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Title: Biasing and fast degaussing circuit for magnetic materials

Abstract

A dual-function circuit is provided which may be used to both magnetically bias and alternately, quickly degauss a magnetic device. The circuit may be magnetically coupled or directly connected electrically to a magnetic device, such as a magnetostrictive transducer, to magnetically bias the device by applying a d.c. current and alternately apply a selectively damped a.c. current to the device to degauss the device. The circuit is of particular value in many systems which use magnetostrictive transducers for ultrasonic transmission in different propagation modes over very short time periods.

Inventors:
 [1];  [2]
  1. (Lenoir City, TN)
  2. (Maryville, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
865161
Patent Number(s):
4471403
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
biasing; fast; degaussing; circuit; magnetic; materials; dual-function; provided; magnetically; bias; alternately; quickly; degauss; device; coupled; directly; connected; electrically; magnetostrictive; transducer; applying; current; apply; selectively; damped; particular; value; systems; transducers; ultrasonic; transmission; propagation; modes; time; periods; magnetic materials; propagation mode; time period; magnetic material; magnetically coupled; directly connected; time periods; connected electrically; particular value; ultrasonic transmission; magnetostrictive transducers; magnetically bias; magnetostrictive transducer; magnetic device; /361/

Citation Formats

Dress, Jr., William B., and McNeilly, David R. Biasing and fast degaussing circuit for magnetic materials. United States: N. p., 1984. Web.
Dress, Jr., William B., & McNeilly, David R. Biasing and fast degaussing circuit for magnetic materials. United States.
Dress, Jr., William B., and McNeilly, David R. Sun . "Biasing and fast degaussing circuit for magnetic materials". United States. https://www.osti.gov/servlets/purl/865161.
@article{osti_865161,
title = {Biasing and fast degaussing circuit for magnetic materials},
author = {Dress, Jr., William B. and McNeilly, David R.},
abstractNote = {A dual-function circuit is provided which may be used to both magnetically bias and alternately, quickly degauss a magnetic device. The circuit may be magnetically coupled or directly connected electrically to a magnetic device, such as a magnetostrictive transducer, to magnetically bias the device by applying a d.c. current and alternately apply a selectively damped a.c. current to the device to degauss the device. The circuit is of particular value in many systems which use magnetostrictive transducers for ultrasonic transmission in different propagation modes over very short time periods.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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