(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Calculate the equivalent impedance about terminals A and B.

[PLAIN]http://img218.imageshack.us/img218/9335/circuits827.png [Broken]

Z1 = -j2 ohms

Z2 = 1 ohm

Z3 = j2 ohms

Z4 = 2 ohms

2. Relevant equations

Adding parallel: Zeq = z1*z2/z1+z2

Adding in series Zeq = z1+z2

3. The attempt at a solution

I honestly have been staring at this problem for hours and cannot figure it out. I'm beginning to wonder if you have to perform a Y to Delta transformation about Z1, Z3, and Z4. Without doing that I cannot see how to simplify this problem. Is there another way? Or, is that the only way to solve it by doing a Y to Delta transformation about Z1, Z3, and Z4.

Help / advice much appreciated in advance.

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# Homework Help: Simplify the following circuit (all impedances)

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