Horn speaker with reduced magnetic flux leakage

Details Horn speaker with reduced magnetic flux leakage Horn speaker with reduced magnetic flux leakage

1983-06-27

1985-01-08

Rubinson, Gene Z.

179119R, H01F 700

Patent

active

044928270

ABSTRACT:
By adding a secondary magnetic piece with a partially open magnetic circuit to the front surface of a yoke connected to a primary magnetic piece, the magnetic flux leakage from the main magnetic piece is reduced on one hand and the magnetic flux extending across a magnetic gap is intensified through formation of a favorable magnetic field. This horn speaker is particularly useful in a ship where a horn speaker as an alarm is often required to be placed near magnetically sensitive equipment such as a compass.

REFERENCES:
patent: 2895092 (1959-07-01), Cluwen
patent: 4465906 (1984-08-01), Adolph
G. Hecht, "Low Stray-Field Speaker . . . " Funkschau, vol. 50, No. 6, Mar. 10, 1978.

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