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American Institute of Electrical Engineers, Transactions of the

Volume XLV: 1926

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Displaying Results 1 - 25 of 130
  • Index of authors

    Publication Year: 1926 , Page(s): 1319 - 1322
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  • Subject index

    Publication Year: 1926 , Page(s): 1314 - 1318
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  • A.I.E.E. Representatives

    Publication Year: 1926 , Page(s): 1312 - 1313
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  • A.I.E.E. Committees

    Publication Year: 1926 , Page(s): 1310 - 1312
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  • Officers AIEE 1925-1926

    Publication Year: 1926 , Page(s): 1310
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  • Report of the Board of Directors for the Fiscal Year Ending April 30, 1926

    Publication Year: 1926 , Page(s): 1301 - 1309
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  • Can the Thermal Capacity of Electric Machines Be Made a Simple and Practical Element of Rating?

    Publication Year: 1926 , Page(s): 1290 - 1300
    Cited by:  Papers (3)
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  • Radio Broadcast Coverage of City Areas

    Publication Year: 1926 , Page(s): 1278 - 1289
    Cited by:  Papers (4)
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    l. Radio broadcasting involves a system of electrical distribution in which dependent relations exist between the transmitting station, the transmitting medium and the receiving station. 2. The attenuation and fading which attend the spreading out of broadcast waves are considered. The attenuation of overland transmission is shown to be, on the whole, very high and to vary over a wide range depend... View full abstract»

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  • A Shielded Bridge for Inductive Impedance Measurements at Speech and Carrier Frequencies

    Publication Year: 1926 , Page(s): 1266 - 1277
    Cited by:  Papers (2)
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    A shielded, a-c., inductance bridge adapted to the measurement of inductive impedances at frequencies up to 50,000 cycles is described. The bridge comprises a balancing unit and associated standards of inductance and resistance. The balancing unit has resistance ratio arms specially constructed to meet the requirements imnposed by the above frequency range. The reference standard makes use of indu... View full abstract»

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  • Frequency Measurements with the Cathode Ray Oscillograph

    Publication Year: 1926 , Page(s): 1256 - 1265
    Cited by:  Papers (2)
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    The cathode ray oscillograph frequency measurement circuit described differs from previous circuits in the use of by-pass condensers and plate leaks which permit connection of the oscillograph to a-c. circuits having large d-c. components and which permit the use of biasing controls for shifting the position of patterns on the screen. Reference oscillators are used in conjunction with the frequenc... View full abstract»

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  • The Induction Lamp, a New Source of Visible and Ultra-Violet Radiation

    Publication Year: 1926 , Page(s): 1242 - 1256
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    This paper deals with the induction lamp, or more generally speaking, the electrodeless electrical discharge. This lamp is a rich source of visible and ultra-violet radiation. The lamp has no electrodes, no conducting filaments and no conducting arc, as ordinarily understood. It operates on the principle of the electrodeless discharge which is produced in a partly exhausted vessel within a rapidly... View full abstract»

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  • The Lighting of Railway Classification Yards

    Publication Year: 1926 , Page(s): 1236 - 1241
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    This paper deals primarily with the illumination of modern large classification yards of the hump type in which the traffic is in one direction. Floodlighting is advocated as the most generally satisfactory system, and various arrangements, to meet the different conditions of yard layout, space available, etc., are described. View full abstract»

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  • The Remote Control of Multiple Street Lighting

    Publication Year: 1926 , Page(s): 1228 - 1235
    Cited by:  Papers (1)
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    This paper describes control systems for multiple street-lighting systems and deals particularly with the systems employed in New York City. The paper is introduced by a brief history of the development of street lighting since 1879 when the series system, the first street-lighting method, was established. View full abstract»

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  • A-C. Network Relay Characteristics

    Publication Year: 1926 , Page(s): 1212 - 1227
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    This paper discusses the required characteristics of relays for use with a low-voltage automatic network circuit breaker. The relay performs the two functions of tripping and reclosing the circuit breaker. The characteristic required for each function is discussed. The major part of the paper is given to a discussion of the reclosing function because of the danger of ``pumping'' caused by cable ch... View full abstract»

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  • Operating Requirements of the Automatic Network Relay

    Publication Year: 1926 , Page(s): 1203 - 1211
    Cited by:  Papers (1)
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    This paper describes, in an elementary manner, the various relations between distribution system characteristics and the design characteristics of the relays which are used to provide automatic control for the so-called automatic, low-voltage, a-c. network distribution system. In the first part of the paper the general principles of operation of the relays and the limits of magnitude of the variou... View full abstract»

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  • Evolution of the Automatic Network Relay

    Publication Year: 1926 , Page(s): 1195 - 1202
    Cited by:  Papers (2)
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    Low-vottage a-c. networks are coming into use as a means of providing a source of power having the dependability of the Edison d-c. network, and at the same time having the efficiency which can be obtained by supplying power from high voltage feeders with transformers located near the point of utilization. As in the case of d-c. networks, it is assumed that all trouble on the network itself will b... View full abstract»

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  • Recent Progress in Distribution Practise of the Brooklyn Edison Company, Inc.

