Backlight apparatus capable of short prevention and voltage feedback compensation
US7893629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2008 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Jul 28, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention discloses a backlight apparatus. The backlight apparatus includes a power source, a lamp, a balance transformer, a detecting circuit, a judging module, and a controlling module. The balance transformer includes a primary winding electrically connected to the power source and a secondary winding corresponding to the primary winding and electrically connected to the lamp. The detecting circuit is used for detecting a current generated by the secondary winding and generating a first voltage according to the current. The judging module is used for judging whether the value of the first voltage is smaller than a default value. The controlling module is used for controlling the power source according to a judgment made by the judging module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.