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IEEE Transactions on Instrumentation and Measurement

Issue 3 • Sept. 1965

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Displaying Results 1 - 17 of 17
  • [Front cover]

    Publication Year: 1965, Page(s): c1
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1965, Page(s): c2
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  • Table of contents

    Publication Year: 1965, Page(s): 101
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  • A Single Bead Broadband Coaxial Thermistor Mount

    Publication Year: 1965, Page(s):102 - 106
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (907 KB)

    A new broadband coaxial thermistor mount is described which has as its major feature the virtual elimination of a dc to RF substitution error commonly encountered in the measurement of the RF power. Secondary features include the simplicity of the design and the potential ease of matching thermistors for temperature-compensated power measurements. The termistor mount utilizes a single center tappe... View full abstract»

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  • The Reflected Impedance of a Circular Coil in the Proximity of a Semi-Infinite Medium

    Publication Year: 1965, Page(s):107 - 116
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1694 KB)

    Most analyses on a circular coil when used in the eddy current method for nondestructive testing are empirical. Theories based on simple models are often inadequate to account for some experimental observations when the spacing between the coil and the material became small. In the present paper this problem is formulated as a boundary value problem. Wave equations of the magnetic vector potential... View full abstract»

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  • Gearing Errors as Related to Alignment Techniques of the Rotary-Vane Attenuator

    Publication Year: 1965, Page(s):117 - 123
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1194 KB)

    An analysis of the measured errors of a large number of rotary-vane attenuators has shown that the systematic error present is correlated with vane misalignment. This paper shows that a study of the gear mechanism used to drive the rotating vane has revealed an additional systematic error for which corrections can be made. This error is the angular displacement caused by eccentricity. Graphs are u... View full abstract»

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  • An International Comparison of Inductive Voltage Divider Calibrations at 400 and 1000 Hz

    Publication Year: 1965, Page(s):124 - 131
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1621 KB)

    The establishment and maintenance of the highest possible order of accuracy for the measurements of voltage ratio and phase angle are responsibilities of the national laboratories. This paper reports the results of an international comparison of a seven-decade inductive voltage divider by the United States National Bureau of Standards and the National Research Council of Canada. The calibration te... View full abstract»

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  • Sliding Contacts between Superconductors

    Publication Year: 1965, Page(s):132 - 135
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (793 KB)

    The effect of relative motion on the contact resistance between certain superconductors has been investigated. Results are presented for a variety of speed, pressure, and current conditions for lead-lead contacts of the slip-ring type in which one or both members are electroplated with a thin layer of normal metal. View full abstract»

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  • Adjustable Complex-Ratio Transformer

    Publication Year: 1965, Page(s):135 - 141
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2038 KB)

    A four-terminal network in which the complex output-to-input ac current or voltage ratio may be adjusted is described. The design of an experimental Adjustable Complex-Ratio Transformer for use at a frequency of 60 Hz, in which the output-to-input current ratio (Io/Ii = ??+j??) can be adjusted with two sets of 5 decade dials to 0.1 percent accuracy, is presented. The application of the instrument ... View full abstract»

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  • The Design, Construction, and Performance of a Wide Range of DC Conductance Bridge

    Publication Year: 1965, Page(s):142 - 145
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1862 KB)

    A dc conductance bridge for laboratory use is described which embodies a combination of features not found in any other bridge. The range of measurement extends from 10-15 mho to 1 mho, and the minimum detectable change in conductance is 4X10-16 mho. Bridge voltages of 6, 45, and 135 volts may be applied. Since the highest resistance arm is only 107 ohms, the time constant of the bridge is small a... View full abstract»

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  • An Expanded Scale Ohmmeter

    Publication Year: 1965, Page(s):146 - 148
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1150 KB)

    Probably no instrument is used more than the laboratory ohmmeter. Perhaps because of the appearance of sensitive meter movements with large scales and the addition of electronic amplification, no instrument has seen less development in its basic design and none is more deserving of reappraisal. One of the basic defects in all existing ohmmeters is the scale-crowding which naturally occurs when a r... View full abstract»

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  • Comparison of Standard Resistors by the DC Current Comparator

    Publication Year: 1965, Page(s):149 - 156
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1536 KB)

    Measurements and comparison of standard resistors are generally carried out in Standards Laboratories employing the well-known Wheatstone and Kelvin bridges. In the present paper the use of a dc current comparator has been described in order to compare a set of standard resistors. The results obtained lie within 1 to 5 ppm of those determined by the conventional methods. It is believed that with s... View full abstract»

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  • Simple, Stable and Reliable Transistorized DC Amplifiers

    Publication Year: 1965, Page(s):156 - 159
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (806 KB)

    A transistor dc feedback voltage amplifier using a differential input stage followed by a single common emitter stage is analyzed to obtain the gain and drift rate dependence on temperature. It is found that under typical restraints on allowable input terminal current, the open loop gain of such an amplifier is restricted to a value only somewhat greater than twenty (q/2kT) times the voltage acros... View full abstract»

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  • Measurement of Photoinduced Discharge Currents and Voltages

    Publication Year: 1965, Page(s):160 - 166
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2726 KB)

    An apparatus has been developed for monitoring the instantaneous surface potential of photoconductive insulators during illumination. In addition, instrumentation methods have been evolved for measuring the effective photoinduced discharge current, transit time, and mobility of charge carriers in such materials. The device has proved useful and convenient for qualitative evaluation of the photoind... View full abstract»

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  • Correction [to "The compensated current comparator; A new reference standard for current-transformer calibrations in industry"]

    Publication Year: 1965, Page(s): 166
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (254 KB)

    N.L. Kusters and W.J. M. Moore, authors of the "The Compensated Current Comparator; A New Reference Standard for Current-Transformer Calibrations in Industry," which appeared on pages 107-114 of the June-September, 1964, issue of these Transactions, has called the following to the attention of the Editor. On page 112 the caption for Fig. 10 should read "... (1/1 ratio)," instead of "(11/ratio)." View full abstract»

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  • Contributors

    Publication Year: 1965, Page(s):167 - 169
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  • Invitation for contributions

    Publication Year: 1965, Page(s): 169-a
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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
800 King Edward Ave.
Ottawa, Ontario
K1N 6N5 CANADA
Fax: 613-562-5664
shervin@discover.uottawa.ca