29.4.3. Power Dissipation

Try these first

1. 1.

   What is the formula for calculating power dissipation in a CE amplifier?

   Hint

   Think about the relationship between voltage and current.

2. 2.

   Why is power dissipation important in circuit design?

   Hint

   Consider the consequences of too much heat in a circuit.

3. 3.

   What is the primary method of calculating power dissipation in a CE amplifier?

   • A: V_CC × I_C
   • B: V_CC × (I_C + I_B)
   • C: I_C × I_B

   Hint

   Think about how both currents contribute.

4. 4.

   True or False: Power dissipation increases when collector current decreases.

   • True
   • False

   Hint

   Consider what happens when less current flows.

5. 5.

   Given a CE amplifier with V_CC = 10V, I_C = 1.5mA, and I_B = 7.5µA, calculate the total power dissipation. Discuss what this implies for the circuit design.

   Hint

   Focus on converting all currents into the same measurement before calculating.

6. 6.

   Analyze how increasing the collector current to 3mA while keeping the same voltage impacts the efficiency and what adjustments could be made in the design.

   Hint

   Consider engineering adjustments—how can currents and resistances interrelate to maintain performance?