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1. (WO2010118626) ELECTRONIC BALLAST FOR A FLUORESCENT LAMP AND AN ENERGY-SAVING LAMP

Pub. No.:    WO/2010/118626    International Application No.:    PCT/CN2010/000318
Publication Date: Fri Oct 22 01:59:59 CEST 2010 International Filing Date: Tue Mar 16 00:59:59 CET 2010
IPC: H05B 41/295
Applicants: ZHANG, Yuqing
张玉清
Inventors: ZHANG, Yuqing
张玉清
Title: ELECTRONIC BALLAST FOR A FLUORESCENT LAMP AND AN ENERGY-SAVING LAMP
Abstract:
The present invention relates to an electronic ballast for a fluorescent lamp and an energy-saving lamp. A multi-function module MK circuit is added to the electronic ballast which is based on a half-bridge inverter circuit. The multi-function module MK circuit, which is connected between a positive node A and negative node B of a power supply of a rectifier filter circuit and an upper and a lower bridge of two power tubes, has functions of preventing the upper and lower bridge from being on at the same time, stating preheating, over current and short-circuit protection. Although the cost is increased, the electronic ballast can be a new generation half-bridge inverter circuit electronic ballast which has long use life, relatively low cost, sufficient output power and has the functions of electronic preheating, over current and short-circuit protection. The invention helps to promote and popularize split type energy-saving lamps, end the situation that previous fluorescent lamps and energy-saving lamps save energy without saving money, and further helps to reduce the emission of carbon dioxide and the environment pollution caused by mercury.