EXAMPLE 12.1 Calculate the input power, output power, and efficiency of the amplifier circuit in Fig. 12.5 for an input voltage that results in a base current of 10 mA peak. Vcc = 20 V (mA) Voc 20 V - 1000 Re 200 900 Rc = 202 de load line 700 1 k2 C 600- 20 500 Ice B = 25 Operating point 400 300 10 200 100 -0 mA 10 15 20 25 Va (V) Va= Vee

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EXAMPLE 12.1 Calculate the input power, output power, and efficiency of the amplifier
circuit in Fig. 12.5 for an input voltage that results in a base current of 10 mA peak.
Vcc = 20 V
Alc (mA)
Vec 20 V
Ic=
40
1000
Rc 202
900
800
30
Ic
Rc = 20 2
700
de load line
RB
1 kQ
C;
70
600
20
Ise
500
Ice
400
Operating point
B = 25
300
10
200
100
I =0 mA
II
5
10
15
20
25
VCE (V)
VCE = Voc
Transcribed Image Text:EXAMPLE 12.1 Calculate the input power, output power, and efficiency of the amplifier circuit in Fig. 12.5 for an input voltage that results in a base current of 10 mA peak. Vcc = 20 V Alc (mA) Vec 20 V Ic= 40 1000 Rc 202 900 800 30 Ic Rc = 20 2 700 de load line RB 1 kQ C; 70 600 20 Ise 500 Ice 400 Operating point B = 25 300 10 200 100 I =0 mA II 5 10 15 20 25 VCE (V) VCE = Voc
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