FLUORESCENT LAMP DEDICATED ELECTRONIC STABILIZER OF A FREE WATTAGE TYPE

摘要

PURPOSE: An electronic stabilizer is provided to reduce a switching loss by improving a current waveform of a resonant load. CONSTITUTION: The electronic stabilizer for a fluorescent lamp comprises: a lamp current,voltage detecting part (70) for detecting lamp current and voltage applied to a fluorescent lamp; a microprocessor control part (80) for recognizing a sort of a lamp by use of the detected current and voltage of the fluorescent lamp to a target voltage according to the recognized lamp, wherein the control part (80) compares the target voltage and a control DC voltage as an output of a voltage converting part to generate an error voltage signal and provides the error voltage signal to the voltage converting part (30). A PWM switching signal of the voltage converting part is adjusted in connection with an output of the control part (80) so as to be varied an output, and a closed loop is formed so that a control DC voltage suitable for the mounted lamp is followed by feeding by an outputted control DC voltage.