Method of manufacturing electroacoustic transducer

Metal working – Method of mechanical manufacture – Electrical device making

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Details

29606, 296091, H04R 3100

Patent

active

057378240

ABSTRACT:
A method of manufacturing an electroacoustic transducer which is not changed in its characteristic by heat caused by reflow soldering even if a coil is made of a general-purpose wire. The method of manufacturing the electroacoustic transducer including a magnetic driving portion composed of a core provided upright on a base and a coil wound around the core, comprises setting a height of the coil lower by a height, which corresponds to thermal expansion of the coil in reflow soldering, then subjecting the coil to heat processing to thermally expand the coil so that the height of the coil is set to an optimum height.

REFERENCES:
patent: 3516151 (1970-06-01), Schneider
patent: 4312118 (1982-01-01), Saik et al.

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