22.1. Linear Models of Amplifiers (Part A)

Try these first

1. 1.

   What does a voltage amplifier do?

   Hint

   Think about the primary function of an amplifier.

2. 2.

   Define voltage gain.

   Hint

   It's a specific ratio that describes amplification.

3. 3.

   What is the primary function of a voltage amplifier?

   • Convert AC to DC
   • Increase voltage
   • Reduce noise

   Hint

   Focus on the function of amplifiers.

4. 4.

   True or False: The output resistance of an amplifier should be high to effectively drive loads.

   • True
   • False

   Hint

   Think about how resistance affects load interaction.

5. 5.

   Design a voltage amplifier circuit with a required gain of 10. Specify values of resistors needed to achieve this and explain your choice.

   Hint

   Look into the voltage divider principle.

6. 6.

   Analyze how the output voltage of an amplifier changes when a load resistance is connected. Provide equations to support your explanation.

   Hint

   Consider properties of series circuits.