IEEE Transactions on Instrumentation and Measurement

Issue 1 • March 1968

Filter Results

Displaying Results 1 - 21 of 21
  • [Front cover]

    Publication Year: 1968, Page(s): c1
    Request permission for commercial reuse | PDF file iconPDF (85 KB)
    Freely Available from IEEE
  • IEEE Instrumentation and Measurement Group

    Publication Year: 1968
    Request permission for commercial reuse | PDF file iconPDF (153 KB)
    Freely Available from IEEE
  • Table of contents

    Publication Year: 1968, Page(s): 1
    Request permission for commercial reuse | PDF file iconPDF (88 KB)
    Freely Available from IEEE
  • The Design of Stabilized Power Supplies for Incandescent Light Sources

    Publication Year: 1968, Page(s):2 - 12
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2167 KB)

    Incandescent lamps are used as wide-band sources of light in many optical/electronic instruments, and the present paper describes some approaches to the design of stabilized power units for these lamps. Both dc and pulse-width modulated ac supplies are described, and a series of design equations for the latter are established. Where the lamp voltage is to be monitored rather than the light output ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fast Light-Pulse Measurement Schemes

    Publication Year: 1968, Page(s):12 - 18
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2361 KB)

    An ultrafast circuit for photodiodes makes it possible to realize the highest fidelity and fastest time domain response capabilities (on the order of 100 ps rise-time response) for measuring fast light pulses. The circuit utilizes triaxial cable as a simple improved means of overcoming the inherent response limitations posed by customary photodiode circuits and components. The triaxial cable circu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Automatic Data Acquisition System for Semiconductor Device Testing

    Publication Year: 1968, Page(s):19 - 28
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4389 KB)

    An automatic data acquisition system was designed and fabricated from both commercially available and proprietary special-purpose equipment to obtain the large quantities of accurate voltage versus current data needed to define and study the voltage-current characteristics of semiconductor devices exposed to neutron bombardment. The operation of the system in tracing out the entire current-voltage... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comparison of Actively Leveled Test Platforms

    Publication Year: 1968, Page(s):28 - 39
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2494 KB)

    The most level stable test pads now available utilize a platform which is slaved to leveling accelerometers. If, in addition to accelerometers, gyros are used, the resulting active pad will have performance substantially better than the corresponding semiactive pad. In order to bring out the important characteristics of active pads, they are compared in detail to passive and semiactive pads. This ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Current Comparator Using Ferromagnetic Cores and Its Application to Analog-to-Digital Converters

    Publication Year: 1968, Page(s):40 - 46
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1139 KB)

    A current comparator using ferromagnetic cores with a rectangular hysteresis loop is described. Design criteria for this comparator are derived from the B-H characteristics of the core. To verify the performance of the current comparator, basic experiments and experimental A-D converters with these comparators have been made. By application of the current comparator, it would be possible to realiz... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Application of the Potentiometer Method for Measurements of Small Electrical Resistances

    Publication Year: 1968, Page(s):47 - 48
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (303 KB)

    A special application of the potentiometer method (Poggendorff method) for measuring low resistances is described. In this application, the voltage for the potentiometer (assistant current) is taken from the same measuring current passing the unknown resistance RX. Therefore, the influence of a variation of the current up to 25 percent during the measurement of the voltage drop across RX is elimin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-Frequency Measurement of Electric Fields Using a Telemetering Probe

    Publication Year: 1968, Page(s):49 - 55
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2096 KB)

    When image plane construction is impossible, accuracy of field strength measurements is greatly reduced by the presence of connecting cables and apparatus. This problem may be circumvented by telemetering the field information to a distant control station. This paper describes a system designed to measure relative electric field strengths at 26 MHz. The sensing probe employs a voltage comparison t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Theory of Frequency Syntesis

    Publication Year: 1968, Page(s):56 - 68
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2234 KB)

    The design of a system for the synthesis of one frequency from another is discussed in terms of mathematical methods of approximating real numbers, the ratio of the frequencies being the number approximated. A general equation describing the frequency synthesis process is derived and it is shown, using charts, how block diagrams for a frequency synthesizer can be developed from the solutions of th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A New Transistor Square-Wave Generator Using Two Regenerative Switches

    Publication Year: 1968, Page(s):68 - 73
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1709 KB)

    The operation and performance of a new type of circuit for square-wave generation is presented. The circuit is based on the application of two identical regenerative switches using complementary transistors, the operation of which is controlled by a single timing capacitor. Rise and fall times of the output pulses can be made to depend almost entirely on the switching speed of the transistors, and... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Rocket Vehicle Surface Reflectance Measurement during Retro-Rocket Firing

    Publication Year: 1968, Page(s):73 - 75
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (494 KB)

    This paper describes an experiment and presents data on the reflectance variation of a painted surface during the period when a solid propellant rocket is being fired on the surface. The measurement was made with a helium-neon laser, and the data can be used for heat-transfer calculations. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of High-Temperature Processing on the Aging Behavior of Precision 5-MHz Quartz Crystal Units

    Publication Year: 1968, Page(s):76 - 79
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1790 KB)

    The influence of contamination level on the aging behavior of quartz crystal resonators has been studied. Resonators were made using high-temperature bonding techniques and were baked prior to sealing in both dry hydrogen and under high vacuum in order to minimize the level of contamination within the enclosure. The initial stabilization period for the frequency drift rate to reach 3 parts per 101... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Synchronous Sweep Frequency Oscillator

    Publication Year: 1968, Page(s):80 - 88
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1875 KB)

    This paper describes a linear frequency sweep oscillator which is accurately controlled by a master clock. The voltage controlled oscillator which generates the frequency sweep is first phase-locked to the master clock. Then, a ramp generator drives the voltage controlled oscillator over the required frequency range, while a phase-sampling loop controls the instantaneous frequency to the desired r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Potentiometric Method for Transducing Large-Scale Position Using Tensioned Flexible Wires in Trilateration

    Publication Year: 1968, Page(s):89 - 98
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2479 KB)

    Determination of position by triangular, rather than Cartesian, coordinates is outlined and formulated. The use of tensioned flexible wires to determine position is discussed from the theoretical and practical viewpoint. Details are given of an experimental Resiwire method, which achieved a precision of 1:18 000 and an accuracy of 1:4000 when determining position within an area 90 by 50 feet. Desi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of Unsymmetrical T Attenuators as Compensated Ayrton Shunts

    Publication Year: 1968, Page(s):99 - 101
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    It is shown that an unsymmetrical constant input resistance T attenuator may be considered as a compensated (constant resistance) Ayrton shunt. Designs are given for a decimal and a dB attenuator. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Contributors

    Publication Year: 1968, Page(s):102 - 104
    Request permission for commercial reuse | PDF file iconPDF (3269 KB)
    Freely Available from IEEE
  • Announcement

    Publication Year: 1968, Page(s): 104
    Request permission for commercial reuse | PDF file iconPDF (889 KB)
    Freely Available from IEEE
  • IEEE Instrumentation and Measurement Group

    Publication Year: 1968, Page(s): 104a
    Request permission for commercial reuse | PDF file iconPDF (52 KB)
    Freely Available from IEEE
  • Invitation for Contributions

    Publication Year: 1968, Page(s): 104-b
    Request permission for commercial reuse | PDF file iconPDF (104 KB)
    Freely Available from IEEE

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