Moving-coil type pickup cartridge

Details Moving-coil type pickup cartridge Moving-coil type pickup cartridge

1982-09-30

1984-12-11

Faber, Alan

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Mechanical modification or sensing of storage medium

369139, 369170, H04R 916

Patent

active

044882840

ABSTRACT:
In a moving-coil type pickup cartridge, a vibrating system including an armature wound with a coil is disposed at an open end area of a magnet with a damper being interposed between the armature and the magnet, and the armature is placed directly under the influence of magnetic flux produced between the one and other ends of the magnet for generating a voltage without using any yoke.

REFERENCES:
patent: 3991284 (1976-11-01), Brown
patent: 3992017 (1976-11-01), Mori
patent: 4124783 (1978-11-01), Nemoto
patent: 4138122 (1979-02-01), Nakatsuka

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