Flyback as LED driver
US6304464A · kind A · utility
119Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2000 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Jul 6, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a circuit arrangement for operating a semiconductor light source, comprising PA1 input terminals for connecting a supply voltage, PA1 input filter means, PA1 a converter provided with a switching element having a control circuit, and provided with inductive means, and PA1 output terminals for connecting the semiconductor light source. The switching element is periodically driven into conduction for a period t.sub.on. According to the invention, the converter is formed by a flyback converter, and the inductive means are formed by a transformer, and the control circuit controls the t.sub.on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.