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Proceedings of the Institute of Radio Engineers

Issue 7 • Date July 1933

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  • [Front cover]

    Publication Year: 1933, Page(s): c1
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  • Institute of Radio Engineers - Forthcoming Meetings

    Publication Year: 1933, Page(s): c2
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  • Contents

    Publication Year: 1933, Page(s): i
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  • General Information

    Publication Year: 1933, Page(s): ii
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  • Institute sections

    Publication Year: 1933, Page(s): iii
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  • Geographical Location of Members Elected June 7, 1933

    Publication Year: 1933, Page(s): iv
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  • Applications for Membership

    Publication Year: 1933, Page(s): v
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  • Officers and Board of Directors, 1933

    Publication Year: 1933, Page(s): vi
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  • E.R. Shute, Director, 1933

    Publication Year: 1933, Page(s): 886
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  • Institute news and radio notes

    Publication Year: 1933, Page(s):887 - 908
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  • A Theory of Available Output and Optimum Operating Conditions for Triode Valves

    Publication Year: 1933, Page(s):909 - 929
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2112 KB)

    The output characteristics of triode and pentode valves have been investigated in the past by many workers, using either the static method of plotting a whole family of curves, or the dynamic method of measurement with a harmonic analyzer: these have not, however, led to many simplifying generalizations, and are cumbersome and difficult methods if they are to be applied to each individual valve. I... View full abstract»

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  • Diode Detection Analysis

    Publication Year: 1933, Page(s):930 - 943
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1472 KB)

    This paper gives the current and output relations for the linear and square-law diode detector in terms of the detection efficiency and the detector and load resistances. The square-law case is shown to yield results similar to the linear for large input potentials and reasonable values of load. Employing the rectification-current-input-voltage characteristic, the graphical method is used to show ... View full abstract»

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  • Application of Transformer Coupled Modulators

    Publication Year: 1933, Page(s):944 - 957
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4192 KB)

    A brief résumé of Heising's modulator theory is presented together with a discussion of the class B operation of tubes in a push-pull audio-frequency circuit. Several cases of commercial applications of class B audio amplifiers are mentioned. Several general problems involved in the use of a class B audio amplifier are discussed with the conclusion that such an amplifier will produce mor... View full abstract»

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  • The Interdependence of Frequency Variation and Harmonic Content, and the Problem of Constant-Frequency Oscillators

    Publication Year: 1933, Page(s):958 - 981
    Cited by:  Papers (50)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1568 KB)

    The investigations of the frequency variations in oscillating systems with negative nonlinear resistance were based until now on the fundamental differential equation of the simple oscillatory circuit. This method, although very exact, is not always sufficiently simple and even not always possible, especially if it concerns more complicated schemes. The symbolic calculus, although very simple in u... View full abstract»

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  • A Simplified Frequency Dividing Circuit

    Publication Year: 1933, Page(s):982 - 983
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    A circuit is described in which a type 57, three-grid tube functions as two triodes in two separate oscillator circuits. One of the circuits is a crystal oscillator, and the other is a self-excited circuit which is controlled by the crystal so that it oscillates at a subharmonic of the crystal frequency. View full abstract»

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  • An Analysis of Power Detection

    Publication Year: 1933, Page(s):984 - 989
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    The reasons for overloading of detectors as output devices is discussed. It is shown that in grid circuit rectification replacing the grid leak with a high impedance choke extends the overload point considerably. Using a 247 type pentode 800 milliwatts are obtained at the output circuit with seven per cent maximum distortion. View full abstract»

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  • Modes of Vibration of Piezo-Electric Crystals

    Publication Year: 1933, Page(s):990 - 995
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    (a) A crystal is made to oscillate by subjecting it to the action of an air wave produced at a considerable distance from the crystal by a jet of air escaping from a small tube. The piezo-electric charge developed on the surface of the crystal as a result of the oscillation is mapped out by means of a tuned amplifier, and the vibration is analyzed into a fundamental and many overtones. For crystal... View full abstract»

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  • Propagation of Waves of 150 to 2000 Kilocycles per Second (2000 to 150 Meters) at Distances between 50 and 2000 Kilometers

    Publication Year: 1933, Page(s):996 - 1002
    Cited by:  Papers (1)
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    First Page of the Article
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  • A Method of Calculation of Field Strengths in High-Frequency Radio Transmission

    Publication Year: 1933, Page(s):1003 - 1028
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2616 KB)

    The theory on the transmission of high-frequency radio waves developed by one of the authors in a previous paper is applied to practical problems, and a systematic method of calculating the field strengths of high-frequency waves is established. The property of the ionization chart is explained and the method of construction of the chart is given. Practical examples of calculations are shown with ... View full abstract»

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  • A Note on Nonlinearity in Transducers Used in Communication

    Publication Year: 1933, Page(s):1029 - 1038
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    The characteristic of a nonlinear transducer can usually be expanded in a power series, when it is not simply a single term raised to some power. For those cases where the characteristic may be so expressed, a general law or equation is derived for the characteristic of a compensating transducer, that is, a transducer which in combination with the first transducer will produce over-all linearity. ... View full abstract»

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  • Tables for the Calculation of the Mutual Inductance of Any Two Coaxial Single-Layer Coils

    Publication Year: 1933, Page(s):1039 - 1049
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    Absolute formulas for the calculation of the mutual inductance of coaxial solenoids, although they are required for work of the great precision necessary in absolute measurements, are not convenient for routine calculations. Series formulas, although simpler, are limited in the range of their convergence, thus requiring the choice of the proper formula for any given problem. The tables and formula... View full abstract»

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  • Some General Resonance Relations and a Discussion of Thevenin's Theorem

    Publication Year: 1933, Page(s):1050 - 1054
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    It is shown that the maximum possible current which can be obtained through an impedance joining two points of a linear network is in general greater than the short-circuit current between those points; the maximum possible voltage is in general greater than the open-circuit voltage; the ratio of open-circuit voltage to short-circuit current is equal to the ratio of the maximum possible voltage to... View full abstract»

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  • Book reviews

    Publication Year: 1933, Page(s):1055 - 1056
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  • Bookelts, catalogs, and pamphlets received

    Publication Year: 1933, Page(s): 1057
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  • Radio abstracts and references

    Publication Year: 1933, Page(s):1058 - 1063
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Aims & Scope

This Periodical ceased production in 1938. The current retitled publication is Proceedings of the IEEE.

Full Aims & Scope