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Would any maths be needed for this?

  1. Oct 26, 2008 #1
    Not sure if the question wants description and maths or one or the other. the question is:

    A device responds to the RMS waveform given by:

    V ^ 2 RMS 1 / T Integral T on the top and 0 on the bottom V ^ 2 (t) dt

    Show that the on off pixels in an N line matrix get voltges given by

    V ^ 2 on = 1 / n ( V ^ 2 + 2vsvd+ nvd2^2)

    V ^2 off = 1 / n (V^2s - 2vsv+NVd^2)

    show that the addressing is max'd when

    Vs / Vd = sqre root of N

    Giving the result

    Von/voff max = square root of square root N + 1 / square root of n - 1

    any tips appreciated.

  2. jcsd
  3. Oct 26, 2008 #2


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    Homework Helper

    You will have to show this mathematically. I don't see any part of the question that implies you will need to describe the relationships, but sometimes your solutions need to be backed up by a description so you can simply show what it is you just concluded from your solution.
  4. Oct 27, 2008 #3
    Thank you for your reply. could you give some hints as to how to do this question?
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