Document Type and Number:
Japanese Patent JPS57153400
Kind Code:
U
Abstract:
An electromagnetic transducer in which one end of a coil terminal is connected with a step portion of a magnetic core body made of soft magnetic material such as pure iron and the other end of which is connected with a step portion of a supporting frame made of metal on the same plane by spot welding. An insulation between the supporting frame and the magnetic core body is made by interposing an insulator therebetween or by coating the surface of the magnetic core body with a resin film by evaporation. By treating the coil terminals on the same plane, the expensive substrate for making an electrical connection is not needed and the assembly cost is extremely reduced.
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Application Number:
JP3977381U
Publication Date:
September 27, 1982
Filing Date:
March 20, 1981
Export Citation:
International Classes:
G10K9/13; H04R11/00; H04R13/00; G10K9/18; (IPC1-7): G10K9/13; H04R13/00