Moving magnet transducer

Details Moving magnet transducer Moving magnet transducer

1975-05-23

1976-12-28

Stellar, George G.

H04R 1100

Patent

active

040003817

ABSTRACT:
A miniature acoustical transducer. The transducer includes a diaphragm, spring member and electromagnetic coils secured within a substantially cylindrical housing. The coils are arranged on opposite sides of the spring member. The spring member carries a permanent magnetic member and is connected to the diaphragm. Movement of the magnetic member relative to the electromagnetic coils varies the reluctance of the magnetic circuit defined by the coil and an associated core member.

REFERENCES:
patent: 1713210 (1929-05-01), Barton
patent: 1869665 (1932-08-01), Chann
patent: 2552800 (1951-05-01), Lybarger
patent: 2951190 (1960-08-01), Baermann
patent: 3061689 (1962-10-01), McCarrell et al.

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