Hey everyone,
I'm struggling pretty bad with my circuits homework and we are currently going over Thevenin Equivalents. I understand the basic theory of it all, a complicated circuit may be reduced into a simple voltage and series resistor, or into a current source and parallel resistor (norton equivalent).
What I really am struggling with though is all the different analysis methods. We've learned nodal, mesh, and source transformation. We've also covered supermeshes and superposition. I can never figure out when I need to use one method over the other, except source transforms, those are fairly easy.
Anyway, I'm dealing with this circuit...
I'm playing around with the circuit in Circuitlab, and I've pretty much decided I have to leave the circuit as is (I cannot combine any resistors or perform any source transformations)
and now I'm stuck. It goes back to the nodal analysis or mesh analysis. Only problem is, I have no friggen' idea what to do. I have come to the conclusion with nodal analysis, you typically are finding the voltage at each node, and with mesh analysis, you are finding the current in a mesh.
I have seen methods where people will short circuit their active elements (voltage and current sources), but I'm still pretty unsure on that also...
Anyway... I'm going to give that a shot, if I disconnect my sources I get...
So from here, if my thought process is correct, I can say my only valid resistors left are: R13, 14, and 15, which from there, it will be 1\16000 + 1\1000 = 16000\17 = 941.2 Ohms...
From that I could say that my Rth = 941.2 Ohms?
So continueing on, I need to find my Vth, which I can say the node where the current source, R13, and R14 meet up, is the same voltage that will be going into the load. I can calculate this voltage using my Rth, and the current that would be going into the load. My current is going to be some mess of values from the resistors, voltage and current source, and I'll be honest, the two resistors on the left hand side of the circuit are completely screwing me up because I don't know what the heck to do with them. I know their current is 5mA (I = 10\2000), and I proved that on my software. But I really do not understand where to proceed from here.
Can anyone please help?
I'm struggling pretty bad with my circuits homework and we are currently going over Thevenin Equivalents. I understand the basic theory of it all, a complicated circuit may be reduced into a simple voltage and series resistor, or into a current source and parallel resistor (norton equivalent).
What I really am struggling with though is all the different analysis methods. We've learned nodal, mesh, and source transformation. We've also covered supermeshes and superposition. I can never figure out when I need to use one method over the other, except source transforms, those are fairly easy.
Anyway, I'm dealing with this circuit...
I'm playing around with the circuit in Circuitlab, and I've pretty much decided I have to leave the circuit as is (I cannot combine any resistors or perform any source transformations)
and now I'm stuck. It goes back to the nodal analysis or mesh analysis. Only problem is, I have no friggen' idea what to do. I have come to the conclusion with nodal analysis, you typically are finding the voltage at each node, and with mesh analysis, you are finding the current in a mesh.
I have seen methods where people will short circuit their active elements (voltage and current sources), but I'm still pretty unsure on that also...
Anyway... I'm going to give that a shot, if I disconnect my sources I get...
So from here, if my thought process is correct, I can say my only valid resistors left are: R13, 14, and 15, which from there, it will be 1\16000 + 1\1000 = 16000\17 = 941.2 Ohms...
From that I could say that my Rth = 941.2 Ohms?
So continueing on, I need to find my Vth, which I can say the node where the current source, R13, and R14 meet up, is the same voltage that will be going into the load. I can calculate this voltage using my Rth, and the current that would be going into the load. My current is going to be some mess of values from the resistors, voltage and current source, and I'll be honest, the two resistors on the left hand side of the circuit are completely screwing me up because I don't know what the heck to do with them. I know their current is 5mA (I = 10\2000), and I proved that on my software. But I really do not understand where to proceed from here.
Can anyone please help?