Bgmi roic is a high performance roic with adaptive current gain control and background current suppression . it is very significant for surveying far object and high background applications 该读出电路具有自适应增益控制和背景电流抑制功能，是一种高性能的读出电路，对远距离探测目标和高背景应用都具有十分重要的意义。
2.
Introduction : this article expounds the four types of input harmonic current suppressions in connection with the four types of input harmonic current that may occur while a high power ups system is working and then makes a comparison between the four types of suppressions 引言：针对大功率ups在使用中可能出现的4种输入谐波电流的情况，针对每个情况阐述输入谐波电流抑制的四种方案，并做一比较。
