Obtaining a desired Impedence

[windozeuser]

I need to select components in multisim that will give an impedance of (3 + j4)

Now to calculate inductive reactance the forumula is XL = 2(pi)FL

I need to calculate the inductance value for the needed impedance so...

j4/(2(pi)60) = inductance needed?

I am connecting this to a 60Hz AC source, I wouldn't use (3 + j4) , just j4 right in the calculation? the 3 is a real part which is a 3 ohm resistor?

 

[RCinFLA]

You can put a 10.6 mH coil in series with 3 ohm resistor.

Or put 16.6 mH coil in parallel with 8.33 ohm resistor.

Both equal 3 + j4 at 60 Hz.

 

[windozeuser]

Thanks thats what I calculated, just wanted to make sure!

 

[RCinFLA]

If you do this for real, be aware of the resistance equivalence within the inductor.