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This paper presents the analysis and design of a self-oscillating electronic ballast with universal input voltage range (100–240 VRMS) and power factor correction to supply a T8 32 W fluorescent lamp. The power factor correction stage consists of a DC-DC converter operating in discontinuous conduction mode. The lamp is supplied by a half-bridge resonant inverter and a self-oscillating command circuit...
The use of the electrodeless fluorescent lamps has been increasing, because of their features such as lifetime and lumen efficiency, when compared to conventional fluorescent and high pressure sodium lamps. The single-stage high-power-factor electronic ballast for electrodeless fluorescent lamp with dimming feature is presented on this paper. It is obtained by integrating a SEPIC converter with a...
This paper deals with the high pressure lamps fed by SEPIC converter implemented with bidirectional switches with the lamp operation frequency of the main supply so as to prevent the occurrence of destructive acoustic resonance and high efficiency, unitary power factor and low cost. It approached the passive elements design in the circuit, the transfer function and the control equation with its control...
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