Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1987-06-24
1990-02-13
Steinberger, Brian S.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
310 26, H04R 1500
Patent
active
049012932
ABSTRACT:
A flextensional transducer driven by magnetically biased rare earth rods 31. The rods 31 are arranged in stacks with rare earth magnets 34 mounted on each end of each stack for providing the bias field. The rods 31 are slotted to reduce eddy currents and surrounded by a slotted drive coil 32 with a slot 32a in the coil bobbin. The ends of the flextensional shell associated with the shell major axis have a full radius curvature which stiffens the shell ends so that the axial bias and drive forces will not break the rare earth magnets 34 in flexure.
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Marietta Martin
Steinberger Brian S.
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