Question

HW11P1 Qn.2, not getting...If we tune to a station at f=860.0kHz what is the capacitance, in picoFarads, of the tuning capacitor?
Qn4.If next we tune to a station at f=1300.0kHz what is the capacitance, in picoFarads, of the tuning capacitor?

Answer 1

H11P1
1.ω=2πf
Capacitance C=1/((ω^2)L)
2.Bandwidth
Δω = RL/L + 1/(Rc *C)
3.Capacitance C=1/((ω^2)L)
4.Bandwidth
Δω = RL/L + 1/(R*C *C)

Answer 2

Pls click best response if u get d answer

Answer 3

with f= 860khz
RL=4ohm
Rc=490k
L=0.65mHenry
I can't get the bandwidth to check
I get 44.1 with those values, still won't check, :c

Answer 4

Δω = RL/L + 1/(Rc *C) #2.....4.0/0.65 + 1/(490k *44.1) .....=6.15384620012 is no good for me....help please

Answer 5

check the value of 'C' again.. did u forget to put the value of C's unit..

Answer 6

akash can u help me

Answer 7

Jone133, try this values:

For 860kHz
C = 52.6902190593 pF
band =7.14386096211 kHz

Answer 8

For 860kHz
C = 52.6902190593 pF
band =7.14386096211 kHz

For 1300
C = 23.0589858085 pF
band = 15.0652906669 kHz

If works, please mark as best response :D

Answer 9

for 770 Khz??

Answer 10

allwynj, try 5.92114027851

Answer 11

5.92