DR. JAMES WILLIAM ELLIS, D.O.
Marriage and Family Therapists at Riverfront Dr, North Little Rock, AR
License number
Arkansas 19936
Category
Osteopathic Medicine
Type
Family Medicine
License number
Arkansas E-4654
Category
Osteopathic Medicine
Type
Family Medicine
Address
Address
2
75 Riverfront Dr APT 401, North Little Rock, AR 72114
136 Dusty Ln, Powell, TN 37849
136 Dusty Ln, Powell, TN 37849
Phone
(865) 414-4138
(865) 945-4015 (Fax)
(865) 945-4015 (Fax)
Professional information
Nonferromagnetic Linear Variable Differential Transformer
US Patent:
4030085, Jun 14, 1977
Filed:
Jul 20, 1976
Appl. No.:
5/707000
Inventors:
James F. Ellis - Powell TN
Peter L. Walstrom - Oak Ridge TN
Peter L. Walstrom - Oak Ridge TN
Assignee:
The United States of America as represented by the United States Energy
Research and Development Administration - Washington DC
Research and Development Administration - Washington DC
International Classification:
G08C 1908
US Classification:
340199
Abstract:
A nonferromagnetic linear variable differential transformer for accurately measuring mechanical displacements in the presence of high magnetic fields is provided. The device utilizes a movable primary coil inside a fixed secondary coil that consists of two series-opposed windings. Operation is such that the secondary output voltage is maintained in phase (depending on polarity) with the primary voltage. The transducer is well-suited to long cable runs and is useful for measuring small displacements in the presence of high or alternating magnetic fields.