Control circuit for driving motor with reduced power consumption and disk unit having the control circuit
US5630008A · kind A · utility
6Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1994 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Dec 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A control circuit adapted to control a motor includes a first circuit part for generating an excitation current to be supplied to the motor and having a predetermined period that is dependent on a predetermined rotation period of the motor, and a second circuit part for superimposing on the excitation current pulses having a period that is small compared to the predetermined period of the excitation current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.