Question

With the help of block diagram, Explain the operation of Electronic Ballast?

Answer 1

... The electronic ballast improves the performance of the lamp by operating at a higher frequency above the 50Hz determined by the mains supply. This eliminates lamp flickering because the gas in the tube does not have time to de-ionize between current cycles which also leads to lower power consumption and longer tube life (Vitanza et al., 1999). Fig. 2 depicts a block diagram of electronic ballast. The first block contains the protection, filtering and current peak limiting components. Block 2 is the full diode bridge rectifier to convert the ac line into a dc stagewhile Block 3 is the smoothing capacitor which provides the dc link voltage of the resonant inverter for the tube in ...