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公开(公告)号：US5313114A
公开(公告)日：1994-05-17
申请号：US815158
申请日：1991-12-31
IPC分类号： H03K3/0233 , H03K5/22 , H03K3/01 , H03K17/56 , H03K17/60
CPC分类号： H03K3/02337
摘要： The amplitude of the hysteresis of the circuit is determined principally by the intensity of the current produced by a generator by means of a "band gap" reference voltage, an internal resistance of the circuit, and the resistances connected to the emitters of the input-stage transistors, enabling a high degree of precision to be achieved. The inputs of the circuit are defined by the bases of the input-stage transistors and therefore have high impedance. The preferred application is for forming interface circuits for sensors to be fitted in motor vehicles.
摘要翻译： 电路的滞后幅度主要由发电机通过“带隙”参考电压，电路的内部电阻和连接到输入 - 输出的发射极的电阻产生的电流的强度确定， 能够实现高精度。 电路的输入由输入级晶体管的基极限定，因此具有高阻抗。 优选的应用是形成用于安装在机动车辆中的传感器的接口电路。
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2.发明授权System for automatically controlling the gain-bandwidth product of operational amplifiers 失效用于自动控制运算放大器增益带宽乘积的系统
公开(公告)号：US4839610A
公开(公告)日：1989-06-13
申请号：US119190
申请日：1987-11-10
CPC分类号： H03G1/04 , H03G5/18 , H03H11/1291
摘要： A system for automatically controlling the gain-bandwidth product of operational amplifiers, wherein a gain-bandwidth product (G*B) of one of the amplifiers placed on the same chip as the amplifiers to be controlled is measured and the resulting signal is used to control through a bias circuit, the gain-bandwidth products of all the amplifiers, the value of these products being presettable by the frequeny of a control signal sent to the system input. The reference amplifier is highly compensated in the configuration of voltage follower.
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3.发明授权Circuit and a method for extending the output voltage range of an integrator circuit 有权电路和扩展积分电路的输出电压范围的方法公开(公告)号：US06407610B2
公开(公告)日：2002-06-18
申请号：US09751927
申请日：2000-12-29
IPC分类号： G06F764
CPC分类号： G01L23/225 , G06J1/00
摘要： A circuit extends the output voltage range of an integrator circuit wherein the input signal is used to produce an output signal, and the voltage of the output signal develops monotonically within a predetermined range of possible values. The integrator circuit is driven within an integration time period such that each time the signal at its output reaches a limit of the range of values, the integrator circuit starts a subsequent integration stage of the input signal in which the output signal develops again within the above-mentioned range. This takes place by resetting the integrator circuit or by a reversal of the characteristic slope of the output signal. This is combined with storing the number of occasions on which these interventions have occurred as determined by a scounter. This enables the actual voltage value of the signal resulting from the integration to be calculated by a relatively straightforward mathematical operation from the reading of the counter, and from the signal currently present at the output of the integrator at the end of the integration period.
摘要翻译： 电路扩展积分器电路的输出电压范围，其中输入信号用于产生输出信号，并且输出信号的电压在可能值的预定范围内单调发展。 积分电路在积分时间段内被驱动，使得每当其输出端的信号达到值范围的极限时，积分器电路开始输入信号的后续积分级，其中输出信号在上述范围内再次产生 提到的范围。 这通过复位积分器电路或反转输出信号的特性斜率来进行。 这与存储这些干预措施发生的场合的数量相结合，由扫描仪确定。 这使得通过来自计数器的读数的相对简单的数学运算以及在积分周期结束时当前存在于积分器的输出端的信号来计算由积分产生的信号的实际电压值。
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4.发明授权Integrated instrumentation amplifier with integrated frequency-compensating capacitance 失效具有集成频率补偿电容的集成仪表放大器
公开(公告)号：US5258723A
公开(公告)日：1993-11-02
申请号：US919991
申请日：1992-07-27
IPC分类号： G01N27/409 , H03F1/08 , H03F3/34 , H03F3/347 , H03F3/45
CPC分类号： H03F1/083 , H03F3/45479 , H03F2200/261
摘要： An amplifier including first and second input transistors which are connected to respective first and second feedback amplification circuits associated with respective frequency-compensating capacitances. The second feedback amplification circuit has a two-stage structure and includes an internal compensating capacitance. The three frequency-compensating capacitances can have low values and can thus conveniently be integrated in the same chip as the amplifier. The amplifier can be used, in particular, as an interface between a zirconium-dioxide oxygen sensor and an electronic control unit which have different earth conductors.
