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Nairaland Forum / Science/Technology / Please Help (852 Views)
Please Help by ElectGINeer(m): 10:17am On Nov 11, 2015 |
A broadcasting station transmit at a
frequency of 89.5MHz. What capacitance
together with an inductance of 30microH is
needed to tune to this station.
.
.
Teempakguy , Robinhez , Dekatron , Johnydon22 ,
Acorntree ,
It is from OAU post utme past questions 1 Like |
Re: Please Help by Nobody: 10:33am On Nov 11, 2015 |
no voltage or current value was provided? |
Re: Please Help by ElectGINeer(m): 12:14pm On Nov 11, 2015 |
Teempakguy:Yes |
Re: Please Help by Queed: 6:20am On Nov 12, 2015 |
A tank circuit is a parallel combination of a capacitor and inductor, mostly used for TUNNING and Filtering.. To tune to that desired frequency... they would have to oscillate at their resonant frequency; which is when Xl = Xc 2pi*F*L = 1/(2pi*F*C) makin C the subject C = 1/(2*2*pi^2 * F^2 *L) C= capacitance value = ? L=inductance value (30*10^-3 H) F= resonance frequency (89.5*10^6 Hz) ...sure u can take it on from there, don't wanna get my hands dirty on maths this early morning |
Re: Please Help by Nobody: 2:54pm On Nov 12, 2015 |
Queed:Thank you. i needed this myself. but just to be clear, one can tune in to that resonant frequency when the reactance of the inductor is equal to the reactance of the capacitor? |
Re: Please Help by Queed: 6:21pm On Nov 12, 2015 |
yes
|
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