Step motor circuit
US4278926A · kind A · utility
5Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 23, 1979 |
| Grant date | Jul 14, 1981 |
| Priority date | — |
| Expiry date | May 23, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P8/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit which effectively prevents voltage spikes caused by leakage inductance of the step motor windings without otherwise interfering with the overall operation of the step motor. The circuit incorporates two windings between a common point and the positive supply and two other windings between the common point and the negative supply. Voltage spikes are suppressed by diodes connecting directly from the ends of each of the windings to the supply terminals oriented to the opposite end of the respective windings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.