Power supply and plasma display including the same
US8040072B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 2008 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Jul 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply including a transformer primary coil coupled to an input power source and a secondary coil coupled to an output terminal, a first switch coupled to the primary coil of the transformer, a duty cycle of the first switch controlling a voltage of the output terminal, first and second resistors coupled to the output terminal in series, a third resistor having a first terminal coupled to a node common to the output terminal and the first resistor, a second switch having a first terminal coupled to a second terminal of the third resistor and having a second terminal coupled to a node common to the first and second resistors, the second switch controlled based on an accumulated driving time, and a switching controller configured to receive a feedback voltage varying according to an on/off of the second switch, and configured to control the duty cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.