This article introduction a analog Opto-Isolate circuit HCPL-7840,from analyze flash butt welding inverter model machine, figure out the effect of HCPL-7840 in sample-circuit,and get good result in precision sample,simple system structure,low price.%介绍了模拟光电隔离电路HCPL-7840,并结合闪光焊专用逆变电源样机设计实例,说明HCPL-7840在采样电路中的作用,实验证明,该电路采样精度高、系统结构简单、价格低.
展开▼