Dimming control and characteristics of high-frequency operated metal halide lamps

X. Cao1, W. Yan1, S.Y. Hui1, H. Chung1
1Department of Electronic Engineering, City University of Hong Kong, Hong Kong, China

Tóm tắt

Dimming control and characteristics of high-frequency operated metal-halide (MH) lamps are described. Lamp performance based on two ballast topologies is compared. The dimming range and stability control of the MH lamps are addressed. Dimming range from 100% to about 30% has been achieved. It is found that the combination of ballast topology and dimming method can affect the dimming performance.

Từ khóa

#High intensity discharge lamps #Fluorescent lamps #Electronic ballasts #Resonance #Voltage control #RLC circuits #Circuit topology #Electric variables control #Switching frequency #Frequency control

Tài liệu tham khảo

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