Inductive load driving device and driving method
US6209513A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1998 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Dec 31, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/1816
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An inductive load driving device in which the rise of load current at an initial stage of driving can be executed at high speed includes a plurality of step-up circuits (21, 31), for alternately applying a high voltage to the same inductive load within a predetermined period of time, to thereby allow each load current to rise at a high speed; a holding current output circuit (43), for applying a predetermined voltage to the same inductive load after the load current has risen, to thereby hold the load current at a predetermined value; a plurality of switching means (46, 47), adapted to be switched in such a manner that the respective outputs of the plurality of step-up circuits (21, 31) and the holding current output circuit (43) can be alternately connected to the same inductive load; and a control logic circuit (44), for switching the plurality of switching means (46, 47) in a predetermined sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.