Inverter with dimming function
US7323832B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2007 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Jan 9, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for an inverter for driving a fluorescent lamp includes a first triangular wave signal generator for use in analog dimming control, and a second triangular wave signal generator for use in burst dimming. The first triangular wave signal generator oscillates at a frequency higher than that of the second triangular wave signal generator. A semiconductor substrate on which the control circuit is integrated is partitioned into at least two areas by a fixed potential wiring. A circuit block including the first triangular wave signal generator is placed in one of the areas, and a circuit block including the second triangular wave signal generator and the comparator for burst dimming is placed in the other area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.