Practice Loading Effects In Current To Voltage Conversions (23.7.2) - Linear models of Amplifiers (Part B)

Practice: Loading Effects in Current to Voltage Conversions

Lesson 23.7.2Linear models of Amplifiers (Part B)

Practise this section

9 questions

Flashcard drill
2 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.
What is a current amplifier?
Show hintHide hint
Think of the function it serves in electronics.
Question 2.
Explain the purpose of DC bias in a current amplifier.
Show hintHide hint
Consider what happens if a transistor is turned off.
3Question 3.
What is the unloaded current gain of a current amplifier?
- 1
- The ratio of output to input current
- Always greater than 1
Show hintHide hint
Think about what happens when no load is connected.
4Question 4.
True or False: Coupling capacitors allow DC signals to pass.
- True
- False
Show hintHide hint
Consider the primary function of coupling capacitors.
Question 5.
Design a current amplifier circuit to amplify a 10uA input current to 100uA with a load of 10 ohms. Calculate the required A, and resistance values.
Show hintHide hint
Use the unloaded current gain formula.
Question 6.
Discuss the primary trade-offs between high input resistance and low output resistance in application circuits for current amplifiers.
Show hintHide hint
Consider how input and output impedances influence overall performance.

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