33.5.5. Input Resistance

Try these first

1. 1.

   What is the formula to calculate input resistance for two resistors in parallel?

   Hint

   Think about the parallel resistor formula.

2. 2.

   Explain why higher input resistance is beneficial.

   Hint

   Consider how it affects signal strength.

3. 3.

   What does input resistance help maintain?

   • Higher gain
   • Lower distortion
   • Better signal integrity

   Hint

   Remember the role of resistance in signal paths.

4. 4.

   True or False: Higher input resistance always leads to better performance in all applications.

   • True
   • False

   Hint

   Consider specific use cases.

5. 5.

   Design an amplifier circuit with an input resistance of at least 100 kΩ. Identify components and discuss trade-offs.

   Hint

   Think about the relationships and implications of the resistances.

6. 6.

   If two inputs of a circuit have resistances of 50 kΩ and 150 kΩ in parallel, find the resultant resistance.

   Hint

   Use the parallel formula for resistance calculations.