Electric horn with twin driving electromagnets

Details Electric horn with twin driving electromagnets Electric horn with twin driving electromagnets

1979-04-26

1980-12-23

Pitts, Harold I.

Communications: electrical

Audible indication

Diaphragm

340401, G08B 310

Patent

active

042413346

ABSTRACT:
An electric horn is disclosed which has two electromagnets which are alternately and repeatedly energized so as to move a diaphragm to and fro in opposite directions. As a particular feature, a controller is disclosed which energizes these electromagnets at a frequency which is dependent upon ambient air temperature, so as to keep the wavelength of the emitted sound constant to provide a better match for the horn trumpet of the electric horn and cause better resonance therewith.

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