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:VOTED TO THE SC I E N T I FIC ^^^ AND ENGINEERING 

 IPECTS OF ELECTRICAL COMMUNICATION 



LUME XXXII NOVEMBER 1953 NUMBER6 



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Design Theory of Junction Transistors s^ ' a^" j. m. eablt \%1l 

 Transistor Oscillator for Use in Mtiltifffe'qu^py Pulsing Current 



Supply V j,^ BLOUNT 1313 



Ferrites in Microwave Applications j. h. rowen 1333 



Cold Cathode Tubes for Transmission of Audio Frequency Signals 



M. A. TOWNSEND AND W. A. DEPP 1371 



Balanced Polar Mercury Contact Relay 



J. T. L. BROWN AND C. E. POLLARD 1393 



Dynamic Measurements on Electromagnetic Devices m. a. logan 1413 



Selenium Rectifiers — Factors in Their Application j. gramels 1469 



Arcing of Electrical Contacts in Telephone Switching Circuits 



Part II — Characteristics of the Short Arc m. m. atalla 1493 



Abstracts of Bell System Papers Not Published in this Journal lo07 



Contributors to this Issue 1515 



COPYRIGHT 1953 AMERICAN TELEPHONE AND TELEGRAPH COMPANY 



