23.3. Lecture - 23

Try these first

1. 1.

   What does a current amplifier output?

   Hint

   Remember, it's not voltage.

2. 2.

   What is DC bias?

   Hint

   Think about operating points of BJTs.

3. 3.

   What is the output of a current amplifier?

   • Voltage
   • Current
   • Power

   Hint

   Think of its name.

4. 4.

   True or False: An unloaded current gain is affected by the load connected.

   • True
   • False

   Hint

   Reflect on the definition of 'unloaded'.

5. 5.

   If a current amplifier has an unloaded gain of 10 and the input current is 2mA, calculate the output current when a load of 1kΩ is connected and the output resistance is 500Ω.

   Hint

   Use the unloading current formula while accounting for output resistance.

6. 6.

   Design a lab experiment to visualize the effect of varying load resistance on output current in a current amplifier. Include method and expected outcomes.

   Hint

   Consider using a multimeter for reading output current.