Title :
A simple dimmer using a MOSFET for AC driven lamp
Author :
Kim, Jong-Hyun ; Jung, Jee-Hoon ; Ryu, Myung-Hyo ; Baek, Ju-Won
Author_Institution :
KERI, Changwon, South Korea
Abstract :
This paper presents a simple dimmer using a MOSFET for AC driven lamp such as AC LED and incandescent lamp. The control method of the proposed dimmer is pulse width control (PWM) method. Compared with the conventional phase-controlled dimmer, the proposed PWM dimmer can produce sine wave and it does not cause harmonics problem. Furthermore, because the MOSFET is free from latching & holding current, the proposed dimmer using a MOSFET has wide dimming range and the proposed control method does not amplify the light flicker due to independence of the input voltage. Therefore, the proposed PWM dimmer can be used as the AC driven lamp´s dimmer instead of the conventional phase-controlled dimmer. The experimental result shows that the proposed PWM dimmer has good performances.
Keywords :
LED lamps; MOSFET; filament lamps; AC LED lamp; AC driven lamp; MOSFET; PWM dimmer; control method; incandescent lamp; pulse width control method; Harmonic analysis; LED lamps; MOSFET circuits; Power harmonic filters; Pulse width modulation; Thyristors; Voltage fluctuations;
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-61284-969-0
DOI :
10.1109/IECON.2011.6119608