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...http://www.google.com.au/patents/US20060091824?utm_source=gb-gplus-sharePatent US20060091824 - Programmable waveform for lamp ballast
