Compact circuit for controlling a floppy disk driver
US5661389A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1996 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Feb 28, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.