Electric motors

Details Electric motors Electric motors

1976-09-10

1978-06-20

Hohauser, Herman J.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318254, H02K 2900

Patent

active

040964191

ABSTRACT:
A motor arranged directly to drive a gramophone turntable which comprises a number of permanent magnet rotor pole pairs arranged on the circumference of a circle centered at the motor shaft, a number of air cored stator windings there being less stator windings than rotor pole pairs, and a commutator arrangement for controlling current through the windings whereby they react with the rotor poles to produce rotation of the turntable the current being controlled so that torque ripple is obviated.

REFERENCES:
patent: 3383574 (1968-05-01), Manteuffel
patent: 3912283 (1975-10-01), Hammond et al.

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