T8형 LED 조명장치 구동을 위한 정전압 정전류 출력전원장치 개발에 대한 연구

The Development Study about Power Supply Unit for Output the Constant Voltage and Current to Operate T8 Type LED Fluorescent Lighting

This Study focused on the development of Power supply equipment to supply the stabilized electric power over load conditions change. In this paper, the circuit of proposed SMPS designed for purposed to output the high quality of constant voltage and current. The proposed circuit with LNK 409 keep up the 95% of power factor and efficiency in spite of the load change. To improvement the above weak point, the developed SMPS unit monitored the voltage and current over 2 nd side of transformer for purposed to supply constant voltage and current additionally. The Experimental tests was applied the LED lighting of 46W.