Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1990-08-13
1991-11-12
Steinberger, Brian S.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367191, H04R 102
Patent
active
050653725
ABSTRACT:
The sonar transducer is protected from explosion shock by a variable impedance device, such as a metal oxide varistor, connected in parallel with the energy conversion component. The varistor normally has a very high electrical impedance, but becomes conductive upon application of the very high voltage output of the energy conversion component as a result of a rapid increase in mechanical energy, such as would accompany an underwater explosion in the vicinity of the transducer, to limit both voltage and current to a safe level so that the transducer can thereafter operate within acceptable parameters.
REFERENCES:
patent: 3790927 (1974-02-01), Chwastyk
patent: 3968472 (1976-07-01), Taylor
Baldasarre Thomas
Delara Mario
Garwood Joe
Pagliarini, Jr. John
Poturnicki, Jr. Alfred
General Instrument Corp.
Steinberger Brian S.
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