Optical: systems and elements – Optical aperture or tube – or transparent closure
Reexamination Certificate
2007-01-30
2007-01-30
Chen, Shih-Chao (Department: 2821)
Optical: systems and elements
Optical aperture or tube, or transparent closure
C345S032000
Reexamination Certificate
active
10977303
ABSTRACT:
A programmable waveform ballast has a power supply and a waveform generator. The power supply provides, from a power source, a variable power to a discharge lamp. The waveform generator is coupled to the power supply and is programmable to produce a plurality of waveforms. The waveform generator controls the power supply to apply the variable power to the discharge lamp in accordance with a programmed waveform.
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Cole James R
Howard Peter Guy
Pate Michael A.
A Minh Deu
Chen Shih-Chao
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