## Nurali 2 years ago Homework 11

1. Qaisersatti

2. Nurali

Parallel resonant "tank" circuits are common in radio equipment. But unfortunately there is always resistance that prevents them from being perfect: in every real inductor, the wire that makes up the inductance has some resistance, and there may be leakage in the capacitor that can be modeled as a resistance. Also, the Norton resistance of the system connected to the tank circut looks like a leakage through the capacitor. So a realistic model for a tank circuit is the following: In the space provided below write an algebraic expression in terms of the device parameters for the bandwidth Δω of the impedance Z looking into this tank circuit.

The antenna tank of a Graymark 536 Radio Kit has an inductance L≈0.65mH. The resistance of the inductor RL≈4.0Ω. The equivalent resistance across the capacitor is RC≈490.0kΩ. The capacitor is variable, for tuning. If we tune to a station at f=830.0kHz what is the capacitance, in picoFarads, of the tuning capacitor?

What is the bandwidth, in kHz, of the tank at f=830.0kHz?

6. Qaisersatti

What is the bandwidth, in kHz, of the tank at f=980.0kHz?

7.5 is showing wrong for me

8. ash__arya

for f=650khz

If next we tune to a station at f=1270.0kHz what is the capacitance, in picoFarads, of the tuning capacitor??

If next we tune to a station at f=1270.0kHz what is the capacitance, in picoFarads, of the tuning capacitor??

11. Qaisersatti

AND 8.5 IS SHOWING ME WRONG TOO BRO:)

12. ash__arya

again for f=1570khz??

13. ash__arya

n tell me the bandwidth 2

What is the bandwidth, in kHz, of the tank at f=1270.0kHz?

15. Qaisersatti

If next we tune to a station at f=1600.0kHz what is the capacitance, in picoFarads, of the tuning capacitor? incorrect What is the bandwidth, in kHz, of the tank at f=1600.0kHz?

16. buntyvil

plz tell me If we tune to a station at f=740.0kHz what is the capacitance, in picoFarads, of the tuning capacitor?

What is the bandwidth, in kHz, of the tank at f=1270.0kHz?

18. ash__arya

What is the bandwidth, in kHz, of the tank at f=650.0kHz

19. buntyvil

@Nurali: can u tell me the procedure???

20. Qaisersatti

What is the bandwidth, in kHz, of the tank at f=1600.0kHz?

What is the bandwidth, in kHz, of the tank at f=1270.0kHz? ???

22. Qaisersatti

:( 27 IS GIVING ME A CROSS I MEAN F=1600 KHZ

23. buntyvil

What is the bandwidth, in kHz, of the tank at f=740kHz? ???

hw11 p3 From the voltage graphs given above, estimate the Q of the second-order system. Enter your estimation in the space provided below. (Hint: the answer is an integer).???

25. buntyvil

for f=1480.0kHz????

hw11 p3 From the voltage graphs given above, estimate the Q of the second-order system. Enter your estimation in the space provided below. (Hint: the answer is an integer).???

27. buntyvil

and bandwidth

28. Nurali

29. Qaisersatti

30. buntyvil

What is the bandwidth, in kHz, of the tank at f=1480.0kHz?

31. buntyvil

thanks man it was 18.3

32. machu

H11P1 1)1/(RC*C) + RL/L 2)use these formulas a)C=1/(ω2L) b)ω=2πf for me,with L=0.65 and f=680.0, i calculated the value which i got as 8.4 and the answer is 84 3)use formulae in 1 4)Do the same as 2

33. machu

1/w2L ,where 2 means squared......c u all tmrw..im off

34. machu

H11P2 1)VM=.7v VM * 0.1 = 0.07 V 2)cp= 22/9=2.4 3)yet to do 4)0.1*VM(t)=.8v

35. Qaisersatti

The oscilloscope is used to measure and display waveforms at many frequencies. Suppose that VM=0.08cos(2π 147.0×106 t) V. What is the value, in picoFarads, that Cp should be set to so that Vs=0.008V?