Scheduled System Maintenance:
Some services will be unavailable Sunday, March 29th through Monday, March 30th. We apologize for the inconvenience.
By Topic

Electrical Engineering

Issue 8 • Date Aug. 1947

Filter Results

Displaying Results 1 - 25 of 50
  • [Front cover]

    Publication Year: 1947 , Page(s): c1
    Save to Project icon | Request Permissions | PDF file iconPDF (17757 KB)  
    Freely Available from IEEE
  • [Front inside cover]

    Publication Year: 1947 , Page(s): c2
    Save to Project icon | Request Permissions | PDF file iconPDF (10911 KB)  
    Freely Available from IEEE
  • Contents

    Publication Year: 1947 , Page(s): 1
    Save to Project icon | Request Permissions | PDF file iconPDF (365 KB)  
    Freely Available from IEEE
  • [Advertisement]

    Publication Year: 1947 , Page(s): 2A
    Save to Project icon | Request Permissions | PDF file iconPDF (9675 KB)  
    Freely Available from IEEE
  • Highlights

    Publication Year: 1947 , Page(s): 3A
    Save to Project icon | Request Permissions | PDF file iconPDF (675 KB)  
    Freely Available from IEEE
  • [Advertisement]

    Publication Year: 1947 , Page(s): 4A - 12A
    Save to Project icon | Request Permissions | PDF file iconPDF (59159 KB)  
    Freely Available from IEEE
  • John Bayfield Macneill: Lamme medalist for 1946: The Lamme medal

    Publication Year: 1947 , Page(s): 747 - 748
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1895 KB)  

    PRESENTATION of the Lamme Medal for 1946 to John Bayfield MacNeill (F '42) manager of the switchgear and control division of the Westinghouse Electric Corporation, was made June 11, 1947, during the AIEE summer general meeting at Montreal, Quebec, Canada. Mr. MacNeill was awarded the medal “for his foresight, leadership, and creative contribution in the development of switching equipment.” The award has been made each year since 1928 to an engineer “who has shown meritorious achievement in the development of electrical apparatus or machinery.” View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The medalist's career

    Publication Year: 1947 , Page(s): 748 - 750
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2159 KB)  

    THE GROWTH of almost every great industry rests upon the progressive development of one or more key auxiliaries, devices, or processes vital to its functioning. As an example, the railroads have the air brake and the block signal without which modern high-speed railway trains could not be operated. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The switching of large power

    Publication Year: 1947 , Page(s): 750 - 753
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (6018 KB)  

    THE GREAT GROWTH of power generation in the United States and Canada has imposed problems of control through switching operations that at times have seemed impractical, and the general progress in this phase of the industry seems to justify comment. With few exceptions our large systems, in contrast to continental European practice, are grounded, and line-to-ground faults become short circuits in which flow many times the normal power and which therefore must be removed instantly. As most high voltage lines are overhead and lightning over large areas of the United States is severe, the duty on switches and circuit breakers from such faults is frequently heavy. Moreover, as most line flashovers will clear themselves in a few cycles if the power flow is removed, we have resorted to fast reclosure, both single and polyphase, as well as to fast interruption, to maintain stable operation at high loads with a minimum number of transmission circuits and with heavy bus concentrations of generators. This is obvious to power engineers and is the basis for the necessity that American switchgear perform under heavy and frequent duty with absolute reliability. The improvement in this respect in recent years has contributed much to the continuity of electrical service and to its low cost, and is a tribute to the men who have worked, often under difficult conditions, with the abstruse phenomena involved. It is more than chance that five of the last six Lamme Medal recipients have been identified with important switchgear developments. In accepting the present award I wish to stress the broad co-operative effort in the industry on the part of many capable engineers, both in utilities and manufacturing, who have furthered this advance. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The defense of North America

    Publication Year: 1947 , Page(s): 754 - 757
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2775 KB)  

    THE FACT that we properly can use the inclusive term “defense of North America” is significant, for it symbolizes the very remarkable position which has come about in the development of friendly and close relations between the nations of the North American continent; the words themselves betoken the fact that today within North America there are no frontiers in the sense of separating boundaries between nations that have to be fortified and patrolled by armed forces on guard against some ever-present or potential risk of invasion or other military action. On the contrary, the boundaries between nations within the continent of North America are interlaced with open highways where great friendly peoples meet in free and peaceful intercourse for trade and commerce and to develop associations and enterprises which redound to their mutual advantage and benefit. View full abstract»

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

    Publication Year: 1947 , Page(s): 757
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (527 KB)  

    In 1944 two Russian physicists, D. Iwanenko and I. Pomeranchuk, pointed out that radiation should come from the electrons moving in circular orbits in a betatron. This effect, they said, would impose a limit on the simple betatron. At more than approximately 100 million volts, the electrons would radiate energy as fast as they received it unless proper compensation were made. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Nature and use of piezoelectricity

    Publication Year: 1947 , Page(s): 758 - 762
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3171 KB)  

    Piezoelectricity means “pressure electricity.” It refers to those electrical effects produced when certain crystals are compressed, and conversely, to the deformation of crystals in an electric field. Several hundred different crystals have been found to be piezoelectric, but the only ones that are of present practical importance are natural crystals of quartz and tourmaline, and artificial crystals of Rochelle salt and ammonium phosphate. Important uses of these crystals are described. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Metallic rectifiers for motor power supply

