DocumentCode
1411010
Title
A telegraph testing machine
Author
Bramhall, F. B.
Author_Institution
Western Union Telegraph Co. New York
Volume
50
Issue
8
fYear
1931
Firstpage
668
Lastpage
670
Abstract
Telegraph line efficiencies and signal distortion measurements are only two of the many uses for this unique device. By means of an unusual electrochemical recorder, time intervals of one ten-thousandth of a second in the opening and closing of electrical circuits are graphically recorded.
Keywords
Coils; Distortion; Distortion measurement; Needles; Relays; Testing; Welding;
fLanguage
English
Journal_Title
Electrical Engineering
Publisher
ieee
ISSN
0095-9197
Type
jour
DOI
10.1109/EE.1931.6430359
Filename
6430359
Link To Document