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Comments on BJT common emitter amplifier equivalent circuit (π hybrid model)

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BJT common emitter amplifier equivalent circuit (π hybrid model) [closed]

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Closed as unclear by Olin Lathrop‭ on Nov 8, 2022 at 20:50

This question cannot be answered in its current form, because critical information is missing.

This question was closed; new answers can no longer be added. Users with the reopen privilege may vote to reopen this question if it has been improved or closed incorrectly.

Im studying the equivalent model of a BJT common emitter amplifier at high frequencies.At university we tought that the BJT at high frequencies looks something like this:

However when designing a common emitter amplifier we have to take into account any base resistors .So I draw this diagram but I dont know if it is correct.Should the base resistor be before Rx or after?

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1 comment thread

You have been told this before. Your diagrams need to be neat and readable. Your first diagram is s... (3 comments)
You have been told this before. Your diagrams need to be neat and readable. Your first diagram is s...
Olin Lathrop‭ wrote over 1 year ago

You have been told this before. Your diagrams need to be neat and readable. Your first diagram is so out of focus that we can't even read some of the component designators. The others are so small that they are difficult to read. You could easily expand them to fill the 640 pixel width available for pictures.

You have been told all this before. We've even sometimes fixed it for you. At this point, you are being deliberately disrespectful. Closing without even reading the text.

Sloppiness and thumbing your nose at people has consequences.

LvW‭ wrote over 1 year ago · edited over 1 year ago

I am not sure if this comment is an appropriate answer to an unexperienced forum member...("deliberately disrespectful"..).

a concerned citizen‭ wrote over 1 year ago

LvW‭ Admittedly, seeing this for the first time without any prior knowledge might seem harsh but, if you would see all this user's history here (preferably in chronological order), you will get a better feeling of why Olin replied as he did (and why things evolved to this point). What I mean is, there are good reasons behind these actions. Of course, OP has but to modify the question, accordingly, and I'm sure the downvotes will be gone.