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IEEE Transactions on Instrumentation and Measurement

Issue 3 • Sept. 1982

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Displaying Results 1 - 18 of 18
  • Table of contents

    Publication Year: 1982, Page(s): 1
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  • [Inside front cover]

    Publication Year: 1982, Page(s): c2
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  • In Memoriam

    Publication Year: 1982, Page(s): 153
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  • Measurement of the state of battery charge using an improved loaded voltmeter test method

    Publication Year: 1982, Page(s):154 - 158
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (983 KB)

    An improved loaded voltmeter test (ILVT) was developed based on the preparation of a table of voltage measurements of the tested battery with a constant resistor load as a function of the state of charge. The function is stored in the memory of the microcomputer; when a certain value of the charge is then needed, it can be found using the ILVT and the stored function. The action of the power syste... View full abstract»

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  • An alternating current bridge for comparing four-terminal-pair impedances at ω = 104 rad/s

    Publication Year: 1982, Page(s):159 - 165
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1313 KB)

    An AC bridge has been developed for comparing capacitances from 10 to 1000 pF and resistances from 1 to 100 kΩ with a relative uncertainty of about 6×10-8 at ω=104 rad/s using an inductive voltage divider (IVD) with a nominal ratio of 1:10. Apart from these two quantities the difference in the dissipation factor of the capacitances can be determined with ... View full abstract»

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  • A four-point probe method with increased accuracy for the local determination of the thickness of thin, electrically conducting layers

    Publication Year: 1982, Page(s):166 - 175
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1805 KB)

    The error analysis for an infinite thin conductive plate shows that a four-point probe resistivity-to-thickness ratio measurement method with circularly arranged contact tips based on two pairs of measured current and voltage values obtained by cyclical exchange of the connections yields extremely low measurement errors due to contact misalignment. Conventional four-point probe measurement methods... View full abstract»

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  • Microcomputer instrumentation to reduce residential energy use

    Publication Year: 1982, Page(s):175 - 180
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1270 KB)

    A microcomputer-based instrument controls residential space and water heating to provide a reduction in the consumption of energy. Using an RCA 1802 microprocessor and CMOS logic devices, the controller monitors ambient and water temperatures with thermistors, and operates the furnace and water-heating processes through solid-state relays. Programmable over a one-week cycle with up to eight set po... View full abstract»

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  • Coherent image fringe contrast measurement with sensing arrays

    Publication Year: 1982, Page(s):180 - 184
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1178 KB)

    Two methods are described for measuring interferometric fringe contrast with sensing arrays. The absence of air turbulence allows contrast to be determined quickly by measuring the intensity of the fringe pattern at phases 90° apart. The presence of turbulence requires that the peak-to-peak fringe intensity be found by sampling the fringes as they are scanned across the array. An analysis i... View full abstract»

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  • A phase-stabilized local-oscillator system for a synthesis radio telescope

    Publication Year: 1982, Page(s):185 - 192
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1636 KB)

    A system is described which delivers signals of precisely controllable frequency and phase to remote points. The system is used to provide local-oscillator signals at widely separated antennas in a synthesis radio telescope operating at 1.4 GHz. Phase accuracy is 1.1° rms. The system is a closed-loop phase-control circuit employing phase-locked loops. A reference signal is supplied to the s... View full abstract»

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  • The IEEE/IEC pulse standards — Basic tools for waveform analysis

    Publication Year: 1982, Page(s):192 - 198
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1266 KB)

    Describes the organization and content of the new IEEE pulse standards and presents material that illustrates their use. These standards (and their International Electrotechnical Commission counterparts) complement instruments that digitize, store, and analyze waveforms. Together, the standards and these relatively new instruments provide means for automated pulse waveform analysis. View full abstract»

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  • An improved automatic test system for VLSI parametric testing

    Publication Year: 1982, Page(s):198 - 205
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1680 KB)

    Automated and thorough characterization of MOS transistors has been made possible by using a minicomputer-based instrumentation system. A low-current circuit capable of forcing current levels down to the range of 10 pA has been designed on the personality board, allowing fast measurements of subthreshold characteristics. A comprehensive test program has been developed to extract device parameters,... View full abstract»

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  • A simple parameter measurement system for solar cells

    Publication Year: 1982, Page(s):206 - 207
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    A simple measurement system which quickly obtains the relevant parameters Voc, Isc, Pmax, and Vmax of a solar cell under illumination has been described. The system has reasonably good accuracy and should save considerable testing time and effort in applications where a large number of solar cells have to be tested, characteri... View full abstract»

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  • Automation of a Crawford-cell exposure system

    Publication Year: 1982, Page(s):207 - 210
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    An automated 50-Ω Crawford cell exposure system for irradiating laboratory animals in the 225-500-MHz frequency range is described. Power measurements are obtained and analyzed in this system via an HP 436A power meter under the control of an LSI-11 minicomputer. Dosimetric information, in terms of the specific absorption rate (SAR), is collected with the minicomputer automatically measurin... View full abstract»

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  • Measurement of 1/f noise using a contact-free current-driving scheme

    Publication Year: 1982, Page(s):210 - 212
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (858 KB)

    A method is proposed to measure the 1/f noise of resistance materials without using current driving contacts. Alternating current is induced in a ring-shaped sample by an AC magnetic flux. Good agreement was obtained between data using this method and the conventional four-probe method. The contact-free method is superior for measuring the 1/f noise in those materials upon which ohmi... View full abstract»

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  • Error analysis of phase-insensitive coherent (homodyne) detectors

    Publication Year: 1982, Page(s):212 - 214
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (843 KB)

    The phase and amplitude errors of a phase-insensitive coherent (homodyne) detector are analyzed. The detector consists of two balanced mixers which are fed in quadrature phase by one of the RF inputs, followed by a phase-quadrature combiner. Inherent detection errors due to an unwanted carrier in the double sideband modulated signal are analyzed first. Then errors due to the amplitude and phase un... View full abstract»

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  • Contributors

    Publication Year: 1982, Page(s):215 - 216
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  • A communication from the editor on the special reader's opinion survey

    Publication Year: 1982, Page(s):217 - 219
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  • [Advertisements]

    Publication Year: 1982, Page(s): 1
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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