Driving circuit of stepping motor for floppy disk drive

Details Driving circuit of stepping motor for floppy disk drive Driving circuit of stepping motor for floppy disk drive

1986-03-20

1987-08-04

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02P 800

Patent

active

046848649

ABSTRACT:
A driving circuit of a stepping motor for a floppy disk drive which drives the stepping motor by feeding control signals supplied from a control circuit through drivers in order to feed a carriage, wherein the circuit includes an all zero power circuit which performs logical operation of the feeding control signals and the electricity saving signal therein and outputs all zero signals to the drivers at the electricity saving time in spite of the feeding control signals in supply so that the electric current is completely cut off to be stopped flowing to the drivers and the stepping motor and the power voltage loss can be firmly deleted. Accordingly, the device can be driven in low voltage and the total system can be designed in small sizes and in battery driving operation.

REFERENCES:
patent: 4107593 (1978-08-01), Anderson

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