Rotary voice coil motor with a flat coil

Details Rotary voice coil motor with a flat coil Rotary voice coil motor with a flat coil

1991-06-26

1992-06-16

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Linear

369219, G11B 700, G11B 554, H02K 4102

Patent

active

051227029

ABSTRACT:
A rotary voice coil motor for positioning a recording head or the like. Fixed magnets are provided opposite a pivotable flat coil. The fixed magnets have magnetic members placed at positions corresponding to large magnetic flux on the coil. The magnetic members absorb some of the magnetic field flux so as to cause a more constant torque to be applied to the coil throughout its arcuate path.

REFERENCES:
patent: 4631431 (1986-12-01), Viskochil
patent: 4908816 (1990-03-01), Champagne et al.

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