Photoflash charging circuit with current and voltage monitor
US6289180A · kind A · utility
8Cited by
8References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1997 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Dec 8, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/05
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera that includes a battery, a photoflash circuit, and a charging circuit to provide energy from the battery to the photoflash circuit is provided. The camera further includes a voltage monitor coupled to the battery to switch off the battery from the charging circuit when a voltage on the battery falls below a predetermined voltage value. The camera may also include a current monitor, coupled to the battery, to switch off the battery from the charging circuit when a current generated through the battery exceeds a predetermined current value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.