EC6304 ELECTRONIC CIRCUITS I

UNIT 3

PART - B

1. With the help of small signal model, derive the input impedance, output

impedance and voltage gain of Common Gate JFET amplifier.

2. With the help of small signal model, derive the input impedance, output

impedance and voltage gain of Common Drain JFET amplifier.

3. With the help of small signal model, derive the input impedance, output

impedance and voltage gain of Common Source JFET amplifier.

4. Derive the input impedance, output impedance and voltage gain of JFET

amplifier in Common Source E-MOSFET .

5. Derive the input impedance, output impedance and voltage gain of JFET

amplifier in Common Drain E-MOSFET .

6. Write notes on BiCMOS amplifiers. Also explain any two applications of

BiCMOS amplifiers.

7. Give a comparison table of JFET and MOSFET amplifiers in terms of their

impedances and voltage gain,

8. Problems.

EC6304 ELECTRONIC CIRCUITS I

UNIT 3

PART A

1. Draw small signal model of JFETs.

2. Draw small signal model of MOSFETs.

3. Draw Common Source , Common Drain and Common Gate JFETs and

their respective small signal models.

4. What is Transconductance? Write its expression.

5. What are the various small signal parameters of FET?

6. Write the steps involved in the A.C analysis of MOSFET amplifier.

7. Draw Common Source E-MOSFET and its equivalant small signal

model.

8. What is A.C load line?

9. Draw MOSFET Source Follower circuits and its small signal model.

10. Draw BiCMOS Darlington pair configuration and its small signal

model.

11. Draw BiCMOS cascode configuration and mention its advantages.

12. Write two applications of BiCMOS amplifier.