Device for controlling a motor for rotating a magnetic disc

Details Device for controlling a motor for rotating a magnetic disc Device for controlling a motor for rotating a magnetic disc

1986-02-26

1988-12-06

Ro, Bentsu

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318254, H02K 2908

Patent

active

047898127

ABSTRACT:
In the magnetic disc device having a Hall element to detect the index position of a magnetic disc as a magnet on the rotary shaft of an electric motor comes across the Hall element, a circuit for amplifying the output of the Hall element is fabricated in a common unit of a drive circuit for the motor.

REFERENCES:
patent: 3585399 (1971-06-01), Andrews
patent: 4070606 (1978-01-01), Morozumi
patent: 4074173 (1978-02-01), Janssen
patent: 4435673 (1984-03-01), Hagino
patent: 4486753 (1984-12-01), Saeki et al.
patent: 4500821 (1985-02-01), Bitting
patent: 4506218 (1985-03-01), Brown
patent: 4510422 (1985-04-01), Ogura
patent: 4550597 (1985-11-01), Drutchas
patent: 4645951 (1987-02-01), Uragami
patent: 4656370 (1987-04-01), Kanuma
"In IC Form, Hall-effect Devices Can Take on Many New Applications"; Oppenheimer, Michael; Electronics, 8/2/71, pp. 46-49.

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