公开(公告)号：US4922123A

公开(公告)日：1990-05-01

申请号：US324414

申请日：1989-03-16

申请人： Miro Rozman

发明人： Miro Rozman

IPC分类号： G01R21/08 ,  G06G7/162

CPC分类号： G06G7/162 ,  G01R21/08

摘要： Supply circuit SC for a Hall sensor multiplication circuit HSC makes it possible to produce both circuits in monolithic technology on a common substrate and yet accomplish the polarity reversal of the output voltage U.sub.H of the multiplication circuit HSC with such accuracy that at said reversal the absolute value of the voltage U.sub.H is preserved with an accuracy of 0.01%.

公开(公告)号：US4972141A

公开(公告)日：1990-11-20

申请号：US289315

申请日：1988-12-23

申请人： Miro Rozman ,  Silvo Zlebir

发明人： Miro Rozman ,  Silvo Zlebir

IPC分类号： G01R21/08 ,  G01R21/133

CPC分类号： G01R21/133 ,  G01R21/08

摘要： A watthour meter or a wattmeter comprising Hall sensors and possessing a precise linearity of the conversion of low voltage into frequency within a broad dynamic range. The required linearity is achieved by providing a multiplication-adding circuit MS with a current output, to which the noninverting input of the last operational amplifier in the circuit is connected, by providing a current-frequency converter IFC with a differential integrator DI comprising an active compensation feedback circuit, by shunting the output and the input of the converter IFC by a compensation circuit CC to compensate the ripple, offset and charge injections of electronic switches, and by placing the Hall sensors so that the magnetic induction direction in the slits of a ferromagnetic yoke is different for each sensor of a pair of them.

公开(公告)号：US4782308A

公开(公告)日：1988-11-01

申请号：US22691

申请日：1987-03-06

申请人： Franc Trobec ,  Marko Zivlakovic ,  Miro Rozman ,  Joze Zmavc ,  Vital Erzen

发明人： Franc Trobec ,  Marko Zivlakovic ,  Miro Rozman ,  Joze Zmavc ,  Vital Erzen

IPC分类号： G06K7/00 ,  G06K7/08 ,  G06K5/00

CPC分类号： G06K7/0008 ,  G06K7/086

摘要： A circuit arrangement of a reading device for electromagnetic identification cards having inverters connected in parallel and an LC resonant circuit forming a transmitting oscillator which is influenced by the identification card to change the amplitude of an oscillating signal in order to recognize approach thereto of the card. Detection of the signal amplitude change is utilized to form pulses for subsequent data processing in which the influence of distance between the identification card and the reading device is minimized.

摘要翻译： 一种用于具有并联连接的逆变器的电磁识别卡的读取装置的电路装置和形成发送振荡器的LC谐振电路，该谐振电路受到识别卡的影响，以改变振荡信号的幅度，以便识别该卡的接近。 利用信号振幅变化的检测来形成用于后续数据处理的脉冲，其中识别卡与读取装置之间的距离的影响最小化。

公开(公告)号：US4843311A

公开(公告)日：1989-06-27

申请号：US73477

申请日：1987-07-15

申请人： Miro Rozman ,  Silvo Zlebir

发明人： Miro Rozman ,  Silvo Zlebir

IPC分类号： G01R21/08 ,  G01R21/14

CPC分类号： G01R21/14 ,  G01R21/08

摘要： A wattmeter in which a Hall sensor is provided with a large number of Hall elements, whose voltages are individually tapped. The wattmeter circuit is further provided with an impulse-width modulator, the input voltage of this modulator being periodically reversed, with a feedback to compensate the disturbing voltages, and with a circuit for precision curvature compensation CMOS bandgap reference. The output of an embodiment of the wattmeter is adapted to the reading-off by a computer. A wattmeter can be realized on a semiconductor wafer.

摘要翻译： 其中霍尔传感器设置有大量霍尔元件的功率表，其电压被单独地抽头。 功率计电路还设置有脉冲宽度调制器，该调制器的输入电压周期性反转，具有反馈以补偿干扰电压，并且具有用于精确曲率补偿CMOS带隙基准的电路。 瓦特计的实施例的输出适于由计算机读取。 可以在半导体晶片上实现瓦特计。

公开(公告)号：US4808918A

公开(公告)日：1989-02-28

申请号：US36772

申请日：1987-04-09

申请人： Miro Rozman

发明人： Miro Rozman

IPC分类号： G01R21/08 ,  G01R21/133 ,  G01R15/10

CPC分类号： G01R21/133 ,  G01R21/08

摘要： A watthour meter having a Hall component in a sensor circuit connected to a low voltage type of voltage-to-frequency converter, achieves linear signal conversion of the voltage output from the sensor circuit with maximum polarity reversal of the Hall voltage by synchronizing such polarity reversal with polarity reversal across an integration capacitor of the converter so that the amplified offset voltage produced by the integration operation and the effects of capacitor instability compensate for each other.

摘要翻译： 在与低压型电压 - 频率转换器连接的传感器电路中具有霍尔元件的瓦特表通过使这种极性反转同步来实现霍尔电压的最大极性反转从传感器电路输出的电压的线性信号转换 在转换器的积分电容器之间极性反转，使得由积分运算产生的放大的偏移电压和电容器不稳定性的影响相互补偿。