An impulsed-power supply for field emission lamp with PLL feedback mechanism

An impulsed-power supply used to eliminate arcing phenomenon and to maintain lamp luminance for field emission lamp is presented in this paper. To compact the system configuration and to reduce the system cost, the flyback topology is employed as the main circuit. Next, the phase-locked loop technique is embedded as a feedback mechanism in this study. With the proposed control mechanism, the peak value of the impulsed-lamp-current can be captured and regulated for stabilizing lamp luminance. Furthermore, the related design considerations are detailed. All the experimental results agree to the theoretical predictions.