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In this paper a simple method to design and improve the performance of high frequency self-oscillating electronic ballasts is presented. The proposed method is based on the describing function method and allows minimizing the parasitic elements effects presented above 200 kHz by considering the gate-source parasitic capacitance of power Mosfets and the switching delay times. Its main advantage is...
In present paper the analysis and design procedure of a high frequency self oscillating electronic ballast with constant lamp current control is presented. The self-oscillating electronic ballasts have two important drawbacks, first, the lamp current varies according to the AC input voltage, causing undesired effects in the lamp brightness; and second, the design method lacks of precision at the very...
In order to determine the stability of electronic ballasts, it is necessary to use a small-signal model. Various techniques has been proposed to obtain a small signal model; these techniques are complex and require multiple measurements. In this paper, a simple methodology to obtain small-signal model using only a simple test is presented. The parameter of the model are obtained through step response...
In this paper a consideration to design and improve the performance of high frequency self-oscillating electronic ballasts is presented. The proposed method is based on the describing function method and allows minimizing the parasitic elements effects presented above 200 kHz by considering the gate-source parasitic capacitance of power Mosfets and the switching delay times. Its main advantage is...
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