(a)
The quiescent values
(a)
Answer to Problem 6.12TYU
The values are
Explanation of Solution
Given:
Given circuit:
Given Data:
Calculation:
Considering the BJT (Bipolar Junction Transistor) as single node, then, by Kirchhoff's current law, the quiescent emitter current
In CE mode:
The quiescent collector current
Here,
From equations (1) and (2),
(Reducing the ac source
Using equation (3),
From equation (3),
Using equation (4),
Applying Kirchhoff’s voltage law around the collector-emitter loop as,
From equation (2),
Using the equation (4),
(b)
The small-signal voltage gain and small-signal current gain
(b)
Answer to Problem 6.12TYU
The values of small signal voltage and small signal current gain are:
Explanation of Solution
Given:
Given circuit:
Given Data:
Calculation:
Small-signal analysis of given circuit:
[Reducing the dc source to zero and shorting all capacitors]
Determining the Diffusion resistance
Using equation (6),
Let
The input resistance
Using equations (7) and
Let
Using the equation (9),
Finding the Small signal voltage gain
Using equations (7) and
Finding the Small signal current gain
Using equation (9),
(c)
The small-signal input resistance
(c)
Answer to Problem 6.12TYU
The values of small-signal input resistance
Explanation of Solution
Given:
Given circuit:
Given Data:
Calculation:
Small-signal analysis of given circuit:
[Reducing the dc source to zero and shorting all capacitors]
Determining the Diffusion resistance
Using the equation (6),
Let
The input resistance
Using the equations (7) and
Determining the input resistance
From the equation (9), we get
The output resistance
Using the equation (7),
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Chapter 6 Solutions
Microelectronics: Circuit Analysis and Design
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