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  • Other Sources  (760)
  • ELECTRONICS AND ELECTRICAL ENGINEERING  (760)
  • 1975-1979  (760)
  • 1
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    InP and GaAs characterization with variable stoichiometry obtained by molecular spray (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Both InP and GaAs surfaces were studied in parallel. A molecular spray technique was used to obtain two semiconductor surfaces with different superficial compositions. The structures of these surfaces were examined by electron diffraction. Electron energy loss was measured spectroscopically in order to determine surface electrical characteristics. The results are used to support conclusions relative to the role of surface composition in establishing a Schottky barrier effect in semiconductor devices.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-75748 , LCR-2270-DK
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Partial discharges in the transformers due to induced voltages (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The supplement furnishes a theoretical proof containing the experimentally determined advantage for the connection of capacitance C sub 0 between the insulated frame and ground according to the arrangement presented in the article.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-75256
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Calculation of electrostatic fields in periodic structures of complex shape (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A universal algorithm is presented for calculating electrostatic fields in an infinite periodic structure consisting of electrodes of arbitrary shape which are located in mirror-symmetrical manner along the axis of electron-beam propagation. The method is based on the theory of R-functions, and the differential operators which are derived on the basis of the functions. Numerical results are presented and the accuracy of the results is examined.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-75462
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Coupling of electromagnetic waves and space charge waves in type O traveling wave tubes (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: H. Derfler observed that a parameter defined by Pierce's perturbation method does not have the same physical significance as an analogous parameter described by a differently derived equation of W. Kleen. A modification of Pierce's method is proposed, which yields an equation of Derfler's type, and also allows quicker and easier calculation of a given traveling wave tube's parameters.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-75249 , Convegno Intern. delle Commun.; Oct 08, 1964 - Oct 12, 1964; Genoa
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    NASA TECHNICAL REPORTS
  • 5
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    Calculation of the magnetic field in the active zone of a hysteresis clutch (1977)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The initial distribution of magnetic induction in the armature stationary was calculated relative to the polar system of a hysteresis clutch. Using several assumptions, the problem is reduced to calculating the static magnetic field in the ferromagnetic plate with finite and continuous magnetic permeability placed in the air gap between two identical, parallel semiconductors with rack fixed relative to the tooth or slot position.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-75184
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Frequency method for determining the parameters of the electromagnetic brakes and slip-type couplings with solid magnetic circuits (1977)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The equivalent representation of brakes and coupling by lumped circuits is investigated. Analytical equations are derived for relating the indices of the transients to the parameters of the equivalent circuits for arbitrary rotor speed. A computer algorithm is given for the calculations.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-75192
    Format: application/pdf
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  • 7
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    Resistive anode image converter (1976)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The invention of an apparatus for imaging soft X-ray and ultraviolet electromagnetic radiation and charged particles was described. The apparatus includes a pair of microchannel electron multiplier plates connected in a cascaded chevron configuration which intercepts an incident beam of radiation or charged particles. Incident photons or charged particles strike the front surface of the chevron configuration causing emission of electrons. The electrons are accelerated by a voltage gradient and strike the inner side walls of the individual channels, causing emission of secondary electrons. Accelerated and multiplied secondary electrons impinge upon a resistive anode after they transverse the chevron configuration. A pulse position circuit converts the magnitude or transit time of the currents flowing from the point of impact of the electrons on the resistive anode to four contact electrodes mounted on their periphery of the resistive anode into the spatial coordinates of electron impact.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
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  • 8
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    Displays, memories, and signal processing: A compilation (1975)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Articles on electronics systems and techniques were presented. The first section is on displays and other electro-optical systems; the second section is devoted to signal processing. The third section presented several new memory devices for digital equipment, including articles on holographic memories. The latest patent information available is also given.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-SP-5972(06)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Space electronics technology summary (1976)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: An overview is given of current electronics R and D activities, potential future thrusts, and related NASA payoffs. Major increases in NASA mission return and significant concurrent reductions in mission cost appear possible through a focused, long range electronics technology program. The overview covers: guidance assessments, navigation and control, and sensing and data acquisition processing, storage, and transfer.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-X-73044
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    The present situation and forecasts of semiconductor elements performance within the microwave range, 1970-1985 (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: The present situation and possible developments over the period 1970-1985 for active semiconductor elements in the microwave range are outlined. After a short historical survey of FT techniques, the following are discussed: Generation, power amplification, amplification of small signals, frequency conversion, detection, electronic signal control and integrated microwave circuits.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-75453
    Format: application/pdf
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