The discussion revolves around deriving the transfer function for an RC circuit, measuring amplitude and phase response, and comparing theoretical results with experimental data. Participants explore methods for calculating the transfer function and generating Bode plots, addressing both conceptual and algebraic challenges.
Participants generally agree on the methods to derive the transfer function and calculate amplitude and phase, but there is no consensus on the specific algebraic manipulations required, as some express confusion and seek clarification.
Some participants note limitations in their algebraic skills, which may affect their ability to manipulate complex numbers effectively. The discussion includes various approaches to the same problem, indicating a lack of a single, universally accepted method.
This discussion may be useful for students and practitioners interested in circuit analysis, particularly those working with RC circuits and seeking to understand transfer functions and Bode plots.
Mitchy190 said:Jolly good show indeed!
I have plotted the phase!
What do you think?
View attachment 46508
Thanks for all your help rude man!
rude man said:You're welcome.
Except I'm confused about one thing - your plots look 100% right but the expressions you allegedly used are not.
The phase is not tan-1(1+ωRC) - tan-1(1+ωR3C). I suspect you used the right expression by accident or something similar. Check your Excel for the formulas you actually used.
BTW I wish I had your knowledge of Excel!