I'm glad these are helpful. They are helping me to learn the material too. As the subject material gets more complicated, I'm finding it more challenging to make the videos "easily understandable," so I appreciate the vote of confidence.
Are you speaking in terms of magnitudes for the n relations when both dots are in the same spot? Because I learned that for the current relation it would be negative when they are on the same side.
Pakito, You are right! Thanks for pointing this out. The capacitor in the upper right corner is supposed to be -j8. That will make the calculations correct and also match the problem in our book. I've added annotations throughout the video to clarify this. Thanks!
I believe that the turns ratio is a matter of perspective. The choice of primary and secondary is arbitrary although in most practical applications the primary is an obvious chioce (the side with a power source). The important concept is that for an ideal transformer power transfer is ideal, ie. if the voltage doubles, the current is cut in half. There maybe some textbook differences, but I use Ns/Np = n in conjunction with the equations described in the video.
But why does V2 equal to the power source? Correct if I'm wrong, but V2 is the voltage across the left inductor on the upper transformer, right? So the voltage across it shouldn't be equal to the power source cause we have a resistor and a capacitor in the mesh. So a mesh current equation should be written to find the V2 in relation to the source. Am I right?
I totally agree with you, the voltage across the primary coil should be the voltage of the source minus the sum of voltages across the resistor and the capacitor
Question: You said to change the -j6 capacitor to -j8 but you also said that it was not reflected, ergo the value must not change. Did you mean to put the -j8 in the secondary transformer in the original problem ? also, how do you know which components in the circuit can be reflected. P.S: Anyone who feels confident may answer this question.
What am I missing here.? How does the transformer work on DC. There is no changing magnetic field--how do you get mutal coupling. I like this idea of reflection but have never seen it taught.
something is wrong with this, I think he flipped all n's it's N2/N1 not N1/N2 cause when he used the z equation he was supposed to divide but he multiplied in all his calculations
I'm glad these are helpful. They are helping me to learn the material too. As the subject material gets more complicated, I'm finding it more challenging to make the videos "easily understandable," so I appreciate the vote of confidence.
Thank you so much, this is very helpful. Hard to find well done and easily understandable lectures in electrical engineering, but you nailed it.
Thanks from Turkey. Very clear expressions
Your videos are incredible, well done, and very easy to understand.
Are you speaking in terms of magnitudes for the n relations when both dots are in the same spot? Because I learned that for the current relation it would be negative when they are on the same side.
Pakito, You are right! Thanks for pointing this out. The capacitor in the upper right corner is supposed to be -j8. That will make the calculations correct and also match the problem in our book. I've added annotations throughout the video to clarify this. Thanks!
there is a miscalulation error for the total impedance the tolal will be 31+40j and the final voltage will be 1.897
You are write
Right
you are just amazing . I am from Jordan and I wasn't able to manage the ideal transformer for my exam , but you solve my problem thank you :)
I believe that the turns ratio is a matter of perspective. The choice of primary and secondary is arbitrary although in most practical applications the primary is an obvious chioce (the side with a power source). The important concept is that for an ideal transformer power transfer is ideal, ie. if the voltage doubles, the current is cut in half. There maybe some textbook differences, but I use Ns/Np = n in conjunction with the equations described in the video.
They don't even teach this way of solving ideal transformers in our uni... i can't fathom why :S
But why does V2 equal to the power source? Correct if I'm wrong, but V2 is the voltage across the left inductor on the upper transformer, right? So the voltage across it shouldn't be equal to the power source cause we have a resistor and a capacitor in the mesh. So a mesh current equation should be written to find the V2 in relation to the source. Am I right?
I totally agree with you, the voltage across the primary coil should be the voltage of the source minus the sum of voltages across the resistor and the capacitor
yes
You just saved my ass on the last day before my endsems
Question: You said to change the -j6 capacitor to -j8 but you also said that it was not reflected, ergo the value must not change. Did you mean to put the -j8 in the secondary transformer in the original problem ? also, how do you know which components in the circuit can be reflected.
P.S: Anyone who feels confident may answer this question.
For the convention that I'm using n = N2/N1 where n2 is on the right. I maintain this consistency with the second transformer as well
What am I missing here.? How does the transformer work on DC. There is no changing magnetic field--how do you get mutal coupling. I like this idea of reflection but have never seen it taught.
You bet! I'm sure I'll be back to see more of your videos as you make them.
isn't there anything related to current sign convention ? because that is the part confusing me ...
Thank you sooo much this was really helpful for me
thanks a lot! you did help me understand better :)
im just tryna find the new transformers trailer
lol !!! Welcome to Electrical Engineering my friend !!
the dots are not given in the problem how would i know if its opposing or they the same ?
tbh good question im not sure buddy
NP/NS = a is the winding turns ratio
The total impedence will be 31+j40 not j38
+Fazle Rabbi Riyad He said to use -j8 at 5:45 ...
but how does it ( -j8 ) come ?
How do you know which variable is Z1 or Z2?
sorry for the late reply. but you can just choose it. in the video he made '2' the top right transformer and used that notation for the entire problem
n blue =2 .. how you geiven n blue =0.5 ?
Legend
god i wish my professor would assign problems this simple.
Thank you for clarification
Thank you !
It was really helpful, thank you.
Thank you sir
something is wrong with this, I think he flipped all n's it's N2/N1 not N1/N2 cause when he used the z equation he was supposed to divide but he multiplied in all his calculations
thank you! helped me alot
optimist prime is the ideal transformer
n blue its 2 and the n red is one half
tarihe not : ismail bunu sordu hacettepelysen çalış knk buna
çıkar bak
thank you :D
marry me.