Compact circuit for controlling a floppy disk driver

Details Compact circuit for controlling a floppy disk driver Compact circuit for controlling a floppy disk driver

1996-02-28

1997-08-26

Ro, Bentsu

Electricity: motive power systems

Open-loop stepping motor control systems

360 7813, 330307, G11B 1703, H03F 318, H02P 800

Patent

active

056613890

ABSTRACT:
In a floppy disk driver controlling circuit which is for use in controlling a floppy disk driver including a stepping motor (23) and which comprises a stepping motor driver (21) for producing a driving current to drive the stepping motor and a control section (22) for controlling the stepping motor driver, each of the control section and the stepping motor driver includes CMOS transistors as switching transistors. A combination of the control section and the stepping motor driver is formed as a single CMOS integrated circuit (25). The stepping motor driver produces the driving current between 80 mA and 250 mA, both inclusive, to drive the stepping motor when the stepping motor has a diameter which is substantially equal to 15 mm.

REFERENCES:
patent: 4786995 (1988-11-01), Stupeck et al.
patent: 5400190 (1995-03-01), Miura
patent: 5521768 (1996-05-01), Shrinkle et al.

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