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IRE Transactions on Instrumentation

Issue 3 • Dec. 1962

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Displaying Results 1 - 25 of 52
  • [PDF Not Yet Available In IEEE Xplore]

    Publication Year: 1962, Page(s): c1
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    Freely Available from IEEE
  • [Table of contents]

    Publication Year: 1962, Page(s): 81
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    Freely Available from IEEE
  • The Evolution of a Conference

    Publication Year: 1962, Page(s): 82
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  • Precision and Accuracy in Electromagnetic Measurements

    Publication Year: 1962, Page(s):83 - 85
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  • Measurement Problems of Space Vehicle Experiments

    Publication Year: 1962, Page(s):86 - 96
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    The need for conducting remote measurements by use of experimental sensors on space vehicles, in an environment where there is often a large uncertainty in the parameter to be measured, establishes a new area of endeavor for the researcher. The conditions peculiar to this problem are in many instances vastly different from those normally encountered in laboratory research, and are related to the o... View full abstract»

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  • A Direct Measurement of Charge Density in the F2 Region

    Publication Year: 1962, Page(s):96 - 99
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (514 KB)

    A measurement of the charge density in the F2 region was made in 1962 with an ion trap mounted on an oriented satellite. Orbital monitoring of ionospheric characteristics continued for about four days. Current from collected ions, grid modulated by a triangular sweep voltage, indicated charge density, temperature, vehicle potential and some information on ion mass ratios. The current-me... View full abstract»

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  • Automatic Range Switching of Instrumentation in Space Vehicles for Increased Accuracy

    Publication Year: 1962, Page(s):100 - 102
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (546 KB)

    This paper describes an instrument, suitable for space flight, which automatically switches the range of a measuring instrument, and thus makes possible accurate measurements of electronic signals that vary by several orders of magnitude. The accurate measurement of current, voltage, or pulses, etc., that vary by several orders of magnitude has been a difficult problem. Wide dynamic ranges of this... View full abstract»

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  • Lunar Surface and Subsurface Magnetic Susceptibility Instrumentation

    Publication Year: 1962, Page(s):102 - 106
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (997 KB)

    Multicoil induction measurements of the lunar surface and subsurface magnetic susceptibility are under study. Major considerations are the improvement of the accuracy and logging ability of various probe configurations. Special boundary conditions of high vacuum, extreme ambient temperature variation, restriction to mechanically passive systems, simple electronics, low power and light weight all c... View full abstract»

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  • Absolute Magnetic Susceptibilities by the Gouy and the Thorpe-Senftle Methods

    Publication Year: 1962, Page(s):106 - 109
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1467 KB)

    Using the Curie-Cheneveau principle, A. Thorpe and F. E. Senftle have developed an absolute yet simple force method for measuring the magnetic susceptibilities of very small samples. In our laboratory an apparatus was constructed so that absolute susceptibilities could be determined by both the Thorpe-Senftle and the Gouy methods down to liquid helium temperatures. Measurements were made on powder... View full abstract»

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  • The Design and Performance of High-Precision Audio-Frequency Current Transformers

    Publication Year: 1962, Page(s):109 - 114
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    The causes of error with increasing frequency in current transformers of existing design are examined. A new approach in design is suggested and equations are developed from which the performance can be calculated for a variety of operating conditions over a wide band of audio frequencies. Practical details are given of a group of multiratio transformers rated from 5/5 to 400/5 designed for the ra... View full abstract»

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  • A New Peak-to-DC Comparator for Audio Frequencies

    Publication Year: 1962, Page(s):115 - 122
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4644 KB)

    An adjustment-free peak-to-dc transfer technique is described for making precision comparisons between audio frequency ac voltages and a reference dc. Limitations and estimated systematic errors are discussed and justifications for an over-all ac-dc transfer worst case error of 50 ppm presented. Photographs of output oscilloscope patterns are shown for various conditions of ac-dc transfer agreemen... View full abstract»

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  • Low-Power-Operated DC Instrument Transformers

    Publication Year: 1962, Page(s):122 - 127
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    In view of the various applications of nonlinear-magnetic control devices in earth-satellite equipment with solar-battery supply, a low-power-operated prototype design of a miniaturized dc instrument transformer with single-turn or multiturn control has been recently developed. This design combines a saturable-reactor push-pull circuit with a battery-supplied switching-transistor magnetic-core mul... View full abstract»

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  • A Direct Reading Voltage Divider with Standard Cell Reference

    Publication Year: 1962, Page(s):128 - 132
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2258 KB)

    A highly accurate Direct Reading Voltage Divider has been developed in which the output voltage is equal to that of a standard cell when the input resistance has been adjusted so that 1 ma of current is flowing through the divider. The range of measurement with direct reference to a standard cell is from 2 to 1100 v. The range may be lowered to 0.02 v with decreased accuracy by the use of a Lindec... View full abstract»

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  • Uncertainties in Calibration

    Publication Year: 1962, Page(s):133 - 138
    Cited by:  Papers (1)
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    This paper presents some methods for making comparisons between standards and items undergoing calibration. These methods may be used in a variety of measurements. The purpose is to accumulate data that provide objective estimates of the precision and that are also useful in detecting sources of systematic errors. This purpose is achieved in using some standard statistical designs in the schedulin... View full abstract»

