Electric flash device with printed coil transformer
US4082984A · kind A · utility
41Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 1976 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | May 5, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/1476
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention relates to an improved small-sized electric flash device wherein transformers of its DC-DC converter circuit for producing a high voltage comprises printed coil or coils thereby efficiently reducing their volume and sufficiently flattering their shape, so that, together with miniaturized circuit parts and printed circuit substrate, highly integrated, hence compact photographic flash device is obtainable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.