Troxell Law Office, PLLC
Electronic ballast system for emergency lighting applications
An electronic ballast system with emergency lighting features is presented. Especially, the electronic ballast system is relative to a single-stage converter configuration. The electronic ballast system serves as a regular ballast, a regular/emergency ballast, a battery charger or discharger and a power failure detector, fulfilling emergency lighting features. The single-stage converter used in the ballast is an integration of a bi-directional flyback converter and two half-bridge series-resonant parallel-loaded inverters. Unlike conventional approaches, the rectified and filtered input voltage is directly added to a set of battery voltages in the proposed system, so as to reduce the fabrication cost by simplifying the circuit configuration and the number of active switching elements.
Fego Precision Industrial CO, Ltd.
H H
H02J H05B
inventional inventional
Yu-Kai Tsai-Fu Chin-Hsiung Yung-Chun
Chen Wu Chang Wu