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T
tharper1-Visitor
1-Visitor
October 2, 2018
Solved

Solving for Transfer Function

  • October 2, 2018
  • 1 reply
  • 5323 views

Hi All,

This may end up being a very simple question for some of you advanced folks.  I have been using Mathcad for years, but not always at a great depth, and somewhat sporadically. 

Anyhow, I was working through some circuits in the s-domain, and MathCad works really well here to quickly narrow down the equations...certainly faster than by hand. 

I have attached the file with my question at the very bottom of of the calculations. 

 

I would really like to solve this circuit for Vo/Vi to arrive at the s-domain transfer function.   Is there a one-step solver in Mathcad for this?  I know how to use the symbolic solver to find a solution for any single variable, but wondering if there is a way to find the expression for Vo/Vi?  

Please don't laugh too hard if I'm missing something obvious through my ignorance.  I have hunted through Mathcad's help and some of the other community entries out here and have not found anything like this. 

 

Thanks!

 

Best answer by Werner_E

Maybe that way:

B.PNG

1 reply

T
tharper1-VisitorAuthor
1-Visitor
October 2, 2018

Doh!  Never mind...I see that I have an extra term in the numerator that is screwing me up. This circuit has offset and I missed this term before writing my question.  My mistake. 

 

Anyhow, faults aside with my initial question, is there a way to directly solve for an expression like Vo/Vi if I didn't have this extra term?  

 

Thanks

W
Werner_E25-Diamond IAnswer
25-Diamond I
October 2, 2018

Maybe that way:

B.PNG

    T
    tharper1-VisitorAuthor
    1-Visitor
    October 3, 2018

    Very slick!  Thank you for the help!

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