34.1.5. Voltage Gain Calculation

Try these first

1. 1.

   What does voltage gain represent?

   Hint

   Think about the relationship between input and output.

2. 2.

   Why do we want the transistor to operate in saturation?

   Hint

   Consider the operational modes of transistors.

3. 3.

   What is the key function of the DC operating point?

   • To enhance output load
   • To stabilize the amplifier
   • To amplify weak signals

   Hint

   Focus on conditions that influence steady performance.

4. 4.

   True or False: A higher voltage gain always leads to better circuit performance.

   • True
   • False

   Hint

   Consider the trade-off between gain and clarity.

5. 5.

   In a given circuit, with a supply voltage of 18V and a required output swing of 10V, calculate the necessary resistor values if the target current is 1.2 mA.

   Hint

   Utilize Ohm's law and the principles of voltage division to approach the solution.

6. 6.

   If the input resistance of the amplifier is 15 kΩ, how does this value influence the choice of coupling capacitors when aiming for a lower cutoff frequency of 5Hz?

   Hint

   The lower the frequency, the larger the capacitance required, which links R and C directly.