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模拟试题及答案模拟试题9答案

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模拟试题及答案模拟试题9答案考生答题不得过此线 ··················密····························封·························线···························· 院系 专业       年级 班级  姓名 学号 ··················装····························订·························线······...

模拟试题及答案模拟试题9答案
考生答题不得过此线 ··················密····························封·························线···························· 院系 专业       年级 班级  姓名 学号 ··················装····························订·························线···························· ···················装·······················订·······················线····································· 院系 专业 年级 班级   姓名    学号 ···················密·······················封·······················线····································· 考生答题不得过此线 一、填空题(除6小题外,每空1分,共20分) 1.  反向击穿; 2.  甲类、甲乙类、乙类、甲乙类; 3.  零点漂移; 4.  (串联负反馈)从C到F;(电压负反馈)从A到E; 5.  差放输入级、压放中间级、互补输出级、偏置电路; 6.  (1)0.5; (2)5; (3)20; 二、简答题(每小题10分,共30分) 1.(1) (2) 2.(1) (2) (3)输出电压会失真。输入信号中有两个频率成分150Hz和50KHz,这两种信号的放大倍数均为10,所以幅度为2V的输入信号被放大后,将超过最大不失真输出幅度=14V而产生非线性失真。 3.   三、计算题(每题10分,共20分) 1.   2.(1) (2) (3) 四、综合题 (每题15分,共30分) 1. (1)  当UI>6V 或 UI<3V 时,UO=11.3V,LED亮; (2)    (3) 2. 取R4=20K,则Rf2=200K,Rf1=20K, R1=10K, R2=100K, R3=100k, 第 1 页 共 2 页 第 2 页 共 2 页 考生答题不得过此线 ··················密······························封························线··························· 院系 专业       年级 班级  姓名 学号 ··················装······························订························线··························· 第 3 页 共 1 页
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