Why do we need multiple amplifier stages in electronic circuits?

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SUMMARY

The discussion centers on the necessity of multiple amplifier stages in electronic circuits, particularly for amplifying small AC signals. Participants highlight that using multiple stages, such as Darlington pairs, enhances current gain while maintaining stability and reducing distortion. The Gain Bandwidth Product (GBP) is emphasized as a critical factor, illustrating that higher gains require careful consideration of bandwidth. Additionally, the role of negative feedback is debated, with consensus that while it improves DC stability, it can degrade dynamic stability, necessitating a trade-off in design.

PREREQUISITES
  • Understanding of amplifier stages and their configurations, such as Darlington transistors.
  • Familiarity with Gain Bandwidth Product (GBP) and its implications in amplifier design.
  • Knowledge of negative feedback mechanisms in electronic circuits.
  • Basic principles of AC signal amplification and distortion management.
NEXT STEPS
  • Research the design and implementation of Darlington transistor configurations for increased gain.
  • Study the concept of Gain Bandwidth Product (GBP) and its application in amplifier selection.
  • Explore the effects of negative feedback on amplifier stability and performance.
  • Investigate methods to linearize amplifier stages to minimize distortion.
USEFUL FOR

Electronics engineers, circuit designers, and students studying analog electronics who seek to understand the complexities of amplifier design and the trade-offs involved in achieving desired performance metrics.

  • #31
LvW, what makes you think your questions have more priority than anyone else? I don't believe you have asked me a direct question so it would be pretty hard for me to answer. I don't believe I ever said you are "most outright wrong". I have seen what I have seen and I know what I know. It would have been nice to resolve this with a simple admission from one side or the other that phase margin or something else is being considered by one side and not the other. What a waste this has turned into.
-
Edit: I believe milesyoung was the first to ask a question besides the original poster. Wouldn't it be logical that his question is answered first?
 
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  • #32
Averagesupernova - please, excuse me. As far as the statement "most outright wrong" is concerned, I have I have mixed milesyoung`s answer (post#25) with one of your answers. I am sorry for that.
Nevertheless, I do not like to continue this (slightly aggressive) "discussion" - and it does not help the OP at all.
As far as the technical aspects are concerned, I just have said everything I wanted to say.
Bye bye.
LvW
 
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  • #33
My excuses about the late respond. I was away for a bit and couldn't chat back. My thanks to all of you who answered to this thread. Thank you!
 
  • #34
handbags girls
 
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