| 摘要 |
This invention provides for a self-regulating electronic ballast system (10) which includes a power source (12) for actuating at least one gas discharge tube (66). The self-regulating electronic ballast system (10) includes a filter circuit (11) connected to the power source (12) for maintaining a substantially smooth direct current voltage signal as well as for suppressing harmonic frequencies generated by the electronic ballast system (10). Induction circuitry (15) is coupled to the filter circuit (11) and includes a tapped primary winding (42) for generating a voltage across the gas discharge tube (66) responsive to a regulated current. A switching network (13) which is feedback coupled to the induction circuitry (15) establishes the regulated current and the switching network (13) includes a regulation control circuit (17) for maintaining the power output of the gas discharge tube (66) at a predetermined and substantially constant value.
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