23.2.1. Prof. Pradip Mandal

Try these first

1. 1.

   What is the primary function of a current amplifier?

   Hint

   Think about the name of the amplifier.

2. 2.

   What does DC bias do in a BJT?

   Hint

   Consider what is needed to keep it functioning.

3. 3.

   What is the main function of a current amplifier?

   • Amplifying voltage signals
   • Amplifying current signals
   • Both

   Hint

   Think about what 'current amplifier' implies.

4. 4.

   True or False: In a current amplifier, the load affects the output current measured.

   • True
   • False

   Hint

   Reflect on our discussions about loading effects.

5. 5.

   If you connect a load resistance of 50Ω to a current amplifier with an unloaded current gain of 10, calculate the approximate output current if the input current is 2mA.

   Hint

   Consider how current divides between loads.

6. 6.

   Design a simple current amplifier circuit using a BJT and calculate its input/output resistance if the bias current is set at 1mA.

   Hint

   Think about the bias current and how it relates to the output current.