公开(公告)号：US20060034029A1

公开(公告)日：2006-02-16

申请号：US11204566

申请日：2005-08-15

申请人： Chung Wang

发明人： Chung Wang

IPC分类号： H02H5/04

CPC分类号： G01R19/0092 ,  G01R19/32

摘要： This invention discloses a current detector formed on a multiple-layered structure with a resistor supported thereon. The multiple-layered structure further includes a heat dissipation layer for dissipating heat generated from the resistor. In a preferred embodiment, the current detector further includes conductive blocks formed by a microelectronic casting process for functioning as part of electrodes for the current detector. In another preferred embodiment, the current detector further includes wrapping around electrodes each with a side conductive surface wrapping around a side surface of the multiple-layered structure.

摘要翻译： 本发明公开了一种形成在多层结构上的电流检测器，其上装有电阻器。 多层结构还包括用于耗散从电阻器产生的热量的散热层。 在优选实施例中，电流检测器还包括由微电子铸造工艺形成的导电块，用作电流检测器的电极的一部分。 在另一优选实施例中，电流检测器还包括围绕电极缠绕，每个电极具有围绕多层结构的侧表面缠绕的侧导电表面。

公开(公告)号：US20060033459A1

公开(公告)日：2006-02-16

申请号：US11203735

申请日：2005-08-15

申请人： Cornelius Peter ,  Angelika Peter

发明人： Cornelius Peter ,  Angelika Peter

IPC分类号： H02P7/06

CPC分类号： H02M3/156 ,  G01R19/0092 ,  G01R19/32 ,  H02M2001/0009

摘要： A system and method for measuring the electrical current used by an electrical device and controlled according to the Pulse Width Modulation (PWM) method, such as a DC motor, the system using a Field Effect Transistor (FET) coupled to the electrical device such that the voltage applied to the FET is measured to ascertain in part, the current usage of the electrical device.

摘要翻译： 一种用于测量由电气设备使用并根据脉冲宽度调制（PWM）方法控制的电流的系统和方法，例如直流电动机，使用耦合到电气设备的场效应晶体管（FET）的系统使得 测量施加到FET的电压，以部分地确定电气设备的当前使用。

公开(公告)号：US06249162B1

公开(公告)日：2001-06-19

申请号：US08242881

申请日：1994-05-16

申请人： Koichi Inoue

发明人： Koichi Inoue

IPC分类号： H03K3037

CPC分类号： H03K3/02337 ,  G01R19/32 ,  H03K3/011

摘要： A hysteresis circuit has a comparator which compares a threshold voltage and an input voltage. The threshold voltage is supplied from a voltage dividing circuit having resistors. A constant current circuit is connected to a voltage divided point of the voltage dividing circuit through a switch. The ON and OFF of the switch is controlled by an output of the comparator. When the switch is turned ON, a constant current flows to the voltage divided point, so that the value of the threshold voltage supplied from the voltage dividing circuit to the comparator is changed.

摘要翻译： 迟滞电路具有比较阈值电压和输入电压的比较器。 阈值电压由具有电阻器的分压电路提供。 恒流电路通过开关连接到分压电路的分压点。 开关的ON和OFF由比较器的输出控制。 当开关导通时，恒流电流流向分压点，使得从分压电路向比较器提供的阈值电压的值改变。

公开(公告)号：US5442280A

公开(公告)日：1995-08-15

申请号：US114246

申请日：1993-09-01

申请人： Christophe Baudart

发明人： Christophe Baudart

IPC分类号： G01K7/18 ,  G01K7/22 ,  G01K7/36 ,  G01R15/18 ,  G01R19/32 ,  G01R33/00 ,  H01F38/28

CPC分类号： G01R19/32 ,  G01K7/36

摘要： A Rogowski coil is used as a precise current and temperature measuring device (in particular a device that is highly insensitive to temperature variations). The Rogowski coil is of the type including at least one printed circuit plate provided with a circular cutout. The coil is implemented by metal deposits on each of the two faces of the plate and extending along radii such that geometrical projections thereof pass through the center of the cutout. Electrical connections between the radii on one face and those on the opposite face are implemented by plated-through holes that pass through the thickness of the plate.

