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88 条记录 (耗时 0.02 秒)

    Logarithmic-response corona detector
    81.
    发明授权
    Logarithmic-response corona detector 失效
    逻辑反应CORONA检测器

    公开(公告)号：US3727129A

    公开(公告)日：1973-04-10

    申请号：US3727129D

    申请日：1971-02-05

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： HUMMERT G

    IPC分类号： G01R31/02 ,  G01R31/12 ,  G01R31/14 ,  G01R15/10

    CPC分类号： G01R31/12 ,  G01R31/02 ,  G01R31/14

    摘要： Apparatus for detecting and measuring corona discharges. A sensing circuit is connected to the apparatus, material or sample which is being tested. The output of the sensing circuit is connected to a detector which converts the corona produced pulse signal from the sensing circuit into a voltage which can be observed. The response of the detector circuit is such that the output voltage thereof is approximately equal to the logarithm of the input voltage produced by the corona discharge. The amplitude of the pulse may be observed by an oscilloscope, a chart recorder, or a meter.

    摘要翻译： 用于检测和测量电晕放电的装置。 感测电路连接到被测试的设备，材料或样品。 感测电路的输出连接到检测器，该检测器将来自感测电路的电晕产生的脉冲信号转换成可以观察到的电压。 检测器电路的响应使得其输出电压近似等于由电晕放电产生的输入电压的对数。 脉冲的幅度可以由示波器，图表记录仪或仪表观察。

    Core-magnet type instrument having linear response characteristic
    82.
    发明授权
    Core-magnet type instrument having linear response characteristic 失效
    具有线性响应特性的核心磁体型仪器

    公开(公告)号：US3711776A

    公开(公告)日：1973-01-16

    申请号：US3711776D

    申请日：1970-11-16

    申请人： CANON KK ,  CANON DENSHI KK

    发明人： INAMI T ,  TAKIZAWA Y

    IPC分类号： G01R1/38 ,  G01R1/16 ,  G01R15/10

    CPC分类号： G01R1/38

    摘要： A core magnet type instrument which renders a linear response characteristic comprises a magnet core, a yoke surrounding and spaced apart from the magnet core to form an air gap therebetween, and a moving coil movable in the air gap and having a pointer. The magnet core is shaped into an ellipse to improve a response characteristic of the instrument.

    摘要翻译： 具有线性响应特性的铁芯型仪器包括磁芯，围绕磁芯并与之隔开的磁轭，以形成气隙，以及可在气隙中移动并具有指针的运动线圈。 磁芯被成形为椭圆形以改善仪器的响应特性。

    Analog/digital meter having front indicator means overlying a rear indicator means
    83.
    发明授权
    Analog/digital meter having front indicator means overlying a rear indicator means 失效
    具有前指示器的模拟/数字仪表意味着后面的指示符

    公开(公告)号：US3689835A

    公开(公告)日：1972-09-05

    申请号：US3689835D

    申请日：1970-09-10

    申请人： VEEDER INDUSTRIES INC

    发明人： BICKFROD JOHN H

    IPC分类号： G01D13/26 ,  G01G19/02 ,  G01R15/10 ,  G01R1/20

    CPC分类号： G01G19/021 ,  G01D13/26

    摘要： An analog/digital meter comprising a transparent liquid crystal numeral indicator and an analog indicator with a pivotal needle mounted behind the numeral indicator. A mode selector switch provides for selectively operating the numeral and analog indicators for selectively presenting corresponding digital and analog readings in accordance with the voltage of an input electrical signal and the setting of a range selector switch. A wire magnet is mounted on the pivotal needle of the analog indicator, and a magnetic pickup head is pivotally mounted to be set at any point along the arc of travel of the wire magnet to generate a predetermining signal when the needle moves into alignment with the pickup head.

    摘要翻译： 一种包括透明液晶数字指示器和模拟指示器的模拟/数字仪表，其具有安装在数字指示器后面的枢转针。 模式选择器开关用于选择性地操作数字和模拟指示器，以根据输入电信号的电压和量程选择开关的设置选择性地呈现对应的数字和模拟读数。 电线磁铁安装在模拟指示器的枢转针上，并且磁性拾取头被枢转地安装，以便沿着线磁体的行进弧线的任何点设置，以在针移动与线磁体对准时产生预定信号 拾音头。

    Nonlinear rate-measuring instrument
    84.
    发明授权
    Nonlinear rate-measuring instrument 失效
    非线性速率测量仪器

    公开(公告)号：US3634761A

    公开(公告)日：1972-01-11

    申请号：US3634761D

    申请日：1969-05-19

    申请人： AMERICAN OPTICAL CORP

    发明人： DAY CHRISTOPHER C

    IPC分类号： G01R23/09 ,  G01R23/02 ,  G01R15/10

    CPC分类号： G01R23/09

    摘要： A nonlinear rate-measuring instrument. A multivibrator controls the generation of fixed-amplitude current pulses at a rate equal to that of an input signal whose rate is to be measured. The pulses are averaged and the output voltage is a function of the input rate. This generally linear type of operation is made nonlinear by using the output voltage to control the period of the multivibrator, i.e., the width of each generated current pulse. High-scale or low-scale compression can be achieved depending on whether the output signal is used to decrease or increase the multivibrator period.

    摘要翻译： 非线性速率测量仪器。 多谐振荡器以等于要测量速率的输入信号的速率控制固定幅度电流脉冲的产生。 脉冲是平均的，输出电压是输入速率的函数。 通过使用输出电压来控制多谐振荡器的周期，即每个产生的电流脉冲的宽度，这种通常线性的操作是非线性的。 取决于输出信号是用于减少还是增加多谐振荡器周期，可以实现大规模或低压缩。