Magnetic stereophonic phonograph pickup

Details Magnetic stereophonic phonograph pickup Magnetic stereophonic phonograph pickup

1974-10-23

1977-05-24

Cardillo, Jr., Raymond F.

17910041M, 17910041Z, H04R 1112

Patent

active

RE0292320

ABSTRACT:
A magnetic stereophonic pickup having four coil carrying core members arranged symmetrically around the axis of an annular ceramic magnet against the inner pole and end face of which one end of said core members abut the opposite ends being magnetically interconnected. A magnetic armature connected to a stylus is so supported within and coaxial with the magnet that it can oscillate in any direction about a point adjacent the outer end thereof. The armature acts as a variable magnetic load converting stylus movements into variations of the magnetic potentials at the magnet abutting ends of the core members, said potential variations in turn causing flux variations in the coil carrying core members.

REFERENCES:
patent: 3294405 (1966-12-01), Pritchard
patent: 3469040 (1969-09-01), Shaper
patent: 3538266 (1970-11-01), Cho

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