Electronic flash device
US6584286B2 · kind B2 · utility
3Cited by
2References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2001 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Jun 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/325
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides an electronic flash device, and in particular, an electronic flash device including forward and flyback type booster circuits. The two booster circuits are appropriately switched depending on the charged state of a capacitor of the electronic flash device or the operative state of the camera, thereby achieving proper charging time and charging efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.