a) Using resistor nearest preferred values (NPV), design a network as shown in Figure Q3a if Vcc = 25 V, Vc = 10 V, Ica = 3 mA and IaSATURATION) = 1.5lco. Determine the values of RB, Rc, and RE and state all assumptions made. Vcc Rc Rs Vo Vi o Co B = 100 RE Zo ZI Figure Q3a

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LE424
QUESTION 3
a) Using resistor nearest preferred values (NPV), design a network as shown in Figure
Q3a if Vcc = 25 V, Vc = 10 V, Ica = 3 mA and IcSATURATION) = 1.5lco. Determine the
values of RB, Rc, and RE and state all assumptions made.
Vcc
lo
Rc
RB
ovc
Vo
Co
Vio
B = 100
RE
Zo
Figure Q3a
Transcribed Image Text:LE424 QUESTION 3 a) Using resistor nearest preferred values (NPV), design a network as shown in Figure Q3a if Vcc = 25 V, Vc = 10 V, Ica = 3 mA and IcSATURATION) = 1.5lco. Determine the values of RB, Rc, and RE and state all assumptions made. Vcc lo Rc RB ovc Vo Co Vio B = 100 RE Zo Figure Q3a
b) Draw the small signal AC equivalent circuit for the network shown in Figure Q3b
considering r.= rce= 00 and determine the value of:
i)
le and VCE
le and re
ii)
ii)
the input impedance, Zi
iv)
the output impedance, Z.
v)
voltage gain, Av = VoV
vi)
the current gain, A l/li
25V
Rc=1K
R1=100K
Co
o Vo
V -
B=100
R2=22K
Zi
Figure Q3b
Transcribed Image Text:b) Draw the small signal AC equivalent circuit for the network shown in Figure Q3b considering r.= rce= 00 and determine the value of: i) le and VCE le and re ii) ii) the input impedance, Zi iv) the output impedance, Z. v) voltage gain, Av = VoV vi) the current gain, A l/li 25V Rc=1K R1=100K Co o Vo V - B=100 R2=22K Zi Figure Q3b
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