22VcmVCC242
6 10解:R1 Rp 144
2P02P02 2
XC1 C1
R1144 14.4 QL10
11
pF 2216
2 fXC12 3.14 50 10 14.4
R2
R22
QL 1 1R1
200200
100 1 1144
16.95
XL1
L1
XL116.95
0.054 H 6
2 f2 3.14 50 10
2
1 RP增加一倍,放大器工作6 11解:于过压状态,Vcm变化不大,P0 Vcm/2RP 0.5P0;
2 2 RP减小一半,放大器工作于欠压状态,Icm变化不大,P0 IcmRP/2 2P0。
10 144 QLR1 R2200
1 1 2.57 2 QL 1 QLXL1 100 1 10 16.95 11
pF C2 1239
2 fXC22 3.14 50 106 2.57 XC2
6 12解: k
r
r1 r1
22
VCC VCE sat Vcm 12 0.5 6 13解:RP 66 2P02P02 1
2
111
57.4%
L1L211
1 1 22
QQk100 15 0.032Q1Q2 M12
设QL 10C1
则XC1
RP66
6.6 QL10
11
241 pF 2 fXC12 3.14 108 6.6
RL
R
1 Q R
2L
L
XC2
1
50
P
1 10 50 1
66
2
5.5
C2
11
290 pF 2 fXC22 3.14 108 5.5
QLRP RL 10 66 50
1 1 2 102 1 10 5.5 12.5 QL 1 QX LC2
XL1 L1
XL112.5 19.9 nH 8
2 f2 3.14 10