A transformer has 1200 turns primary and 4800 turns secondary. What value of load resistance would be required to give a reflected impedance of 1000 ohms?
- 4 kOhm.
- 1 kOhm.
- 16 kOhm.
Explanation
Reflected impedance equals the load times the square of the turns ratio (Np/Ns). Here Np/Ns = 1200/4800 = 1/4, so Zp = ZL x (1/4)-squared = ZL/16. Setting that to 1000 ohms gives ZL = 16,000 ohms = 16 kOhm. Ignoring the squaring would wrongly give 4 kOhm.
PASCHOULIS asking:
Please write your question here.
Community Comments (0)
No one has posted a comment here yet.
Please Sign In to post a comment.