摘要翻译： Rogowski线圈用作精确的电流和温度测量装置（特别是对温度变化非常不敏感的装置）。 罗戈夫斯基线圈是包括设置有圆形切口的至少一个印刷电路板的类型。 线圈通过金属沉积物在板的两个表面中的每一个上实现并且沿着半径延伸，使得其几何突起穿过切口的中心。 一个面上的半径与相对面上的半径之间的电连接通过穿过板的厚度的镀通孔实现。

公开(公告)号：US5247244A

公开(公告)日：1993-09-21

申请号：US524644

申请日：1990-05-16

申请人： Robert C. Miller ,  Carlo F. Petronio

发明人： Robert C. Miller ,  Carlo F. Petronio

IPC分类号： G01R15/24 ,  G01R19/32 ,  G02F1/03

CPC分类号： G01R19/32 ,  G01R15/242 ,  G02F1/0305

摘要： As the dielectric constant and the halfwave voltage of electro-optic crystals having a fourfold axis of rotary inversion are oppositely dependent on the absolute temperature, but their product is nearly independent of temperature, temperature compensation in an ac voltage measuring system utilizing such an electro-optic crystal is provided by measuring the time averaged current through the crystal. Good electric isolation is achieved by a current sensing circuit which produces a pulsed light signal having a pulse rate proportional to the time averaged current through the crystal. The pulsed light signal is converted to an electrical signal for input to a digital computer which calculates therefrom, and from a reference current and voltage measured at a reference temperature, and a time averaged voltage measurement, a temperature correction factor which is applied to the crystal halfwave voltage used by the computer in calculating the instantaneous value of the voltage to be measured. A look up table containing empirically derived values related to the calculated correction factor can be used to generate a correction factor adjusted for leakage through the crystal, fringing of the field produced by the voltage to be measured, and residual temperature dependence of the electro-optic crystal. In a practical embodiment of the invention, shield rings surround both ends of the electro-optic crystal to reduce fringing of the electric field.

摘要翻译： 由于具有旋转反转四倍轴的电光晶体的介电​​常数和半波电压与绝对温度相反，但它们的产品几乎不依赖于温度，所以使用这种电 - 通过测量通过晶体的时间平均电流来提供光学晶体。 通过电流感测电路实现良好的电绝缘，其产生具有与通过晶体的时间平均电流成比例的脉冲速率的脉冲光信号。 将脉冲光信号转换为电信号，以输入到从其计算的数字计算机，以及从参考电流和参考温度下测量的电压以及时间平均电压测量，施加到晶体的温度校正因子 电脑使用的半波电压计算要测量的电压的瞬时值。 可以使用包含与所计算的校正因子相关的经验派生值的查找表来产生校正因子，该校正因子通过晶体的泄漏调整，由待测电压产生的场的边缘以及电光的残余温度依赖性 水晶。 在本发明的实际实施例中，屏蔽环围绕电光晶体的两端，以减少电场的边缘。

公开(公告)号：US5122760A

公开(公告)日：1992-06-16

申请号：US702815

申请日：1991-05-17

申请人： Kazunori Nishijima

发明人： Kazunori Nishijima

IPC分类号： G01R19/32 ,  H03G1/04 ,  H03G3/30

CPC分类号： H03G3/30 ,  G01R19/32 ,  H03G1/04

摘要： A detector for use in an automatic gain control amplifier and operated to generate a gain control voltage in response to an amplitude of the output signal of an amplifier circuit includes five transistors connected in a detector circuit. The first transistor receives a bias voltage at its base and the second transistor receives a true signal of an input signal along with the bias voltage at its base. The third transistor receives a complementary signal of the input signal along with the bias voltage at its base. A first current source is connected in common to the emitters of the first to third transistors. A control voltage is supplied between the bases of the fourth and fifth transistors. A second current source supplies an operating current to the fourth and fifth transistors. A first load is connected in common to the collectors of the first and the fourth transistors. A second load is connected in common to the collectors of the second, third and fifth transistors. A first output terminal of the detector is connected to the collectors of the first and fourth transistors, and a second output terminal of the detector is connected to the collectors of the second, third and fifth transistors. The detector reduces or eliminates temperature dependence of the amplitude of the output of the amplifier circuit.

