• The Transactions of the Korean Institute of Electrical Engineers
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• v.38 no.6
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• pp.470-476
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• 1989

In order to develop a mathematical model which can predict the operating voltage and current of a discharge lamp, the properties and the physical phenomena of a low pressure gas discharge are investigated. Fluorescent lamp which uses a low pressure mercury-argon gas discharge is used in the model development. In a low pressure mercur-argon gas discharge, the continuity equation for each excited atom and electron, and the electron energy balance equation can predict the physical quantities of discharge. By coupling these equations and the circuit equation, the electrical characteristics of the discharge lamp can be predicted. To verify the validity of the suggested model, we calculated the voltage and current of a fluorescent lamp operating with inductor ballast for source frequency of 5KHz, 8KHz, 10KHz, and 13KHz. The results show good agreements in wave forms between the measured voltage and current, and the difference between the measured and calculated one is less than 5%.

• Proceedings of the KIEE Conference
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• 2004.11a
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• pp.306-309
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• 2004

Recently, the environmental problem has received considerable attention. so, many lamps have been developing for environmental requirement and energy efficiency. also, at glow discharge lamp researchers try to reduce energy spending that is power saving lamp. this kind requirement agree with strong points of electrodeless fluorescent lamp has received to now lighting sauce. At low pressure as mTorr I.C.P make high density plasma easily, is good to maintain discharge, has high ionization and does not have failing lighting and losing ability of electron radiation by oxidation and volatilization of electrodes, because this tape does not have electrodes. This point of I.C.P can use at electrodeless fluorescent lamp in this study ICP display elements and Ar, Ne, Kr are researched for optical characteristic. each gas is looked into optical characteristic, also mixed gases is experiment for optical characteristic.

• The Transactions of the Korean Institute of Electrical Engineers B
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• v.49 no.6
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• pp.441-449
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• 2000

Analysis, design and practical implementation of a single-stage electronic ballast for compact fluorecent lamps are presented in this paper. The proposed topology is based on a single-stage ballast which combines a boost converter and a half-bridge series resonant inverter. High power factor is achieved by using the boost semi-stage operating in discontinuous conduction mode, and inverter semi-stage operated above resonant frequency to provide zero voltage switching is employed to ballast the fluorescent lamp. Analytical and experimental results from the ballast system with 36W fluorescent lamps have demonstrated the feasibility of the proposed single-stage electronic ballast.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.56 no.9
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• pp.1584-1588
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• 2007

This paper proposed the voltage compulsion method that used chopper for light dimming control of fluorescent lamp. During the dimming period, electronic ballasts have the bad characteristics such as low power factor, high THD(Total Harmonic Distortion) and etc. The proposed dimmer improves power factor, THD of electronic ballast and has benefit such as low cost, simple build up.

• Journal of Korean Society for Quality Management
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• v.35 no.2
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• pp.27-36
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• 2007

A study to build a reliability model of electronic ballasts for the fluorescent lamp has been performed in this study. We selected the widely being used specification, MIL-HDBK-217 for the study. We briefly reviewed the basic concepts of the electronic ballast with the selected reliability specification. We then developed a reliability model for the ballast using MIL-HDBK-217 and predicted the reliability. We further provided some guides which should be considered in future model development.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2002.11a
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• pp.187-190
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• 2002

The Electrodeless lamp is intended as a high efficacy replacement for the incandescent reflector lamp in many applications. but Increasing awareness of electromagnetic compatibility(EMC) issues in lighting application, the problems of interference generation by electrodeless fluorescent lighting system have been highlighted. In this paper, Maxwell 2D finite element analysis program(Ansoft) is used to obtain electromagnetic properties associated with the coil and nearby structures. and also evaluated Flux B, H by changing the input current.

• Proceedings of the KIEE Conference
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• 2003.04a
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• pp.300-302
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• 2003

Fluorescent lamp converts electrical energy Into light energy. Generally we use both electronic ballast and glow starter method in the house. We developed 40W electronic starter and its characteristic is verified by experiments. The efficiency of ballast is improved by using the LC Parallel reasonance circuit at input stage and LC series reasonance circuit at out-put stage.

• Proceedings of the Korean Society for Quality Management Conference
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• 2006.11a
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• pp.327-332
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• 2006

A study to build a reliability model of electronic ballasts for the fluorescent lamp has been performed in this paper. We selected the widely being used specification, MIL-HDBK-217 for the study. We briefly reviewed the basic concepts of the electronic ballast with the selected reliability specification. We then developed a reliability model for the ballast using MIL-HDBK-217 and predicted the reliability.

• Proceedings of the Korean Society for Quality Management Conference
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• 2006.11a
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• pp.333-338
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• 2006

A simple but practical approach to evaluate the reliability of electronic ballasts for the low wattage fluorescent lamp has been presented in this study. We briefly reviewed the basic concepts of the electronic ballast. We then proposed a simple model and evaluated the reliability of the ballast using computer simulation.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2007.05a
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• pp.54-56
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• 2007

In recent, modeling methods for fluorescent lamp are developed well in both static and dynamic state. The models help reliable ballast to be developed in more fast time. This paper reviews the concept and method for well developed models, especially, circuit oriented models using PSpice.