Basic halogen convertor IC
US7558081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2006 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Nov 15, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2981
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driving circuit for providing a control signal to a power semiconductor device for providing power to a filament lamp, said driving circuit comprising an oscillator for generating said control signal. The driving circuit may further comprise a soft start circuit which controls said oscillator so as to avoid excessive current in said lamp at start-up; a voltage compensation circuit which controls said oscillator so as to compensate for variations in load; a shutdown circuit for shutting down and automatically restarting said oscillator in response to a fault condition; an adaptive dead time circuit which controls said oscillator for providing cool running of said power semiconductor device; and/or a dimming circuit which controls said oscillator for driving said lamp. The driving circuit and its control circuitry may be implemented in an integrated circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.