Control circuit for a stepping motor
US4626760A · kind A · utility
2Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1985 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | Mar 14, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C3/143
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The control circuit comprises means for measuring current flow in the motor winding including an auxiliary transistor and means to form periodically a current mirror from such auxiliary transistor and one of the transistors coupled to the winding for applying thereto energization pulses, i.e. motor drive pulses, catch-up pulses or check pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.