Página 185 - Coordinación de Servicios de Información

Electrónica Il
El valor comercial de RE, es de 560 n:
VE, = RE/E, = 0.56 kQ . 3.226 mA = 1.8 V
1 í = 10 lB, = 10 . 0.0266 mA = 0.266 mA
(VE, + 0.7) V (1.8 + 0.7) V .
0.26 mA 0.266 mA = 9.6 kQ (comemal10 kQ)
(20 - 1.8) V
63.6 kQ (comercial 56 kQ)
11· 0.026mA
RB, = R í 11 R í = 56 kQ 1110 = 8.48 kQ
~2'26mV 120'26mV
h¡e, lE, 3.226 mA = 967 Q
Ra = Re¡ 11 R B, = 6.8 kn 118,48= 3.77 kQ
Ganancia de voltaje total (Av,)
A = 120 3.3113.3 ( 120 .4)( 1.21110.9 )(...!...)
v, ( ) 3.77+2 1.21110.9+2 1.2
Av, = 4411 .59 = 20 . log 4631.3 = 73.3 bB
Ganancia de corriente total (A;,)
A¡, = 20 . log 1680 = 64.5 dB
Ganancia de potencia total (A p ,) •
Ap = Av A¡ = 4631.3 . 1680 = 7.7 . 1(J6 , "
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