Electronics and Communication Engineering - Analog Electronics - Discussion
Discussion Forum : Analog Electronics - Section 1 (Q.No. 40)
40.
The 'h' parameters of the circuit shown in the figure are hib = 25 Ω, hfb = 0.999 and hob = 10-6Ω The Voltage gain is
Answer: Option
Explanation:
Zi = 25 + 10-6 x 0.99 x 104 
25
.
Discussion:
6 comments Page 1 of 1.
Abhi said:
9 years ago
Can't understand How? Explain clearly.
Arun said:
9 years ago
Please explain the solution in right way.
Ajit dubey said:
9 years ago
For approx calculations of CE amplifier input impedance Ri = hib = 25 and c is shorted for ac analysis, for current gain Ai = Hfb = 0.99.
So put all this in Av = Ai * RL/his. Hope this helps.
So put all this in Av = Ai * RL/his. Hope this helps.
LIZA said:
8 years ago
How can we get the value of zL?
Subbu said:
8 years ago
zL is load resistance or effective resistance seen a/c the load hence zL=Rc=10k=10^4.
Priyanka58511 said:
4 years ago
zi=hi + hr X Ai X RL.
Here hr is not given therefore the value of Zi can not be found. This question can not be solved.
Here hr is not given therefore the value of Zi can not be found. This question can not be solved.
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