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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,
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