    Publication Year: 1926 , Page(s): 1187 - 1194
    Cited by:  Papers (2)
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    Changes in the transmission and distribution system of the Brooklyn Edison Company during the past four years are briefly described and mention is made of the effect of these changes on the system's efficiency. In 1927 a low-voltage, a-c. network will be installed and this will be extended to care for the load growth until it becomes the principal supply system for low-tension energy in Brooklyn. ... View full abstract»

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  • Variable-Voltage Equipment for Electric Power Shovels

    Publication Year: 1926 , Page(s): 1181 - 1186
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  • Controlling Insulation Difficulties in the Vicinity of Great Salt Lake

    Publication Year: 1926 , Page(s): 1176 - 1180
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    The difficulties encountered in maintaining a sufficiently high degree of line insulation on long communication circuits in the vicinity of Great Salt Lake, Utah, are dealt with in this paper and a review of the study and solution of the problem of controlling the insulation is made. Leading up to this is a description of observations on about 40 mi. of line over a part of the Great Salt Lake Dese... View full abstract»

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  • Carrier-Current Communication on Submarine Cables Los Angeles-Catalina Island Telephone Circuits

    Publication Year: 1926 , Page(s): 1169 - 1175
    Cited by:  Papers (1)
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    Seven telephone channels and one telegraph channel on one single-conductor deep-sea cable have been made possible by the employment of carrier current on one of the two submarine cables across Catalina Channel. This is the only application of carrier telephony to deep-sea cables; the system is the shortest carrier system. (26 mi.) in commercial operation; it provides more separate carrier channels... View full abstract»

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  • Transmission Features of Transcontinental Telephony

    Publication Year: 1926 , Page(s): 1159 - 1168
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    In this paper, the various steps in the establishment of the existing network of transcontinental type circuits and the transmission design considerations are reviewed. The discussion covers the communication channels obtained from transcontinental type facilities and the bands of frequencies employed, and includes carrier-current systems, telephone repeaters and signaling systems. Mention is made... View full abstract»

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  • Engineering Education-Its History and Prospects

    Publication Year: 1926 , Page(s): 1147 - 1158
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    A brief history of the development of engineering education in the United States and a consideration of the usual type of curriculum in particular branches of engineering are followed by reasons for the development of a new type of curriculum and a discussion of its principal characteristics. The recently adopted curriculum leading to the degree of Bachelor of Arts in Engineering at Stanford Unive... View full abstract»

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  • Lightning A Study of Lightning Rods and Cages, With Special Reference to the Protection of Oil Tanks

    Publication Year: 1926 , Page(s): 1131 - 1146
    Cited by:  Papers (6)
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    Former papers have discussed the voltage and nature of lightning, lightning voltages on transmission lines, and means of protecting against them, the effect of lightning voltages on insulations, etc. This paper is a further report on this investigation which has been in progress a number of years. Special attention is given here to additional work on the chance of objects being struck; the area pr... View full abstract»

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  • Synchronizing Power in Synchronous Machines Under Steady and Transient Conditions

    Publication Year: 1926 , Page(s): 1116 - 1130
    Cited by:  Papers (6)
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    The accuracy of all calculations relating to the hunting of synchronous machines connected mechanically to reciprocating apparatus depends largely upon the correctness with which the value of the synchronizing power P8 may be determined. Thus, the calculation of flywheels necessary for the parallel operation of engine driven generators depends entirely on a correct value of P... View full abstract»

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  • Stability Characteristics of Alternators

    Publication Year: 1926 , Page(s): 1108 - 1115
    Cited by:  Papers (6)
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    During the past few years, stability characteristics of systems using long lines have been discussed at considerable length, but not so much attention has been given to the characteristics of the load. This paper shows that power limits may be reached with very short lines and certain classes of load. The characteristics of several classes of load, such as motors of various kinds with constant sha... View full abstract»

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