33.5.4. Output Resistance

Try these first

1. 1.

   Define output resistance in the context of amplifiers.

   Hint

   Think about the relationship between current and voltage.

2. 2.

   What do we mean by small signal model?

   Hint

   Recall how we simplify the circuit for small AC signals.

3. 3.

   What does output resistance indicate in an amplifier?

   • A) Current input
   • B) Voltage output variation
   • C) Signal frequency

   Hint

   Think about what happens when loads change connected to the amplifier.

4. 4.

   True or False: High output resistance is always ideal for amplifier design.

   • True
   • False

   Hint

   Reflect on the relationship between output resistance and load interaction.

5. 5.

   A Common Source Amplifier has an output voltage of 12V when the load current is 3mA. Calculate the output resistance.

   Hint

   Remember to convert mA to A when performing calculations.

6. 6.

   If a voltage gain of an amplifier is -10 and the transconductance is 2 mA/V, what is the output resistance?

   Hint

   Make sure to maintain focus on the signs in your calculations!