Then I suggest you study your textbook and learn exactly that. If you have specific questions, then ask.Puglife said:Hi, I need to learn how to find equivalent circuits using what my textbook calls open circuit and short circuit methods.
Thank you all for you support
Draw any particular circuit for which you would like such a solution and then attempt to solve it and then if/when you get stuck post the circuit and what you have tried so far.Puglife said:That wasn't that helpful of an answer, their is a reason I am asking a physics forum on electrical engineering instead of either googling it or using what little my textbook had on it. If you want a more direct question it is this, how do you set up, and solve a equivalent circuit using an open and closed circuit model?
I want to help you on this but I'm just not clear what you are asking. What is your understanding of, say "the open circuit method" and how it is different from just doing computing the equivalent resistances?Puglife said:All I know how to do for equivalent circuits is how to use the parallel and series resistive equations, that does to my understanding get the equivalent circuit, what I want to know, is how to even begin doing it with the short and open circuit methods, and now, why would I use those methods over just series and parallel resistor rules.
Thanks, your response time is amazing
i do not know the difference between the two, or really what the open circuit method is. I know how to find equivalent resistance using parallel and series equations, but my textbook keeps referring to a open circuit method that they did not talk about. I don't know how to even start doing it, or what it really is.phinds said:I want to help you on this but I'm just not clear what you are asking. What is your understanding of, say "the open circuit method" and how it is different from just doing computing the equivalent resistances?
unfortunately, I do not own a scanner, or a camera, so that would be kind of difficult. I am living on an extremely low budget right now. but is their a method for solving the thevanine equivalent circuits using open or closed circuits?phinds said:Can you scan a paragraph out of the book where they are discussing it?
mathwhiz said:It's helpful to find equivalent circuits because you can narrow a circuit with many resistors and a source to just one source and one resistor. The only thing you are doing with open circuit is removing the load resistor, for circuits 1 it's typically the resistor on the far right, or on the other side of the source.After removing the load you look into the circuit from that end and perform all your parallel and series transformations until you get down to one equivalent resistor and the source. The benefit being now you can quickly find current and other information for different loads. The problem is you lose any information if needed about individual resistors. It has been a while so I need to look again at why you use short circuit method, I know you are replacing the load resistor with a current source, typically 1 amp and use it to find something.
Just google "Thevenin equivalent circuit" and "Norton equivalent circuit". There are plenty of explanations and examples on the internet.Puglife said:Is their any way you can supply sample equations for short circuit and open circuit methods, I am just starting out, and It would really be helpful to me.
Thank you guys so much for all of your help
In a series circuit, the equivalent resistance is simply the sum of all individual resistances. This can be calculated by adding the resistance values of each component in the circuit.
In a parallel circuit, the equivalent resistance is calculated using the formula 1/R = 1/R1 + 1/R2 + 1/R3 + ..., where R1, R2, R3, etc. are the resistance values of each component. The reciprocal of this sum gives the equivalent resistance.
In a series circuit, the equivalent capacitance is the reciprocal of the sum of the reciprocals of each individual capacitance. This can be calculated using the formula 1/C = 1/C1 + 1/C2 + 1/C3 + ..., where C1, C2, C3, etc. are the capacitance values of each component.
In a parallel circuit, the equivalent capacitance is simply the sum of all individual capacitances. This can be calculated by adding the capacitance values of each component.
In a circuit with both series and parallel components, you can use a combination of the above methods. First, calculate the equivalent resistance of all the components in parallel. Then, use this equivalent resistance in place of the parallel components in the series circuit and calculate the equivalent resistance using the first method mentioned above.