July 1996 to July 1997

Fundamental Research and Development for Electronic Dimming Fluorescent Ballasts for Specialty Scene Lighting for Movie Sets

Tasks Involved:

• Fundamental research in fluorescent bulb ignition and dimming control.
• Both analog and digital signal processing control loops investigated.
• Goals: high power factor, low harmonic content, even lamp dimming from full bright to black.
• Multiple lamp dimming control with even re-starting from total black.