Biasing and fast degaussing circuit for magnetic materials

Patent · 04 October 1983

OSTI ID:6920696

Dress, Jr, W B; McNeilly, D R

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 dc current and alternately apply a selectively damped ac 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.

• DOE Contract Number: AC05-84OR21400
• Assignee: Dept of Energy
• Patent Number(s): None
• Application Number: ON: DE84011281
• OSTI ID: 6920696
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
DEMAGNETIZATION
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETOSTRICTION
MATERIALS
PHYSICAL PROPERTIES
TRANSDUCERS