Practice Department Of Electronics And Electrical Communication Engineering (88.1.2)

Practice: Department of Electronics and Electrical Communication Engineering

Lesson 88.1.2Numerical examples on current mirror and its applications (Part-C)

Practise this section

9 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define a current mirror.
Show hintHide hint
Think about how it helps maintain current in amplifiers.
Question 2.
What is the typical value of β for a transistor?
Show hintHide hint
Consider what beta represents in transistor operation.
3Question 3.
What is the main function of a current mirror?
- To amplify voltage
- To replicate currents
- To reduce noise
Show hintHide hint
Think about the role of current in maintaining a stable circuit.
4Question 4.
True or False: The Early voltage is irrelevant in practical transistor applications.
- True
- False
Show hintHide hint
Consider the definition and its importance in calculations.
Question 5.
Design a current mirror circuit with specified β values of the transistors and calculate the expected collector currents. Consider the effects of beta mismatch.
Show hintHide hint
Use the relationships provided earlier regarding collector and base currents.
Question 6.
Considering a common emitter amplifier using matched transistors, derive the expressions for output resistance based on given collector currents and Early voltage.
Show hintHide hint
Reference previous examples that discussed calculating output resistances.

5 more questions in this section. Enroll free to practise them all.