Parallel R C circuit impedance calculator is ready

Discussion in 'Electrical Engineering' started by Patrick Chung, Nov 7, 2013.

  1. Patrick Chung, Nov 7, 2013
    #1
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  2. Patrick Chung

    Don Kelly Guest

    On 07/11/2013 12:08 AM, Patrick Chung wrote:
    > http://www.cirvirlab.com/simulation/parallel_r_c_circuit_impedance_calculator.php
    >
    >
    > Higher the frequency, overall impedance is less including real part. Check it and enjoy.
    >



    For whom is this simulation (as well as others) intended?
    It is not a teaching tool-except for you in practicing programming.

    I have a 25-30 year old HP calculator that can do the same thing and, in
    addition, store the result for later use (after all the whole purpose
    of the calculation is to get a circuit reduction for such use).

    If one wants to learn basic circuit analysis - then suggest going to
    basics to figure out the relationship and then explore- seeing very
    quickly how frequency affects the impedance [ R/(1+jRwC)] which can
    quickly be sketched.


    --
    Don Kelly
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    Don Kelly, Nov 8, 2013
    #2
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  3. Patrick Chung

    Adrian C Guest

    On 08/11/2013 02:47, Don Kelly wrote:
    > On 07/11/2013 12:08 AM, Patrick Chung wrote:
    >> http://www.cirvirlab.com/simulation/parallel_r_c_circuit_impedance_calculator.php
    >>
    >>
    >>
    >> Higher the frequency, overall impedance is less including real part.
    >> Check it and enjoy.
    >>

    >
    >
    > For whom is this simulation (as well as others) intended?
    > It is not a teaching tool-except for you in practicing programming.


    I've got a deep seated feeling reading a lot of "developing world" posts
    to newsgroups and web forumns from students that are based in countries
    suffering poor levels of technical teaching, that the confused students
    themselves are trying also to get to grips with the technical or
    coloquial American or British use of English.

    If they had been set an assignment question straight out of a textbook
    the easy (some would say cheat) way to climb the mountain is either to
    find online the "solutions manual" the textbook publishers normally
    share with educators, or some other resource - these calculators? - so
    that the answer can be completed, and maybe something learnt but not the
    important longhand theory based method of doing things correctly in the
    first place, which lends itself to adaption when the circumstances of
    the problem changes.

    The standard of doing the education plainly needs raising. Teaching
    texts need proper language localisation, and teachers need to be trained
    properly to explain what they are teaching rather than reading a foreign
    textbook line by line to them and doing the questions at the end of the
    chapter. The kids are smart, but are being let down.

    --
    Adrian C
     
    Adrian C, Nov 9, 2013
    #3
  4. Patrick Chung

    Don Kelly Guest

    On 09/11/2013 4:09 AM, Adrian C wrote:
    > On 08/11/2013 02:47, Don Kelly wrote:
    >> On 07/11/2013 12:08 AM, Patrick Chung wrote:
    >>> http://www.cirvirlab.com/simulation/parallel_r_c_circuit_impedance_calculator.php
    >>>
    >>>
    >>>
    >>>
    >>> Higher the frequency, overall impedance is less including real part.
    >>> Check it and enjoy.
    >>>

    >>
    >>
    >> For whom is this simulation (as well as others) intended?
    >> It is not a teaching tool-except for you in practicing programming.

    >
    > I've got a deep seated feeling reading a lot of "developing world" posts
    > to newsgroups and web forumns from students that are based in countries
    > suffering poor levels of technical teaching, that the confused students
    > themselves are trying also to get to grips with the technical or
    > coloquial American or British use of English.
    >
    > If they had been set an assignment question straight out of a textbook
    > the easy (some would say cheat) way to climb the mountain is either to
    > find online the "solutions manual" the textbook publishers normally
    > share with educators, or some other resource - these calculators? - so
    > that the answer can be completed, and maybe something learnt but not the
    > important longhand theory based method of doing things correctly in the
    > first place, which lends itself to adaption when the circumstances of
    > the problem changes.
    >
    > The standard of doing the education plainly needs raising. Teaching
    > texts need proper language localisation, and teachers need to be trained
    > properly to explain what they are teaching rather than reading a foreign
    > textbook line by line to them and doing the questions at the end of the
    > chapter. The kids are smart, but are being let down.
    >

    What you have said is true.
    However I am not sure that the original post is a "developing country"
    problem. It is a problem in our "advanced" countries. It shows up at
    universities at all levels- we can give students a bag of tools but need
    to challenge them with problems that may not fit the rote examples.
    What is missing is often what is the most important part of education-
    encouraging the concept of "thinking". I can give examples (including
    some that I blew but learned from).

    Don Kelly
    remove the cross to reply
     
    Don Kelly, Nov 11, 2013
    #4
  5. Patrick Chung

    Don Kelly Guest

    On 09/11/2013 8:08 PM, Salmon Egg wrote:
    > In article <OgYeu.123930$>, Don Kelly <>
    > wrote:
    >
    >> On 07/11/2013 12:08 AM, Patrick Chung wrote:
    >>> http://www.cirvirlab.com/simulation/parallel_r_c_circuit_impedance_calculato
    >>> r.php
    >>>
    >>>
    >>> Higher the frequency, overall impedance is less including real part. Check
    >>> it and enjoy.
    >>>

    >>
    >>
    >> For whom is this simulation (as well as others) intended?
    >> It is not a teaching tool-except for you in practicing programming.
    >>
    >> I have a 25-30 year old HP calculator that can do the same thing and, in
    >> addition, store the result for later use (after all the whole purpose
    >> of the calculation is to get a circuit reduction for such use).
    >>
    >> If one wants to learn basic circuit analysis - then suggest going to
    >> basics to figure out the relationship and then explore- seeing very
    >> quickly how frequency affects the impedance [ R/(1+jRwC)] which can
    >> quickly be sketched.

    >
    > If this guy wants to do something useful, I would suggest him devising a
    > tool to check if a network polynomial is stable and then synthesize it.
    > If that is too easy. let him figure out how to synthesize networks
    > containing pieces of transmission liens.
    >
    > It could also be that he is an out-in-out troll and we are his victims.
    >

    Ah, but with liens, you are getting into lawyer territory- there be
    dragons- not trolls!

    --
    Don Kelly
    remove the cross to reply
     
    Don Kelly, Nov 11, 2013
    #5
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