通过施加相反的交流电压分量经由耦合电路到第二晶体管的基极 - 发射极结。

26. 发明授权

US4939517A Circuit for synchronizing transitions of bits in a digital code 失效
标题翻译：用于使数字代码中的位的转换同步的电路
公开(公告)号：US4939517A
公开(公告)日：1990-07-03
申请号：US155403
申请日：1988-02-12
申请人： Peter G. Baltus , Rudy J. van de Plassche
发明人： Peter G. Baltus , Rudy J. van de Plassche
IPC分类号： H03M1/44 , H03M1/00 , H03M1/14 , H03M1/36
CPC分类号： H03M1/0624 , H03M1/14
摘要： An electronic circuit contains a main stage (10 and 12) that produces a digital code consisting of a plurality of bits (B.sub.1 -B.sub.M-1) that make binary transitions as a function of an input parameter (V.sub.I). A synchronization stage (14 and 16) synchronizes transitions of bits (B.sub.0 -B.sub.K-1) in one part of the code with corresponding transitions of bits (B.sub.K -B.sub.M-1) in another part. When the input parameter is in transition regions where bits in the first-mentioned part of the code could go to wrong values, the synchronization stage suitably replaces the values of bits in the first part with information based on bits in the other part.

27. 发明授权

US4816742A Stabilized current and voltage reference sources 失效
标题翻译：稳定电流和电压参考源
公开(公告)号：US4816742A
公开(公告)日：1989-03-28
申请号：US156381
申请日：1988-02-16
申请人： Rudy J. van de Plassche
发明人： Rudy J. van de Plassche
IPC分类号： G05F3/26 , G05F3/30 , G05F3/22
CPC分类号： G05F3/30 , Y10S323/907
摘要： Various voltage and current sources which are substantially independent of the positive supply rail are provided, some of which are also temperature independent. The basic NPN-type transistor circuit common to all provided sources generally comprises: a cross-coupled current stabilizer having first and second cross-coupled transistors where the emitter area of the first transistor is larger than the emitter area of the second transistor, a third transistor having an emitter coupled to the collector of the second cross-coupled transistor, a fourth transistor arranged as a diode and having a base coupled to the base of the third transistor and an emitter coupled to the collector of the first transistor; a first resistor coupled between the emitter of the first cross-coupled transistor and the negative rail; a second resistor coupled between the positive rail and the collector of said third transistor; a fifth transistor having its base and emitter coupled to the base and emitter of the second cross-coupled transistor to act as a current mirror thereof; and a sixth transistor coupled between the positive rail and the collector of the fifth current mirror transistor and in cascode relationship therewith. A current source is further created by coupling the base of an additional transistor to the emitter of the fifth transistor. Additional transistors and resistors are utilized in accord with various embodiments of the invention to provide multiple current sources, and voltage and current sources which are stabilized with respect to temperature.

28. 发明授权

US4703310A Digital/analog converter with capacitor-free elimination of a.c. components 失效
标题翻译：数字/模拟转换器，无电容消除交流电。组件
公开(公告)号：US4703310A
公开(公告)日：1987-10-27
申请号：US271315
申请日：1981-06-08
申请人： Rudy J. van de Plassche
发明人： Rudy J. van de Plassche
IPC分类号： H03M1/82 , H03M1/00 , H03M1/74 , H03M1/66
CPC分类号： H03M1/74
摘要： A digital-to-analog converter in accordance with the dynamic permutation principle in which a weighted series of accurate reference currents are generated by a cyclic permutation of currents which are equal to each other with a smaller degree of accuracy. The a.c. error component can then be eliminated by averaging the output signal of the converter over one full permutation cycle or an integral multiple thereof so that a signal without the error component is obtained by sampling at the end of every period. The setting of the digital-to-analog converter should not be changed during an averaging period.
摘要翻译：根据动态置换原理的数模转换器，其中通过具有较小精度的彼此相等的电流的循环置换生成加权的一系列精确参考电流。 a.c. 然后可以通过对转换器的输出信号在一个完整的置换周期或其整数倍进行平均来消除误差分量，使得在每个周期结束时通过采样获得没有误差分量的信号。数字模拟转换器的设置在平均周期内不应该改变。

29. 发明授权

US4616190A Differential amplifier with current steering to enhance slew rate 失效
标题翻译：具有电流转向的差分放大器，以提高转换速率
公开(公告)号：US4616190A
公开(公告)日：1986-10-07
申请号：US771748
申请日：1985-09-03
申请人： Rudy J. van de Plassche
发明人： Rudy J. van de Plassche
IPC分类号： H03F3/45
CPC分类号： H03F3/45071
摘要： A steering circuit (10) in a differential amplifier having a pair of differentially arranged input amplifiers (A1 and A2) steers current from a pair of current sources (11 and 12) in such a way as to enhance slew rate without increasing offset voltage. The steering circuit is formed with a pair of steering amplifiers (A3 and A4) arranged in a differential configuration through a pair of resistors (R3 and R4).
摘要翻译：具有一对差分布置的输入放大器（A1和A2）的差分放大器中的转向电路（10）以一对电流源（11和12）转向电流，以便增加压摆率而不增加失调电压。转向电路由一对通过一对电阻器（R3和R4）以差分配置布置的转向放大器（A3和A4）形成。

30. 发明授权

US4573005A Current source arrangement having a precision current-mirror circuit 失效
标题翻译：具有精密电流镜电路的电流源装置
公开(公告)号：US4573005A
公开(公告)日：1986-02-25
申请号：US573768
申请日：1984-01-25
申请人： Rudy J. van de Plassche
发明人： Rudy J. van de Plassche
IPC分类号： H03M1/80 , G05F1/56 , G05F3/26 , H03M1/00 , H03M1/74 , G05F3/20
CPC分类号： G05F3/265 , H03M1/1057 , H03M1/808
摘要： In a digital-to-analog converter (1) a plurality of binary weighted currents are generated, which currents must be in an accurate current ratio relative to each other. By means of a coupling network (15) which is controlled by a control circuit (17), a plurality of currents from said digital-to-analog converter (1) can be coupled to a precision current-mirror circuit (25) in accordance with a cyclic pattern, this allowing deviations in the ratios of the currents from the digital-to-analog converter (1) to be detected by detection means (80) which control correction means (18.2 to 18.16) by means of which the currents from the digital-to-analog converter (1) are corrected so as to reduce the detected deviations.
摘要翻译：在数模转换器（1）中，产生多个二进制加权电流，哪些电流必须相对于彼此具有精确的电流比。通过由控制电路（17）控制的耦合网络（15），来自所述数模转换器（1）的多个电流可以按照以下方式耦合到精密电流镜电路（25）具有循环模式，这允许通过检测装置（80）检测来自数模转换器（1）的电流的比值的偏差，该检测装置（80）控制校正装置（18.2至18.16），通过该装置控制来自校正数模转换器（1），以减少检测到的偏差。

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