DocumentCode
958880
Title
A high speed drive coil for a large capacity bubble memory
Author
Saito, N. ; Toyooka, T. ; Yoshizawa, S. ; Sugita, Y.
Author_Institution
Central Researgh Laboratory, Hitachi, Ltd., Kokubunji, Tokyo, Japan
Volume
12
Issue
6
fYear
1976
fDate
11/1/1976 12:00:00 AM
Firstpage
639
Lastpage
641
Abstract
We calculated an eddy current loss in a wire as a function of an applied ac field. Estimating the field at an actual coil wire and summing the losses in all points of wires we obtained a formula representing a coil loss. Based on the calculated results, we designed coils which drive thirty-two 64 kb chips. The observed loss of the coils was in good accord with the calculated one. This 2 Mb module was operated at 40 Oe rotation field of 500 kHz with the coil loss of 8 W.
Keywords
Electromagnets; Magnetic bubble memories; Artificial intelligence; Boundary conditions; Cable insulation; Coils; Current density; Inductance; Magnetic separation; Shape; Virtual manufacturing; Wire;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1976.1059101
Filename
1059101
Link To Document