Small-signal amplification and power amplification are dependent on the application where they are going to be applied. In most cases, the frequency range of the signal is critical to its ability to carry the information that is being transferred.
In this activity, we will explore the effects of the internal and external capacitances on the frequency response of the system. We will also discuss the advantages and disadvantages of using the amplifier’s response to eliminate unwanted noise from the system.
Before you begin, be sure you review the following resources:
In your original post, answer the following:
- In your own words, explain the difference between low pass filters and high pass filters. A Common-Emitter BJT amplifier acts as what type of filter?
- In your own words, explain how internal capacitance and external capacitance affects the overall filter characteristics
- How does having two cut off frequencies that are the same effect the overall cut off frequency?
- When you have a multi-stage amplifier, how do you determine the bandwidth of the overall frequency response of the amplifier?
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