    Publication Year: 1947 , Page(s): 763 - 764
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1627 KB)  

    Metallic rectifier power packs have been in operation for about 18 months at the Buffalo, N. Y., plant of the Westinghouse Electric Corporation. The rectifier units fill the need for supplying d-c power for small d-c motors in scattered areas, and are claimed to have lower cost and higher efficiency than motor generator sets, with easier mounting and simplified maintenance. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modern ocean cable telegraphy

    Publication Year: 1947 , Page(s): 765 - 767
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1542 KB)  

    Transmission on long nonloaded submarine telegraph cables has been improved by application of efficient signal-shaping amplifiers, replacement of electromechanical receiving equipment, use of new artificial line networks and new methods of balancing, and increased sending voltages. With these improvements it became practicable to change from cable code recorder operation to printer operation and, at the same time, to obtain higher quality of transmission at increased speeds. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electrical standardization and AIEE

    Publication Year: 1947 , Page(s): 768 - 771
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1886 KB)  

    The complexity of the diagram of Standards committee procedures indicates that it is one of the busiest of AIEE committees. That it is one of the most far reaching in influence is apparent from this concise assessment of the magnitude of the committee's task in promoting uniform and sound engineering standards governing the applications of electricity. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Short-circuit standards for transformers

    Publication Year: 1947 , Page(s): 771 - 773
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1588 KB)  

    System faults impose a great variety of short circuits on the windings of 3-winding transformers. Unfortunately, the present American Standard (C57) on short circuits is inadequate and subject to misinterpretation, particularly in the case of line-to-ground faults on Y-connected windings of transformers provided with delta-connected stabilizing windings. View full abstract»

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

    Publication Year: 1947 , Page(s): 774 - 778
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (7114 KB)  

    Many metallurgical manufacturers in Canada have taken advantage of the tremendous hydroelectric developments there which provide an abundance of low-cost electric power. Fuel combustion heat is being replaced by electric heat for such processes as annealing and wire patenting, and more electric power is being used in induction heating for forging and hardening, regulation of smelting furnaces, and in electric arc furnaces. Electric heat has allowed short time cycles, automatic operation, and has provided uniform results consistently. View full abstract»

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

    Publication Year: 1947 , Page(s): 778
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (540 KB)  

    For years it has been common practice in the rubber industry to add carbon black to rubber in order to improve mechanical properties such as increasing the wear resistance and strength. The United States Rubber Company now is utilizing the properties of carbon as an electric conductor in making a rubber product designed to carry current View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An A-C vehicle generating system

    Publication Year: 1947 , Page(s): 779 - 780
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1815 KB)  

    Wide speed-range operation is essential for vehicular generating systems, and only d-c machines have been practical to date. An alternator-rectifier system with high output and efficiency comparable with the d-c system is presented. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Military communication equipment observed at winter tests

    Publication Year: 1947 , Page(s): 781 - 783
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2655 KB)  

    Task Force “Frost” operations during the months of January and February 1947 at Camp McCoy, Wis., were observed by representatives of several companies. Purpose of the task force was to service test items of equipment under heavy winter and simulated combat conditions. Observations and recommendations for improvement of the equipment tested are included. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Capacitance effect of conductor in magnetic field

    Publication Year: 1947 , Page(s): 784 - 786
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1231 KB)  

    The combination of a gaseous tube rectifier and a d-c motor recently has become quite popular, often with disastrous consequences for the gaseous tube. Behavior of a d-c motor is in many respects equivalent to that of a very large capacitor. An engineer aware of the severe conditions imposed on a gaseous rectifier feeding into a capacitor input filter, may connect a d-c motor to a gaseous rectifier, not realizing he may be imposing worse conditions than is the case with a capacitor. View full abstract»

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

    Publication Year: 1947 , Page(s): 786 - 792
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3429 KB)  

    This treatment of electrical hazards endeavors to rectify the condition of scanty, incomplete information or misinformation that is too common among a people experiencing greater and greater electrification of their home and industrial equipment. The behavior of electric currents and charges that makes for electrical hazards, what the accident statistics reveal, the physiological effects of electric shock and how it can be treated, all are included. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A-c power transmission economics

    Publication Year: 1947 , Page(s): 793 - 797
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (5079 KB)  

    Comparatively few writers have dealt with the economic problem in transmitting power long distances. In this analysis important possible variations in cost were studied and considered carefully in order to test the validity of the conclusions which were drawn. The effect of these variations tempered the conclusions which are presented here. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Institute activities: Engineering — Instrument of peace

    Publication Year: 1947 , Page(s): 798
    Save to Project icon | Request Permissions | PDF file iconPDF (1181 KB)  
    Freely Available from IEEE
  • The president's responsibilities

    Publication Year: 1947 , Page(s): 799
    Save to Project icon | Request Permissions | PDF file iconPDF (1186 KB)  
    Freely Available from IEEE

Aims & Scope

This Periodical ceased publication in 1963. The current retitled publication is IEEE Spectrum.

Full Aims & Scope