开关整流推挽变换电子镇流器

An Electronic Ballast Formed by Using Switch to Integrate the Rectifier with a Push-Pull Converter

介绍一种新的荧光灯电子镇流器 .它运用单个开关将整流器和推挽变换器结合在一起 ,向荧光灯提供高频电源的同时 ,使输入电流与电网电压同波形同频率同相位 ,具有功率因数高和电路简单的优点 .该电路利用电子开关和反向变换器使输入电流连续工作 ,保证电源电流的正弦性和同相位 .同时 ,推挽变换器能够向荧光灯提供高频电源 ,启动时自动升压 ,正常工作时自动限流 。

A new electronic ballast for the use of fluorescent lamp is presented. The ballast is formed by ingeniously using a single switch to integrate the rectifier with a push pull converter. It provides fluorescent lamp with power source of high frequency; and makes input current and voltage of electric network similar in waveform and frequency and phase. It is high in power factor and simple in circuit. Its circuit makes input current to work continuously by applying electronic switch and flyback converter; and ensures the current of power source to be sinusoidal and similar in phase, Its push pull converter is able to provide fluorescent lamp with power source of high frequency; and to raise the voltage at starting and to limit the current during normal work automatically. It realizes the high power factor of circuit and high efficiency of fluorescent lamp.