22.1.2. Concepts to be Covered

Try these first

1. 1.

   What is a voltage amplifier?

   Hint

   Think about which part of a signal it enhances.

2. 2.

   What is a current amplifier?

   Hint

   Consider which electrical property it focuses on.

3. 3.

   What does a voltage amplifier do?

   • Boosts current
   • Boosts voltage
   • Reduces noise

   Hint

   Think about the function of the amplifier.

4. 4.

   True or False: A trans-conductance amplifier's output current is controlled by the input voltage.

   • True
   • False

   Hint

   Consider how the input voltage influences output.

5. 5.

   Design a dual-stage amplifier circuit. Explain how the voltage amplifier prepares the signal for the current amplifier.

   Hint

   Think about the sequence and interaction of the stages.

6. 6.

   If you have a trans-conductance amplifier with an input voltage of 2V, how much output current will it produce if the trans-conductance is 5 mS?

   Hint

   Use the formula for computing output current based on trans-conductance.