Preview of practice Practical Circuit Behaviour (23.5.3) - Linear models of Amplifiers (Part B)
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Practical Circuit Behaviour

Practice - Practical Circuit Behaviour

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Practice Questions

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Question 1 Easy

What is a current amplifier?

💡 Hint: Think about the purpose of the amplifier.

Question 2 Easy

What does the unloaded current gain indicate?

💡 Hint: Focus on the term 'unloaded'.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does a current amplifier do?

A. Amplifies voltage
B. Amplifies current
C. Attenuates signal

💡 Hint: Recall the definition of a current amplifier.

Question 2

The unloaded current gain is defined as:

True
False

💡 Hint: Think about what 'unloaded' means.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Design a simple current amplifier model that can react to an input current of 3 mA with an expected unloaded gain of 5. What would be the unloaded output current? Now, what if a load of 10 ohms is connected?

💡 Hint: Calculate the output using the gain and consider the effect of adding the load.

Challenge 2 Hard

Explain how a change in temperature could affect the operation of a current amplifier configured using BJTs. What practical measures can be taken to mitigate these effects?

💡 Hint: Think about how external conditions influence electronic components.

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