23.5. Current Amplifier Model Overview

Try these first

1. 1.

   What does a current amplifier do?

   Hint

   Think about how input and output signals relate.

2. 2.

   What is an unloaded current gain?

   Hint

   Consider what happens when no external resistor is connected.

3. 3.

   What is the primary function of a current amplifier?

   • To amplify voltage
   • To amplify current
   • To regulate temperature

   Hint

   Focus on the definition of current versus voltage amplification.

4. 4.

   True or False: Unloaded current gain measures amplification with load connected.

   • True
   • False

   Hint

   Recall the definition of 'unloaded' in amplification.

5. 5.

   Design a current amplifier system with specific parameters, including an input current of 10mA, an unloaded current gain of 5, and an output resistance of 1kΩ. What is the expected output current and how does the load affect it?

   Hint

   Consider the circuit as a loading effect and see how the output changes with different load resistances.

6. 6.

   If you were to connect two current amplifiers in series with the output of the first serving as the input of the second, how would you analyze this combined configuration in terms of current gain and loading effects?

   Hint

   Focus on how each amplifier's characteristics can interact through their loading effects.