30.1.2. Discussion on Design Guidelines

Try these first

1. 1.

   What is the first step in designing a Common Emitter Amplifier?

   Hint

   Think about what powers the circuit.

2. 2.

   What does Beta (β) represent in a BJT?

   Hint

   Consider how current behaves in the device.

3. 3.

   What is the role of the quiescent point in a Common Emitter Amplifier?

   • True
   • False

   Hint

   Remember why we set an operating point.

4. 4.

   In a Common Emitter Amplifier, increasing the collector current will increase power dissipation. Is this statement true or false?

   • True
   • False

   Hint

   Think about how power is related to both current and voltage.

5. 5.

   Design a CE amplifier with a supply voltage of 15V, desired gain of 20, and a minimal output swing of ±2V. Calculate the necessary component values.

   Hint

   Start with determining the voltage drop across the collector resistor.

6. 6.

   Suppose the power dissipation limit on your circuit is 500mW and your VCC is 12V. Determine the maximum collector current and discuss the implications on your designs.

   Hint

   Consider how P relates to V and I.