摘要
针对铁路大功率LED信号灯高可靠性点灯要求,提出一种基于LM2576开关稳压集成电路和AD8217高分辨率分流放大器的高精度恒流电源设计方案,能够有效保证LED显示的稳定性。
Aimed at the high reliability requirement of high-power LED signal,a design of high precision constant-current power source which is based on switching power supply with integration block LM2576 and High resolution current shunt amplifier chip AD8217 is proposed,which can ensure the stability of LED indication.
出处
《铁道通信信号》
2017年第9期19-20,共2页
Railway Signalling & Communication
基金
基金项目:上海铁大电信科技股份有限公司.点式LED信号机.[2016]Z001