公开(公告)号：US5057779A

公开(公告)日：1991-10-15

申请号：US505218

申请日：1990-04-05

申请人： James G. Mittel

发明人： James G. Mittel

IPC分类号： G01R19/165 ,  G01R19/32

CPC分类号： G01R19/32 ,  G01R19/16542

摘要： A voltage potential monitoring circuit is operative to set a voltage potential threshold substantially independent of ambient temperature variation. The monitoring circuit includes a first circuit for generating a first current proportional to the voltage potential being monitored, and a second circuit responsive to the first circuit for generating a second current. The voltage potential threshold is set substantially as a function of the first and second currents. The monitoring circuit further includes a circuit responsive to the first and second currents for generating an undervoltage signal when the monitored voltage potential falls below the set voltage potential threshold. The voltage potential monitoring circuit has application in an electronic device which is operational over an ambient temperature range and includes a source of power for generating a voltage potential suitable for energizing the electronic device.

摘要翻译： 电压电位监视电路用于设定基本上与环境温度变化无关的电压电位阈值。 监测电路包括用于产生与被监测的电压电位成比例的第一电流的第一电路和响应于第一电路产生第二电流的第二电路。 电压电位阈值基本上被设置为第一和第二电流的函数。 监测电路还包括响应于第一和第二电流的电路，用于当监测的电压电位低于设定电压电位阈值时产生欠压信号。 电压电位监视电路可应用于在环境温度范围内工作的电子设备，并且包括用于产生适于激励电子设备的电压电位的电源。

公开(公告)号：US4868909A

公开(公告)日：1989-09-19

申请号：US162224

申请日：1988-02-29

申请人： Helmut Lowel

发明人： Helmut Lowel

IPC分类号： G01D5/14 ,  G01D5/16 ,  G01R19/32 ,  G01R33/09

CPC分类号： G01D5/147 ,  G01D5/145 ,  G01R19/32 ,  G01R33/09

摘要： A circuit for deriving a temperature-independent square-wave signal from a measurement signal which consists of a DC component and an AC component and which is taken across a magneto-resistor exposed to an alternating magnetic field. The circuit has a controllable impedance, a timing section with a relatively long time constant, and operational amplifiers with FET inputs.

摘要翻译： 用于从由DC分量和AC分量组成的测量信号中导出与温度无关的方波信号的电路，该测量信号被暴露于交变磁场的磁电阻上。 该电路具有可控阻抗，具有较长时间常数的定时部分和具有FET输入的运算放大器。

公开(公告)号：US4827207A

公开(公告)日：1989-05-02

申请号：US131351

申请日：1987-12-04

申请人： Davide Chieli

发明人： Davide Chieli

IPC分类号： G01R19/00 ,  G01R19/32 ,  G05F3/16

CPC分类号： G01R19/0092 ,  G01R19/32

摘要： A circuit for the linear measurement of a current flowing through a load which comprises a current sensor consisting of a resistor, and a first driver transistor connected to the load and a second transistor connected to the resistor, both transistors being field effect transistors interconnected into a current mirror configuration, which includes an operational amplifier having its inputs respectively connected to the drain electrodes of the first and second transistors to regulate the drain-source voltage of the transistors and enable linear measurement of the load current irrespective of the operating temperature.

公开(公告)号：US4651292A

公开(公告)日：1987-03-17

申请号：US817154

申请日：1986-01-07

申请人： Edmund Jeenicke ,  Manfred Schenk ,  Hans-Jorg Schmid

发明人： Edmund Jeenicke ,  Manfred Schenk ,  Hans-Jorg Schmid

IPC分类号： G01D3/028 ,  G01D3/036 ,  G01L19/04 ,  G01R19/32 ,  G08C21/00

CPC分类号： G01R19/32 ,  G01D3/0365 ,  G01L19/0092 ,  G01L9/025

摘要： In the case of sensors having a characteristic for which the offset in the quiescent condition has a first temperature coefficient and the slope of the characteristic has a second temperature coefficient, while the quotient of the offset and slope coefficients is approximately constant, a point can be determined in which the characteristics for different temperatures (T) intercept. A temperature corrected measurement value can be determined, preferably with a microcomputer, from the sensor signal, the coordinates of the above-described intersection point, the sensor temperature and the temperature coefficient either of the offset or of the slope.

摘要翻译： 在具有静态条件下的偏移具有第一温度系数并且特性的斜率具有第二温度系数的特性的传感器的情况下，偏移和斜率系数的商近似恒定的情况下， 确定不同温度（T）截距的特征。 可以根据传感器信号，上述交叉点的坐标，传感器温度和偏移量或斜率的温度系数来确定温度校正测量值，优选地使用微型计算机。