Power supply circuit for an electroluminescent lamp
US5712533A · kind A · utility
54Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 1995 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | May 18, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The power supply circuit for an electroluminescent lamp (7) comprises a transformer with two windings (4, 6). The primary winding (4) of the transformer is supplied cyclically by a battery via the intermediary of an "H" bridge. The use of an "H" bridge ensures that the current circulating in the primary winding (4) has no continuous component, which optimises the rates of transmission of electric energy from the primary (4) to the secondary of th transformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.