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  • The Speed of Light

    Publication Year: 1962, Page(s):138 - 148
    Cited by:  Papers (14)
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    Numerous measurements of the speed of light published during the last 30 years lead to widely divergent results as compared with the assigned experimental uncertainties. Because of wide diversity in the methods employed in the measurements, all of the data may not be combined effectively in a grand average. Sufficient data had been obtained by the geodimeter method to group them and derive a stati... View full abstract»

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  • Automatic DC Data Logging System

    Publication Year: 1962, Page(s):148 - 152
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (974 KB)

    A system is described which digitizes dc voltages and records the values on punched cards for subsequent machine data reduction. High accuracy is achieved by comparing the input voltage to a bank of standard cells and measuring the difference. An automatic calibration routine is provided. Resolution is one part per million, stability a few parts per million for a 30-day period without adjustment. ... View full abstract»

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  • Variance of Radio Frequency Caused by Atmospheric Turbulence in Line-of-Sight Transmissions

    Publication Year: 1962, Page(s):153 - 155
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (557 KB)

    The frequency stability of a radio signal propagated over a line-of-sight path is reduced by time variations in phase velocity along the path. This instability caused by the atmosphere will produce errors in frequency measurements made by averaging a standard frequency transmission over a period of time T and also in time interval measurements made by counting the number of cycles of the standard ... View full abstract»

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  • Microwave Faraday Rotation Using a Bimodal Cavity

    Publication Year: 1962, Page(s):156 - 159
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (838 KB)

    A technique has been developed for using a bimodal cavity to measure Faraday rotation at microwave frequencies with high sensitivity. Such measurements yield information about the off-diagonal elements of either the susceptibility or conductivity tensor of the sample being investigated. This paper presents a qualitative discussion of the behavior and use of this cavity. Previously presented analys... View full abstract»

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  • The Microwave Measurement of Narrow Line Width Ferromagnets by Radiated Fields

    Publication Year: 1962, Page(s):159 - 162
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1446 KB)

    A simple waveguide method for measuring narrow line widths of ferromagnets is discussed. The precision reported from the measurement of a single crystal YIG sphere is ¿H=0.55±0.02 oersted. The equipment used is capable of modification for more precise measurements. View full abstract»

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  • Measurement and Standardization of Dielectric Samples

    Publication Year: 1962, Page(s):162 - 165
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (614 KB)

    The selection of a material suitable for use as a standard of dielectric properties at microwave frequencies is discussed, and tests are described which indicate that a glass and a glass ceramic are satisfactory for such standards. The probable accuracy of measurement of the real part of the dielectric constant is estimated at ± 0.3 per cent. Loss measurements are discussed. A correction is devel... View full abstract»

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  • The Proton Magnetic Resonance Oscillator, a Radio Frequency Source of High Spectral Purity

    Publication Year: 1962, Page(s):166 - 170
    Cited by:  Papers (1)
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    Some basic properties of a proton maser making use of the dynamic Overhauser effect for population inversion and enhancement are reviewed. The long proton spin relaxation times of liquid samples, in the order of seconds, facilitate the production of self-sustained continuous oscillation with high spectral purity. Theoretically the proton maser oscillator should have a spectral purity of some parts... View full abstract»

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  • The Measurement of Voltage by the Use of the Star Effect

    Publication Year: 1962, Page(s):171 - 176
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1328 KB)

    The theory of the Stark effect is reviewed with regard to its possible application of measuring voltages. It is pointed out that the effect can be used only to measure relative voltage and that the accuracy is likely to be limited by the accuracy with which the electrode separation can be determined. Therefore, the most sophisticated types of molecular frequency standards may not be required. The ... View full abstract»

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  • The Atomic Hydrogen Maser

    Publication Year: 1962, Page(s):177 - 182
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3087 KB)

    The atomic hydrogen maser is described. In this device hydrogen atoms in the upper hyperfine state are focused onto the entrance aperture of a Teflon coated quartz bulb in which the atoms are stored for about a second. This bulb is surrounded by a cylindrical radiofrequency cavity; When the cavity is tuned to the hyperfine frequency of atomic hydrogen, maser radiation is produced. Due to the large... View full abstract»

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  • Design and Performance of an Atomic Hydrogen Maser

    Publication Year: 1962, Page(s):183 - 187
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2816 KB)

    The design and construction of a relatively compact device for use as a frequency standard is discussed. Hydrogen scavenging is done by titanium sorption pumps having a continuous operating lifetime of one year. The magnetic and thermal shielding of the cavity is described, and frequency errors due to various effects are discussed. Preliminary data of measurements of relative stability between two... View full abstract»

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  • Hydrogen Cyanide Molecular Beam-Type Maser

    Publication Year: 1962, Page(s):187 - 190
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1749 KB)

    A hydrogen cyanide molecular beam-type maser has been successfully operated as an oscillator. The maser oscillates at two lines of a hyperfine triplet at 88.633 and 88.631 kMc. The maser uses an interferometer-type confocal resonant cavity. Many molecular beams eject from two circular beam sources radially towards the center of the circle where the cavity is located. The focusers, which separate m... View full abstract»

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Aims & Scope

This Transactions ceased publication in 1962. The current retitled publication is IEEE Transactions on Instrumentation and Measurement.

Full Aims & Scope