Assume that a 600Ω µV voltage source is driving the amplifier in Figure 6–52. Determine the overall...

Question

Assume that a 600Ω µV voltage source is driving the amplifier in Figure 6–52. Determine the overall voltage gain by taking into account the attenuation in the base circuit, and find the total output voltage (ac and dc). What is the phase relationship of the collector signal voltage to the base signal voltage?

Robert · Accepted Answer

Solution:-
As per the given, Draw the DC equivalent circuit as show in the fig.1
The Theremins equivalent resistance Rth is equal to parallel combination of R1 andR2 
 
 
3 3
1 2
3 3
1 2
6
3
2
1 2
3
3 3
(47 10 )(12 10 )
47 10 12 10
564 10
9.55932
59 10
min .
( )
12 10 (18)
3.6610
47 10 12 10
(
th
TH cc
TH BE
E
TH
E
R R
R
R R
k
Deter etheThevenins equivatentVoltage
R
V V
R R
v
Calculate the DC emitter current
V V
I
R
R

 
 
   

  




 
  



3
3
3
9.55932 10
3.6610 0.7 /1 10 ( )
75
)
2.

Assume that a 600Ω µV voltage source is driving the amplifier in Figure 6–52. Determine the overall voltage gain by taking into account the attenuation in the base circuit, and find the total output...

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