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5.发明授权Circuit for automatically controlling the gain-bandwidth product of operational amplifiers 失效用于自动控制运算放大器增益带宽乘积的电路
公开(公告)号：US4835490A
公开(公告)日：1989-05-30
申请号：US178556
申请日：1988-04-07
摘要： A circuit for automatically controlling the gain-bandwidth product of operation amplifiers, where gain-bandwidth product (G*B) of one of the amplifiers placed on the same chip as the amplifiers to be controlled is measured and the resulting signal is used to control through a bias circuit the gain-bandwidth products of all the amplifiers, the value of these products being presettable through the frequency of a control signal sent to the circuit input. The reference amplifier is highly compensated for and placed in the configuration of voltage follower.
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公开(公告)号：US5793232A
公开(公告)日：1998-08-11
申请号：US744867
申请日：1996-11-07
IPC分类号： F02D41/20 , H01H47/32 , H03K17/695 , H03K19/084 , G05F1/10
CPC分类号： F02D41/20 , H01H47/325 , F02D2041/2006 , F02D2041/2017 , F02D2041/2034 , F02D2041/2058 , F02D2041/2075
摘要： An injector control circuit for a motor vehicle electronic injection system utilizing current recirculation to control an injector actuation winding provided with a circuit configuration containing a constant current generator operable to eliminate the problems of instability and sensitivity to supply line interruptions to which prior art control circuits are subject.
摘要翻译： 一种用于机动车辆电子注射系统的喷射器控制电路，其利用电流再循环来控制喷射器致动绕组，其具有包含恒定电流发生器的电路配置，该恒定电流发生器可操作以消除现有技术控制电路所对应的线路中断的不稳定性和灵敏度问题 学科。
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公开(公告)号：US06377053B1
公开(公告)日：2002-04-23
申请号：US09028731
申请日：1998-02-24
IPC分类号： G01R3114
CPC分类号： G01R19/16528 , G01R31/025
摘要： The short-circuit detecting device includes a current generator for generating a current (IIN) of predetermined intensity, selectively into or out of the terminal (IN), and a first voltage comparator connected to the terminal (IN) and connected to the current generator in a manner such that the generator generates a current (IIN) in the inward direction and in the outward direction relative to the terminal (IN), respectively, when the voltage between the terminal (IN) and the ground is greater than a first level and less than a second level, respectively. The first level is greater than or equal to the second. The device also includes a second voltage comparator for supplying a first and a second signal, respectively, when the voltage between the terminal (IN) and the ground is close to the supply voltage (Vcc) and close to the ground potential (gnd), respectively, and a processing circuit connected to the second comparator for detecting whether the first or the second signal, respectively, persists for a predetermined period of time. In this case, an output signal (F_Vcc; F_gnd) is supplied which is indicative of a short-circuit of the terminal (IN) to the supply (Vcc) or to ground, respectively.
摘要翻译： 短路检测装置包括用于产生预定强度的电流（IIN）的电流发生器，其选择性地进入或离开端子（IN）;以及第一电压比较器，连接到端子（IN）并连接到电流发生器 以使得当端子（IN）和地面之间的电压大于第一级时，发电机分别相对于端子（IN）在向内方向和向外方向上产生电流（IIN） 并分别低于第二级。 第一级大于或等于第二级。 当端子（IN）和地之间的电压接近电源电压（Vcc）并且接近地电位（gnd）时，该装置还包括分别提供第一和第二信号的第二电压比较器， 以及连接到第二比较器的处理电路，用于分别检测第一或第二信号是否持续预定的时间段。 在这种情况下，提供输出信号（F_Vcc; F_gnd），分别指示端子（IN）与电源（Vcc）或接地的短路。
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公开(公告)号：US5812014A
公开(公告)日：1998-09-22
申请号：US726282
申请日：1996-10-04
CPC分类号： H02M7/217
摘要： A double half-wave rectifier circuit with earth shift using an input differential amplifier and two current mirrors in cascode configuration in such a way that the input current is transferred to the output via one or the other of the current mirrors depending on whether the input signal voltage is greater than or less than an input reference voltage and therefore the current is positive or negative.
摘要翻译： 具有接地移位的双半波整流电路，其使用输入差分放大器和两个共模共栅配置的电流镜，使得根据输入信号是否经由一个或另一个电流镜将输入电流传输到输出端 电压大于或小于输入参考电压，因此电流为正或负。
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