Voice coil with rectangular coil wire and foil leads

Details Voice coil with rectangular coil wire and foil leads Voice coil with rectangular coil wire and foil leads

1989-02-16

1991-06-25

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having electrostatic element

381194, H04R 2500

Patent

active

050274120

ABSTRACT:
A coil for a speaker in which a rectangular coil wire is formed by being cut from a sheet and then wound on the bobbin with its long direction disposed radially. Electrical connection is made to at least one end of the coil wire by ultrasonic welding to a conductive foil laid between the coil wire and the bobbin.

REFERENCES:
patent: 3586792 (1971-06-01), Gayford
patent: 3616529 (1971-11-01), Iding
patent: 3711659 (1973-01-01), Bresmeth
patent: 3963882 (1976-06-01), Lewis
patent: 4395598 (1983-07-01), Lesage
patent: 4479035 (1984-10-01), Phillippbar
patent: 4539442 (1985-09-01), Puls et al.
patent: 4568845 (1986-02-01), Uehara

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