43.1. Necessary Features of the Buffer

Try these first

1. 1.

   What should the output resistance of a voltage mode buffer be?

   Hint

   Think about how resistance affects circuit connections.

2. 2.

   Why is high input resistance desired in voltage buffers?

   Hint

   Consider the impact on the incoming signal.

3. 3.

   What is the desired output resistance for a voltage mode buffer?

   • High
   • Low
   • Medium

   Hint

   Think about what happens if resistance is too high.

4. 4.

   True or False: Input resistance in a current mode buffer should be high.

   • True
   • False

   Hint

   Consider the role of input resistance in signal flow.

5. 5.

   Given a buffer with a high output resistance inserted into a circuit stage, what effects might this have on overall circuit performance?

   Hint

   Think about how each component in a circuit interacts with its neighbors.

6. 6.

   Design a simple voltage buffer circuit using a BJT configuration. Discuss the necessary features this buffer must possess and how they affect circuit function.

   Hint

   Use the features we've learned in this section while describing the circuit design.