Arrangement for operating an adjustment drive
US5747884A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Sep 30, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/0844
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arrangement for operating an adjustment drive (11) comprising a relay-controlled change-over facility (12) for the right-handed rotation/left-handed rotation of the positioning motor (10). A first semiconductor switch (23) is provided to supply current to a first relay winding (15) and a second semiconductor switch (25) to supply current to a second relay winding (16). A third semiconductor switch (26) is connected in series with the first relay winding (15) and in series with the second relay winding (16). By turning the third semiconductor switch (26) on and off, it is possible to enable or block a supply of current to the relay windings (15, 16). An alloying through of one of the first two semiconductor switches (23, 25) remains without consequences for the adjustment drive (11). An inadvertent adjustment process does not occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.