• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.21 no.7
• /
• pp.1-5
• /
• 2007

This paper presents the new detection method for the end of life on fluorescent lamps. At the end of lamp life, the lamp voltage and current asymmetrically increase and decrease more than normal state. If the ballast system does not have the protection function especially for T4 and T5 lamps, we may see the melting socket which is connected to the end of the lamp. To protect from this kind of abnormal status is the most important thing in the ballast system that has very old lamps.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 2008.10a
• /
• pp.7-11
• /
• 2008

The fluorescent lamp is one of a discharge lane that is used by electric discharge to transfer from electrical energy to light The fluorescent lamp needs a ballast stabilizer when turn it on because it has negative resistance. Characters of electric discharge and transformed characters of ballast stabilizer are connected closely. Therefore, bring out best design directive that consider economical efficiency and term of a application is very important for both characters matching. In this case, we will team to develop tester and functions for expression for recognizing the end of fluorescent lamp life to solve fire problem and losing efficiency of light when a fluorescent lamp goes the end of the expected its life span.