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1. 发明授权

US4833472A System for setting an analog resistor to a selectable, digitally predeterminable value 失效
标题翻译：将模拟电阻设置为可选择的数字可预定值的系统
公开(公告)号：US4833472A
公开(公告)日：1989-05-23
申请号：US82856
申请日：1987-08-05
申请人： Joachim Hannappel , Thomas Pfeifer
发明人： Joachim Hannappel , Thomas Pfeifer
IPC分类号： H03H11/24
CPC分类号： H03H11/245
摘要： An arrangement for setting an analog resistor to a value which is digitally predetermined. The arrangement contains a resistor (2) which is variable by a control voltage as setting member of a control circuit, in series with a measurement resistor (3) and a rotary-magnet ratio meter (26). This series connection is fed from an operating voltage. The voltage at the measurement resistor (3) and the digital value are each fed to inputs of a multiplier (5) the outputs of which are connected via a digital/analog converter (6) to an input of a subtraction circuit (7). The other input of the subtraction circuit (7) is acted on by a reference voltage. The output of the subtraction circuit (7) produces the control voltage for the adjustable resistor (2).
摘要翻译：用于将模拟电阻器设置为数字预定值的装置。该装置包括一个电阻器（2），该电阻器可以通过控制电压变化，作为与测量电阻器（3）和旋转磁体比率计（26）串联的控制电路的设置部件。该串联连接从工作电压馈送。测量电阻器（3）上的电压和数字值分别馈送到乘法器（5）的输入端，输出端经由数字/模拟转换器（6）连接到减法电路（7）的输入端。减法电路（7）的另一个输入端被参考电压作用。减法电路（7）的输出产生可调电阻（2）的控制电压。

2. 发明授权

US4836027A Circuit for a sensor 失效
标题翻译：传感器电路
公开(公告)号：US4836027A
公开(公告)日：1989-06-06
申请号：US123974
申请日：1987-11-20
申请人： Joachim Hannappel , Thomas Pfeifer
发明人： Joachim Hannappel , Thomas Pfeifer
IPC分类号： G01D3/028 , G01D3/036 , G01D5/18 , G01L19/04 , G01R1/44
CPC分类号： G01D3/0365 , G01L9/065
摘要： In a circuit for a sensor the output signal of which is dependent not only on the variable to be determined but also on the temperature, an amplifier having a temperture-dependent amplification factor is connected to the output of the sensor, and the output of the amplifier is connected to an adder circuit to which a temperature-dependent voltage can be fed. The amplifier is preferably a differential amplifier within the feedback branch of which a temperature-dependent resistor is inserted. The adder circuit is preferably formed by another differential amplifier to the inputs of which the output signal of the differential amplifier with temperature-dependent amplification, the temperature-dependent voltage and a substantially temperature-independent voltage can be fed via resistors.
摘要翻译：在传感器的电路中，其输出信号不仅取决于要确定的变量，而且取决于温度，具有温度依赖性放大因子的放大器连接到传感器的输出，放大器连接到可以馈送温度相关电压的加法器电路。该放大器最好是反馈支路内的一个差分放大器，其中插入有温度依赖电阻器。加法器电路优选地由另一个差分放大器形成为具有温度依赖放大的差分放大器的输出信号，与温度相关的电压和基本上与温度无关的电压的输入，可以通过电阻馈送。

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