摘要
介绍了一种基于PWM控制芯片UC3844的反激式开关电源的反馈回路改进设计,详细讨论了新型反馈电路的工作过程及设计方案,采用光耦PC817和电压基准TL431组成反馈网络。该电源性能优良,具有结构简单,稳压效果好,负载调整率高等优点,具有很高的生产应用价值。
A feedback circuit based on PWM controller UC3844 of flyback switching mode power supply is presented. This paper analyzes the operation course and design of a novel feedback circuit. This feedback circuit is made of optical coupler PC817 and TIA31. This power supply has good performance such as effortless circuit diagram, high voltage stability, good load adjustment rate and so on, and has better application value.
出处
《电子技术应用》
北大核心
2008年第6期74-77,共4页
Application of Electronic Technique
