Electronic flash charging circuit
US5023470A · kind A · utility
9Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Apr 18, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic flash charging circuit for use with a camera having a power source common to a microcomputer that controls a plurality of camera functions and to an electronic flash. The charging circuit has a booster circuit for boosting a charging voltage with which a main capacitor of the electronic flash is charged and a controller that causes the booster circuit to operate intermittently, thereby intermittently charging the main capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.