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Twin-t notch filter transfer function
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Topic: Twin-t notch filter transfer function (Read 1042 times)
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miketan3904
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Twin-t notch filter transfer function
«
on:
June 11, 2020, 08:51:46 pm »
Hi. I am referring to this document:
https://www.analog.com/media/en/training-seminars/tutorials/MT-225.pdf
I was trying to derive the transfer function given in the document but failed.
I have attached the schematic diagram with node labeling and the equation that i wrote at node Vx, Vy and the non-inverting input of U4. I substitute the first and second equation into the third equation but the transfer function that i get (fourth equation) is different from the document.
I would appreciate if someone can point out my mistake. Thank you!
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RoGeorge
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Re: Twin-t notch filter transfer function
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Reply #1 on:
June 11, 2020, 08:59:00 pm »
Last time you posted here
https://www.eevblog.com/forum/beginners/input-impedance-of-twin-t-notch-filter/
and abandoned the subject.
To see if there are any answers to your own posts, click the "
Show new replies to your posts.
" link shown in the upper left of any page in this forum, the link on the right of your avatar picture, under your own username.
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Benta
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Re: Twin-t notch filter transfer function
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Reply #2 on:
June 11, 2020, 09:43:55 pm »
From what I can see, no mistake. I'm sure you're in a position to work this out. Cut 'n paste doesn't do it.
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