Moving coil type pickup cartridge

Details Moving coil type pickup cartridge Moving coil type pickup cartridge

1983-08-22

1984-06-19

Faber, Alan

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Mechanical modification or sensing of storage medium

369170, H04R 916

Patent

active

044556390

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 ends of the magnet for generating a voltage without using any yoke. The magnet is a hollow cylinder having its interior free of any other magnet material.

REFERENCES:
patent: 4161631 (1979-07-01), Matsuda
patent: 4237349 (1980-12-01), Hansen

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