Efficiency improvement of cold cathode fluorescent lamp

Synchronous dimming control for a cold- cathode fluorescent lamp driver - Electronics Letters

lation is created of randomly transformed copies of the original DFG. A fitness is allocated to each member of the population. This is determined by calculating the supply voltage and effective capacitance of the DFG. Area requirements are computed for the adders, delays and multipliers. The total required area is used to estimate the effective capacitance. The GA selects a member of the popula...

Interpretation of Digital Chest Radiographs: Comparison of Light Emitting Diode versus Cold Cathode Fluorescent Lamp Backlit Monitors

OBJECTIVE To compare the diagnostic performance of light emitting diode (LED) backlight monitors and cold cathode fluorescent lamp (CCFL) monitors for the interpretation of digital chest radiographs. MATERIALS AND METHODS We selected 130 chest radiographs from health screening patients. The soft copy image data were randomly sorted and displayed on a 3.5 M LED (2560 × 1440 pixels) monitor and...

Distributed circuit model for cold cathode fluorescent lamps in back-light unit of liquid crystal display

This paper presents a distributed circuit model of the cold cathode fluorescent lamps (CCFLs) in the backlight units (BLUs) of liquid crystal displays (LCDs). This model consists of nonlinear resistors and parasitic circuit elements, and it can be used to simulate CCFL BLUs for various input waveforms using standard circuit simulators. The nonlinear resistors were modeled after the measured DC ...

Fiat Lux: A Fluorescent Lamp Tkansceiver

The prevalence of electric discharge illumination has led us to consider ways to use discharge lamps for communication. This paper describes an optical transceiver system which transmits by modulating the lamp arc. The prototype power electronic lamp ballast uses a pulse frequency modulation scheme which ensures no perceptible flicker.

Fluorescent Lamp Modelling for Voltage Fluctuations