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锁定放大器

基于模拟锁定放大器和微处理器设计检测系统,可以实现微伏级直流电压信号的测量吗?还是直接用测量放大器放大,经调理电路采集到微处理器,利用数字锁定算法,混沌算法等一些其他算法来实现微伏级直流电压信号的测量?求大神给一些指导或者建议。。静候佳音