## Curry one year ago Question with circuits

1. Curry

2. Curry

@freckles

3. Curry

@sasogeek @ganeshie8

4. hwyl

what do you know so far?

5. Curry

hmm, I know that I should set Rt = Rl to find max power transfer.

6. Curry

So i started by doing source transformation of 50ohm resistor and Vs and then combined the capacitor value, and then did another source transformation to get into a series circuit. and then i equated the resistor||capacitor + inductor to R load.

7. Curry

@UnkleRhaukus

8. Curry

@hwyl

9. kropot72

The notes here give you the required theory: http://www.usna.edu/Users/cs/vincent/suppnotes/EE301Topic24.pdf

10. kropot72

Maximum power is transformed when the Thevenin resistance of the source is equal to the resistance of the load (which is 20 ohms in the question). The Thevenin impedance of the source is found from: $\large Z _{th}=\frac{R}{1+(\omega CR)^{2}}-\frac{j \omega C R^{2}}{1+(\omega CR)^{2}}$ Now you need to put the resistive part of the above Thevenin impedance equal to 20 ohms and plug in R = 50 ohms and omega = 100. Then solve for the value of C. $\large \frac{50}{1+(100\times C \times 50)^{2}}=20$