Nonferromagnetic linear variable differential transformer

Patent · Tue Jun 14 00:00:00 EDT 1977

OSTI ID:862860

Ellis, James F ^[1]; Walstrom, Peter L ^[2]

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1. Powell, TN
2. Oak Ridge, TN

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 4030085
• OSTI ID: 862860
• Country of Publication: United States
• Language: English

Related Subjects

nonferromagnetic
linear
variable
differential
transformer
accurately
measuring
mechanical
displacements
presence
magnetic
fields
provided
device
utilizes
movable
primary
coil
inside
fixed
secondary
consists
series-opposed
windings
operation
output
voltage
maintained
phase
depending
polarity
transducer
well-suited
cable
runs
useful
alternating
output voltage
device utilizes
magnetic field
magnetic fields
alternating magnetic
differential transformer
accurately measuring
variable differential
linear variable
secondary coil
mechanical displacement
nonferromagnetic linear
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