Development of the electronic ballast for high frequency use-fluorescent lamps

1992 ◽  
Vol 76 (Appendix) ◽  
pp. 16-16 ◽  
Author(s):  
Keiji Takahashi ◽  
Kazutoshi Mita ◽  
Keiichi Shimizu
Keyword(s):  
High Frequency ◽  
Electronic Ballast ◽  
Fluorescent Lamps

Investigation and Improvement of Self-Oscillating Electronic Ballast for Local Fluorescent Emergency Light

2012 ◽  
Vol 614-615 ◽  
pp. 1539-1546
Author(s):  
Muhamad Fairus Hamid ◽  
Norazlan Hashim ◽  
Ahmad Farid Abidin
Keyword(s):  
High Frequency ◽  
Harmonic Distortion ◽  
Experimental Results ◽  
Total Harmonic Distortion ◽  
Switching Frequency ◽  
Switching Device ◽  
Electronic Ballast ◽  
Rectifier Circuit ◽  
Fluorescent Lamps

This paper presents an analysis and improvement of self-oscillation electronic ballast for local emergency light. The improvement circuit has been presented by replacing the original BJTs with MOSFETs as a switching device. Also, 555-timer has been used to drive the MOSFETs instead of the ballast feedback in the original circuit. This electronic ballast start and regulate fluorescent lamps by converting a DC supply to high ignition AC voltage by a rectifier circuit with switching frequency in the range of 20 kHz -1MHz. Operation at high frequency has two advantages; an improved efficiency and elimination of flickering in the lamps. The simulation has been done by using PSIM Simulink software and its results have been compared with experimental results. The results shows that by using MOSFETs as a switching device, the Total Harmonic Distortion (THD) has been reduced and the brightness of lamp tube has been increased greatly.

Multi-rating Electronic Ballast for Fluorescent Lamps based on Operating Frequency Determination

2011 ◽  
Vol 131 (10) ◽  
pp. 1184-1192
Author(s):  
Piyasawat Navaratana Na Ayudhya ◽  
Sumate Naetiladdanon ◽  
Anawach Sangswang
Keyword(s):  
Operating Frequency ◽  
Electronic Ballast ◽  
Frequency Determination ◽  
Fluorescent Lamps

Simulation And Development Of Electronic Ballast for High Pressure Discharge Lamps

2021 ◽  
pp. 86-92
Author(s):  
Vladimir G. Kulikov ◽  
Albert A. Ashryatov
Keyword(s):  
High Pressure ◽  
High Frequency ◽  
Acoustic Resonance ◽  
High Frequency Current ◽  
Electronic Ballast ◽  
Advantages And Disadvantages ◽  
Test Operation ◽  
Pressure Discharge ◽  
Frequency Current ◽  
High Pressure Discharge

The advantages and disadvantages of using electromagnetic ballasts for power supply of high pressuredischarge lamps (HPDL) are considered. The advantages of using electronic ballasts for supplying HPDL are shown. The analysis is fulfilled of the operation of the HPDL when powered by a high-frequency current, in particular, high-pressure sodium lamps (HPSL). It is indicated that when high-pressure discharge lamps are supplied with a high-frequency current, acoustic resonance may appear. The basic requirements to be met by electronic ballasts for HPSL have been determined. The topology of construction of electronic ballasts for supplying HPDL with a capacity of up to 1 kW has been selected. It has been established that half-bridge converters with inductive ballast and active power factor corrector (PFC) allow maintaining a stable power on the lamp while changing its parameters and efficiency. Mathematical modelling of the electronic ballast based on a half-bridge converter and an ignition device for the sodium discharge lamps DNaT type has been carried out. According to the proposed topology, the electronic ballast was developed for a DNaT 600 lamp powered from the 380 V network. Test operation of the lamps confirmed the reliability of the proposed electronic ballast topology.

Electrodeless fluorescent lamps model operated at high frequency

2011 ◽  
Author(s):  
N. B. Chagas ◽  
M. F. da Silva ◽  
M. E. Schlittler ◽  
J. Fraytag ◽  
R. N. do Prado ◽  
...  
Keyword(s):  
High Frequency ◽  
Fluorescent Lamps
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