Magnetic type pickup cartridge block shaped pole piece construct

Details Magnetic type pickup cartridge block shaped pole piece construct Magnetic type pickup cartridge block shaped pole piece construct

1975-12-15

1979-02-20

Cardillo, Jr., Raymond F.

Undertaking

17910041M, 274 37, H04R 1112

Patent

active

041408861

ABSTRACT:
A magnetic type stereophonic pickup cartridge wherein four block-shaped pole pieces which are simple in construction and design and made of ferrite are assembled into a pole piece assembly. The eddy-current loss may be minimized, and the magnetic circuits of the right and left channels may be made completely symmetrical with the same length of the magnetic path, whereby the high sensitivity and flat frequency response characteristic may be ensured over the whole audible range.

REFERENCES:
patent: 3067295 (1962-12-01), Stanton
patent: 3383474 (1968-05-01), Kriebel et al.
patent: 3546399 (1970-12-01), Stanton
patent: 3881073 (1975-04-01), Grado

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