| http://www.w3.org/ns/prov#value | - The fluorescent lamp is driven by an electronic ballast, for example a half-bridge resonant inverter, and the electronic ballast is switched at a constant frequency...http://www.google.com/patents/US6486615?utm_source=gb-gplus-sharePatent US6486615 - Dimming control of electronic ballastsAdvanced Patent SearchPublication numberUS6486615 B2Publication typeGrantApplication numberUS 09/170,512Publica
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