Electro-acostic transducers

Details Electro-acostic transducers Electro-acostic transducers

1991-12-03

1993-12-07

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367185, 367174, 367175, 181110, H04R 2300

Patent

active

052688798

ABSTRACT:
A flexural transducer includes a hollow tube that is magnetically driven by a coil/magnet assembly. A magnetic field is provided by passing a current through the coil. The filed passes through an air gap between the coil and the magnet to attract and repel the magnet during alternating portions of the current's cycle. The magnetic transducer driver mechanism permits high drive capability, high temperature operation and provides lower frequency operation than conventional ceramic drivers.

REFERENCES:
patent: 3225326 (1965-12-01), Massa
patent: 3308423 (1967-03-01), Massa
patent: 4208736 (1980-06-01), Babikyan
patent: 4517514 (1985-05-01), Howell
patent: 4651044 (1987-03-01), Kompanek
patent: 5126979 (1992-06-01), Rowe, Jr. et al.

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