Motor drive circuit
US4942347A · kind A · utility
4Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1989 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Nov 16, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/186
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is disclosed a motor drive circuit, into which an output circuit for supplying a drive output to a motor is incorporated, having a temperature compensating circuit or an output current regulating circuit added to a transistor, interposed between a servo IC for generating a servo signal and the output circuit, for supplying the output circuit with a drive current corresponding to the control output. A dependency on the temperature is obviated by arbitrarily setting an operating point of the output current and compensating temperature characteristics, and the motor is thereby protected from an excessive current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.