IEEE Transactions on Instrumentation and Measurement

Issue 1/2 • March-June 1966

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Displaying Results 1 - 19 of 19
  • [Front cover]

    Publication Year: 1966, Page(s): c1
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1966, Page(s): c2
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  • Table of contents

    Publication Year: 1966, Page(s): 1
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  • A Note on the Construction of Wideband Admittance Bridges

    Publication Year: 1966, Page(s):2 - 5
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (655 KB)

    It is necessary to have precise control over the phase relation of the voltages on the unknown and the standards, in order to measure accurately, by bridge methods, the small component of an admittance composed of a small real part, and a large imaginary part, or vice versa. Under adverse conditions (i.e., when the argument of the admittance is within 1° of the axis), a phase error of only 0.... View full abstract»

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  • Control Chart for Saturated Standard Cells

    Publication Year: 1966, Page(s):6 - 8
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (585 KB)

    A method is presented for measuring and plotting the EMFs of a bank of saturated standard cells relative to each other, without requiring calculations. A summation of the results serves as an indicator of the quality of the measurements. The method is applicable also for the maintenance and control of other standards. View full abstract»

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  • A Precision Phase Meter

    Publication Year: 1966, Page(s):9 - 19
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1738 KB)

    A new precision phase meter is described. The basic 20-c/s to 100-kc/s unit covers a 1-mV to 3-V range. This combines with a 1.5- to 45-Mc/s unit which operates between 300 μV and 30 mV without adjustment. Any reference phase may be set to zero with an internal 360° phase shifter. Phase may be read from an internal meter or from a calibrated divider, but for a digital voltmeter, or fo... View full abstract»

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  • A Study of the Stationarity of Laboratory Random Noise Generators

    Publication Year: 1966, Page(s):20 - 24
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1700 KB)

    The concept of stationarity, using time averages, as applied to electronic noise generators is outlined. Details of an experiment to determine the output stationarity of several commercial noise generators, by evaluating the time variation in their output mean-square values, are presented. Included are discussions of experimental error and inherent limitations in measuring a random signal. View full abstract»

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  • An Electronic Probability Density Machine

    Publication Year: 1966, Page(s):25 - 29
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2895 KB)

    A relatively simple semiconductor circuit is described which will present an output plot of probability density p(v) vs. the variable v. Experimental data is presented and compared with theoretical expectations for variations of variables such as amplitude, frequency, waveshape, and "sampling window width." View full abstract»

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  • Development of an Instantaneous Electromagnetic Torque Measuring System

    Publication Year: 1966, Page(s):29 - 33
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2719 KB)

    The following paper describes a technique for measuring torques developed by various transducers. The technique was used to measure the instantaneous electromagnetic torque of a two-phase servomotor, and some test data are included. This measuring technique was developed for the purpose of obtaining test data to correlate with the analysis portion of the author's Ph.D. thesis on Phase Plane Soluti... View full abstract»

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  • A Comparison of Integration and Low-Pass Filtering

    Publication Year: 1966, Page(s):33 - 38
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (923 KB)

    A comparison of the ideal integrator and low-pass filters has been made. Many experimenters use an integrator to filter out high-frequency noise from their data, whereas a properly designed low-pass filter will remove more noise and distort the signal less. Viewed as a low-pass filter, the integrator is superior to the RC filter but inferior to higher order filters. An integrating digital voltmete... View full abstract»

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  • Zero-Crossing Principle for Detecting Narrow-Band Signals

    Publication Year: 1966, Page(s):38 - 43
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (977 KB)

    This paper describes a zero-crossing principle for detecting weak narrow-band signals immersed in Gaussian noise. The principle is simple to implement and leads to a zero-crossing detector, comparable in performance to a square-law detector. The zero-crossing principle has many of the properties associated with the incoherent phase principle of signal detection. Unlike the square-law detector, the... View full abstract»

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  • Microwave Attenuation with Photoconductive Materials

    Publication Year: 1966, Page(s):44 - 47
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2362 KB)

    The phenomenon of photoconductivity has been used to control the transmission of microwave energy in a waveguide with a beam of light. Samples were made from a mixture of "sensitized" cadmium sulfide powder and polymerized methacrylate, one form of which is known by the trade name "lucite." When these samples were centered as slabs in a waveguide, an illuminated attenuation of seven decibels was p... View full abstract»

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  • The Performance and Capability of Cesium Beam Frequency Standards at the National Bureau of Standards

    Publication Year: 1966, Page(s):48 - 55
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2757 KB)

    NBS II, the older of the two cesium atomic beam frequency standards which are used alternatively as the United States Frequency Standard, has been operating for more than five years. The contribution to inaccuracy produced by uncertainties in the C field has been reduced by a factor of 30 to ±2 × 10-13. The average precision of measurement (standard deviation of the mean) has been demons... View full abstract»

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  • Evaluation of a Thallium Atomic Beam Frequency Standard at the National Bureau of Standards

    Publication Year: 1966, Page(s):55 - 58
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1835 KB)

    The original NBS cesium standard (NBS I) has been converted to a thallium standard and was operated for one and one-half years with a typical precision of 2 × 10-12 and an accuracy of 1 × 10-11. Experiments are described which were performed to establish these precision and accuracy estimates. These results, which are comparable to those obtained with longer cesium standards, are conside... View full abstract»

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  • Power Measurements by Means of Thermally Excited Mechanical Vibrations

    Publication Year: 1966, Page(s):59 - 61
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    The periodic absorption of heat on the surface of a material produces a periodically varying temperature distribution in the material near the surface as well as an increase of the average temperature. The periodic component of temperature is largest on the surface and falls off with distance from the surface. This fact brings about periodic internal stresses. These stresses under proper circumsta... View full abstract»

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  • A Self-Balancing Current Comparator

    Publication Year: 1966, Page(s):62 - 71
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2495 KB)

    The development and construction of a self-balancing current comparator is presented. In principle, the instrument incorporates in one unit a current transformer and a current comparator. The transfer of power from the source to the burden is achieved with the current transformer. The current comparator detects the error current of the transformer and controls a feedback amplifier which supplies t... View full abstract»

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  • Contributors

    Publication Year: 1966, Page(s):72 - 73
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1966, Page(s): 73a
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  • Invitation for contributions

    Publication Year: 1966, Page(s): 73-b
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Aims & Scope

Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief

SHERVIN SHIRMOHAMMADI
School of EECS
University of Ottawa
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