Sorry I posted this in the wrong part earlier today, was in a rush at uni.
After proforming a test at college, I am left to write a report about it. I am now stuck and need help explaining when when you double R-L-C in turn in the circuit you have the same, larger or smaller bandwidth.
Here are my results, i cant show you the circuit as I dont have multisim8 on this PC.
RESULTS Resonant frequency Hz Amplitude at resonance
dB Bandwidth Hz
f2 - f1
R = 80 ohms
L = 40 mH
C = 400 nF 1.254K -38.191 321
Resistance doubled
R = 160 ohms
L = 40 mH
C = 400 nF 1.254K -44.142 645.761
Inductance doubled
R = 80 ohms
L= 80mH
C = 400nF 887.692 -38.212 161.742
Capacitance doubled
R = 80 ohms
L = 40 mH
C = 800nF 887.692 -38.18 324.985
So as you can see, I can tell where the bandwidth is the same or increased / decreased, but I don't understand why if you double the inducatance you get a lower Bandwidth, and if you double the capaistance you get the same... I believe with the resistance doubled you have a much larger bandwidth as you have much less gain (if you plot gain vs. frequncy).
Any help tonight would be very helpful.
After proforming a test at college, I am left to write a report about it. I am now stuck and need help explaining when when you double R-L-C in turn in the circuit you have the same, larger or smaller bandwidth.
Here are my results, i cant show you the circuit as I dont have multisim8 on this PC.
RESULTS Resonant frequency Hz Amplitude at resonance
dB Bandwidth Hz
f2 - f1
R = 80 ohms
L = 40 mH
C = 400 nF 1.254K -38.191 321
Resistance doubled
R = 160 ohms
L = 40 mH
C = 400 nF 1.254K -44.142 645.761
Inductance doubled
R = 80 ohms
L= 80mH
C = 400nF 887.692 -38.212 161.742
Capacitance doubled
R = 80 ohms
L = 40 mH
C = 800nF 887.692 -38.18 324.985
So as you can see, I can tell where the bandwidth is the same or increased / decreased, but I don't understand why if you double the inducatance you get a lower Bandwidth, and if you double the capaistance you get the same... I believe with the resistance doubled you have a much larger bandwidth as you have much less gain (if you plot gain vs. frequncy).
Any help tonight would be very helpful.