23.4.3. Components of Current Amplifiers

Try these first

1. 1.

   What does a current amplifier do?

   Hint

   Think about the difference between voltage and current amplifiers.

2. 2.

   Name the main component often used in current amplifiers.

   Hint

   Remember the acronym BJT!

3. 3.

   What is the primary function of a current amplifier?

   • To amplify voltage
   • To amplify current
   • To convert signals

   Hint

   Remember the definition of a current amplifier.

4. 4.

   The loading effect can affect output current. True or False?

   • True
   • False

   Hint

   Think about what happens when you add a load.

5. 5.

   Calculate the output current if the input current is 2mA and the unloaded current gain is 50.

   Hint

   Use the formula I_out = A * I_in.

6. 6.

   If an amplifier has a load resistance of 100 ohms and the unloaded current gain is 10, what is the modified output current if the input current is 5mA?

   Hint

   Consider the parallel resistances in your computation.