High efficiency controller of a gas-filled light emitting tube
US7088055B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 3, 2003 |
| Grant date | Aug 8, 2006 |
| Priority date | — |
| Expiry date | Dec 3, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a high-efficiency controller of a gas-filled light producing tube; the controller can produce signals in a form of outputs of high-frequency sine wave to soft-start a gas-filled light producing tube according to the principle of modulation and oscillation of pulse (P.W.M.) so that the gas-filled tube produces light, and that service light of the gas-filled tube can be lengthened. If abnormal conditions happen, e.g. people's touching the gas-filled tube, and the tube breaking, the controller will make the transformer stop working immediately, preventing sparks from being produced to hurt people, making the gas-filled light producing tube safe to use.12 external switch circuit
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.