Sound emitter - Electrodynamic

From International Dictionary of Marine Aids to Navigation
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3-2-035

Electrodynamic (sound) emitter

A (sound) emitter which depends for its operation on the motion of a conductor, joined to a diaphragm and carrying a varying current, n a steady magnetic field.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)