Recent content by romo84

  1. R

    Creating 300VAC for 3 Phase Variable Frequency Drive Testing

    Hi, Because I cannot find a 480 to 300V transformer. Also would I need a transformer for each phase?
  2. R

    Creating 300VAC for 3 Phase Variable Frequency Drive Testing

    Hello all, I have a 3 phase Variable frequence drive that requires an input voltage of 380-480VAC. I would like to test what would happen if I apply 300VAC to the drive. I have access to 208V and 440V. Is there anything I can do to obtain 300V? I have thought about a variable power supply...
  3. R

    Solution of the reccurrence relation

    It is actually to be solved using "Linear homogeneous recurrence relations" using the characteristic equation. and a2 = 4, not 8.
  4. R

    Solution of the reccurrence relation

    Yes, I am to find the non-recurrsive form (closed form). Thank You!
  5. R

    Solution of the reccurrence relation

    Homework Statement Find the solution of the recurrence relation an=3an-1 - 3an-2 + an-3 if a0=2, a1=2, and a2= 8. Homework Equations The Attempt at a Solution I know that I need to express an in terms of an-1 but don't know how to conclude.
  6. R

    Combination and induction question

    Thanks very much, I understand what the question is asking now!
  7. R

    Combination and induction question

    actually, the n is located above the summation symbol, it is not j=2^n. any advise?
  8. R

    Combination and induction question

    Homework Statement I need some help with this question please. Prove using mathematical induction that Σn, j=2 C(j,2) = C(n+1,3) whenever n is an integer greater than 1. I am not even sure how to get the basis step because it does not makes sense to me to calculate C(j,2), wouldn't that...