Hello everyone,
I have been having some problems with the circuit attached.We were asked to find V1 and V2 at the nodes.The circuit opens at t=0 and disconnects from the Voltage source.The source voltage is 1 Volt.The initial values are:
Vc(0+)=1 V
iL(0+)=1 A
L=0.5 H
C=1 F
G=1 mho(Or Resistance,R = 1 ohm)
I have to solve this by using laplace transforms, mathematically.I think I found part of the solution,but I am unsure.
Equation 1:
(1/L)*∫(V1(t)-V2(t))dt+C(d/dt)(V1(t))=0
Corresponding Laplace equation:
(2+s)*V1(s)-2*V2(s)=s-1-----------------(1)
Equation 2:
(1/L)*∫(V2(t)-V1(t))dt+V2*G=0
(Conductance,G is taklen)
Laplace:
-2*V1(s)+(2+s)*V2(s)=-1----------------(2)
Solving (1) and (2):
2*(1)+(2)*(2+s):
we get:
V2(s)=(s-4)/(s^2+4*s)
or V2(t)=-1+2*exp(-4t)
Is my answer correct?
Similarly,I got:
V1(s)=(s^2+s-2)/(s^2+4s)
This doesn't seem right..does it?Have I gone wrong somewhere?
Thank you in advance for your help
I have been having some problems with the circuit attached.We were asked to find V1 and V2 at the nodes.The circuit opens at t=0 and disconnects from the Voltage source.The source voltage is 1 Volt.The initial values are:
Vc(0+)=1 V
iL(0+)=1 A
L=0.5 H
C=1 F
G=1 mho(Or Resistance,R = 1 ohm)
I have to solve this by using laplace transforms, mathematically.I think I found part of the solution,but I am unsure.
Equation 1:
(1/L)*∫(V1(t)-V2(t))dt+C(d/dt)(V1(t))=0
Corresponding Laplace equation:
(2+s)*V1(s)-2*V2(s)=s-1-----------------(1)
Equation 2:
(1/L)*∫(V2(t)-V1(t))dt+V2*G=0
(Conductance,G is taklen)
Laplace:
-2*V1(s)+(2+s)*V2(s)=-1----------------(2)
Solving (1) and (2):
2*(1)+(2)*(2+s):
we get:
V2(s)=(s-4)/(s^2+4*s)
or V2(t)=-1+2*exp(-4t)
Is my answer correct?
Similarly,I got:
V1(s)=(s^2+s-2)/(s^2+4s)
This doesn't seem right..does it?Have I gone wrong somewhere?
Thank you in advance for your help
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