Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 30 (1923) > Annual Issue
Document Type
Research
Abstract
In a Coolidge tube, the electrons are focused upon the target by a metal tube surrounding the filament. As this tube projects more and more beyond the filament the electrons come to a smaller and smaller focal spot. The magnitude of the electronic current from the filament increases slightly as the voltage is increased, but it increases very rapidly as the filament is made hotter. As the filament is heated still hotter the electronic current does not increase toward infinity but attains a maximum value. This saturation value may be as low as 40 mili-amperes.
Publication Date
1923
Journal Title
Proceedings of the Iowa Academy of Science
Volume
30
Issue
1
First Page
80
Last Page
80
Copyright
©1923 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Zumstein, R. V.
(1923)
"Production of High Amperage in Low Voltage Coolidge Tube,"
Proceedings of the Iowa Academy of Science, 30(1), 80-80.
Available at:
https://scholarworks.uni.edu/pias/vol30/iss1/23