Janos Melis (MSEE) has been involved in
research and development of HID electronic
ballasts for over 17 years. He is the
founder and president of Ballastronic,
Inc.
a Research and Development company in
electronic ballast technologies. He has
written several papers, studies and
patents in electronic ballast subject.
Publications,
studies, and conference
records
Ballast
Curves for HPS Lamps Operating on High
Frequency, IES' 92.
Master-slave Half-bridge Inverter, APEC'
93.
A Power Controlled Current Source, Circuit
and Analysis, APEC' 94.
An Output Unit for Low Frequency Square
Wave Electronic Ballasts, SOUTHEASTCON'
94.
Energy Saving Factor and Compensation Time
Formula, A modified short version can be
read here.
Classification of Electronic Ballasts for
HPS lamps. 1998, published first time as a
part of the "HID
Ballast
Overview".
Design Considerations for HID Ballasts,
1998, published first as
"Design
Considerations".
Ballast Curves and Power Control,
Interactive design aid for electrical
engineers, (Software
version)
2002.
Transformer and Inductor Design for High
Frequency Switchmode Power Converters, Not
published.
SPR Diagrams for Low Frequency Square Wave
Electronic Ballasts: Effect of Frequency
Modulation, Study, 2006.
SPR Diagrams for Low Frequency Square Wave
Electronic Ballasts: Effect of the
Vertical Resolution, Study, 2006.
SPR Measurement Methods For Low Frequency
Square Wave Electronic ballasts, Study,
2006.
Local Spectrum Analysis, Study, 2007.
Electronic Ballasts for HPS Lamps: Theory
and Design, Dissertation work in
progress.
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