Circuit arrangement for controlling a load
US6756752B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Oct 21, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/29
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for controlling the electric power to be supplied from a direct-current source to a load, particularly to a fan or heater in a motor vehicle. The circuit has a first field-effect transistor, to be connected in series with the load to be controlled, and a control circuit for controlling the field-effect transistor. The first field effect transistor has a second field-effect transistor connected in series therewith, and a resistor is connected in parallel with one of the field-effect transistors. The control circuit is adapted to control the two field-effect transistors in the sense of a fadeover between two final states in each of which one of the field-effect transistors is off and the other is on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.