This is the continuation of our previous blog last week. So, if you start wondering what are these triangles and y's doing in the circuit here's why:
The transformation is used to establish equivalence for networks with three terminals. Where three elements terminate at a common node and none are sources, the node is eliminated by transforming the impedance. For equivalence, the impedance between any pair of terminals must be the same for both networks.
Now, I will start answering the questions from your curious, little minds. HOW TO TRANSFORM A CIRCUIT FROM Wye to Delta, and vice-versa Delta to Wye?
Detailed equations and formulas are to be precisely used to get the value on y's and on deltas. So, to all the clumsy and happy-go-lucky mates out there, this is a big perimeter-securing on your part.
DELTA to Y:
Formula in getting the Y-values are the following:
R1 = RbRc / (Ra+Rb+Rc)
R2 = RaRc / (Ra+Rb+Rc)
R3 = RaRb / (Ra+Rb+Rc)
There's a technique in doing this without using any formula, if you're asked to get the y-value the resistors which are on its adjacent sides are to be multiplied then divide it to the sum of all the resistors in the circuit. TAKE NOTE: "ADJACENT".
Y to DELTA:
Ra = (R1R2+R2R3+R3R1) / R1
Rb = (R1R2+R2R3+R3R1) / R3
Rc = (R1R2+R2R3+R3R1) / R2
Some say that Y to DELTA is very complex because some circuits in WYE-DELTA TRANSFORMATION are placed in neither parallel nor series connections.
If you have doubts about our blog please try to solve this diagram and mail us at dominiclargo@gmail.com. THANK YOU. GOODBYE.
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