具有恒流保护功能的便携式开关电源

Portable switching power supply with constant current protection function

文章介绍了具有恒流保护功能的便携式开关电源的整体电路设计,分析了电路的工作原理,给出了关键性电路。在设计中采用了宏晶科技公司的单片机,实现了可以进行负载限流设定、输出电压可调整、可以显示的功能。由于采用锂电池储存电能,本电源可以充电和移动,同时体积小、造价低。

This paper introduces the whole circuit design of portable switching power supply with constant current protection function,analyzes the working principle of the circuit, and gives the key circuit. In the design, the microcontroller of Hongjing Science and Technology Company is used to realize the functions of load current limiting setting, output voltage adjustable and display. Because the lithium battery is used to store electric energy, the power supply can be charged and moved with small volume and low cost.