Temperature-based control of inductor demagnetization
US11309152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2017 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Dec 9, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F13/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated circuit for demagnetizing an inductive load includes a first switch to control current supplied by a voltage supply to the inductive load. A Zener diode includes an anode connected to a control terminal of the first switch and a cathode connected to the voltage supply. A second switch includes a control terminal and first and second terminals. A temperature sensing circuit is configured to sense a temperature of the first switch and to generate a sensed temperature. A comparing circuit includes inputs that receive a reference temperature and the sensed temperature and an output connected to the control terminal of the second switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.