AC switch with zero off current for EL panel
US7843140B2 · kind B2 · utility
0Cited by
15References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2005 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | May 27, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply for driving an EL panel includes an inverter that produces a polarity reversing voltage at a pair of output terminals. A switching circuit coupled to the output terminals and to at least one EL lamp applies alternating current to the at least one EL lamp in the on state and blocks current from the EL lamp in the off state. The switching circuit includes a first bidirectional switch connecting a first terminal of the EL lamp to a first output terminal and a second bidirectional switch connecting a second terminal of the EL lamp to a second output terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.