51.1.11. Effect of Source Resistance on Voltage Gain

Try these first

1. 1.

   Define voltage gain in amplifiers.

   Hint

   Think about what makes an amplifier effective.

2. 2.

   What does source resistance do to an input signal?

   Hint

   Consider how resistance affects current flow.

3. 3.

   What is the primary function of a common base amplifier?

   • To increase voltage gain
   • To decrease voltage gain
   • To provide isolation

   Hint

   Think about its basic use in electronic circuits.

4. 4.

   True or False: Increasing source resistance leads to greater voltage gain.

   • True
   • False

   Hint

   Consider how resistance affects the input signal.

5. 5.

   Calculate the expected voltage gain of a common base amplifier if the output voltage is found to be 200V with an input of 2V. Discuss how varying source resistance from 0 to 10kΩ would change your expected results.

   Hint

   Take into account how input and output interact through Ohm’s Law.

6. 6.

   Design a circuit using a common base amplifier to process a weak signal. What components would you consider to minimize the source resistance effect?

   Hint

   Consider how biasing can affect overall circuit performance.