Plasma lamp with stable feedback amplification and method therefor
US7638951B2 · kind B2 · utility
330Cited by
55References
25Claims
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Key dates
| Filing date | Oct 27, 2006 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Mar 5, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plasma lamp with a positive-loop feedback topology, having a resonating waveguide body and at least one amplifier critically coupled to the body which is stable under all operating conditions both before a plasma is formed and after the plasma reaches steady state. An iterative method for configuring the lamp circuit includes determining the load trajectory of each amplifier under all operating conditions, and overlaying it on a polar-plot showing regions of stability, conditional stability, and instability. If the load trajectory passes through an unstable region, circuit alterations are made to avoid that region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.