Delta - Y conversions

Discussion in 'Homework Help' started by xortan, May 24, 2010.

  1. xortan

    Thread Starter New Member

    Apr 27, 2010
    3
    0
    Hello everyone I got my my exam in circuits and I have come across a pretty tricky delta - Y conversion question. I understand how to do these conversions and all that but this question has me confused and I dont know if I am heading in the right direction or not. I have provided the question and a pic of some of the work I've done. If somebody cause please provide a solution to this problem that would be great as this is the only question on the entire review I don't get and my exam is tommorow morning!

    I have gotten it down to something that looks like a T circuit but then I am not sure how to calculate Rin and Rout, I have like 6 pieces of scrap paper beside me of attempts of trying to figure this out and its really starting to strees and demoralize me....please help!

    Thanks in advance!
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    Your work is virtually illegible.

    In any case there are a couple of simple reductions which you may have already included.

    R7, R8 and R10 are in parallel. Also R6 & R9 are in parallel. So these are immediately reducible without recourse to Delta-Wye reduction. R3, R4 & R5 are an obvious candidate for Y-Δ.
     
  3. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    Since you are so close to an exam I'll attach a solution for the reduction to a 'T' form.
     
  4. xortan

    Thread Starter New Member

    Apr 27, 2010
    3
    0
    Oh my god you are my hero! thank you so much!
     
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