37.1.3. Small Signal Equivalent Circuit

Try these first

1. 1.

   What does the small signal equivalent circuit model represent?

   Hint

   Think about the operating condition of the circuit.

2. 2.

   What is transconductance?

   Hint

   Recall the relationship in amplifiers.

3. 3.

   What is the relationship between transconductance and voltage?

   • Directly Proportional
   • Inversely Proportional
   • Independent

   Hint

   Think about the definition of transconductance.

4. 4.

   The small signal equivalent circuit is used to analyze high frequency signals.

   • True
   • False

   Hint

   Focus on the term 'small signal'.

5. 5.

   Design a small signal equivalent circuit for a common emitter amplifier, identifying all critical components and their contributions to voltage gain.

   Hint

   Map out the circuit step by step, starting with the transistor's parameters.

6. 6.

   Given a common source amplifier with specific resistor and capacitor values, calculate the lower and upper cutoff frequencies and explain their importance in signal processing.

   Hint

   Use the definitions of cutoff frequency related to R-C circuits.