Hi All,

My name is Joaquim and I'm new in this forums. I am a Electronic Engineer student (1st Year).

I have a question about a Thevenin equivalent circuit in AC.

I need someone to tell me if I'm doing the right math in finding the thevenin equivalent (AB point):

Please see the attached circuit.


I need to calculate the inductor reactance
(Xl) = 2 * Pi * F * L
The capacitor reactance
(Xc) = 1 / ( 2 * Pi * F * C )

And then I add R1 to L1 reactance and parallel with C1 reactance.
Finally, the result added to R2.

((R1+XL1) // XC1)+R2 = ZThevenin

Are my calculations correct or I'm missing something?

Thanks in advance

Joaquim

 

Where is the circuit?

 

Attached now. Bad url. Sorry & Thanks

Joaquim

 

You are right.

 

Looks right to me also.

For the sake of completeness, I imagine that your instructor intended for you to complete the calculation. Then you would be able to use the given frequency of the AC voltage source to compute the actual value of Zth.

hgmjr