I am getting wrong output voltage in ideal transformer , how can I fix this ?

Please try changing the "Max step size" in the "Model Settings" to something smaller so that it resolves your sine wave better. If you are using "auto" for Max step size, it can easily choose a step that is far too big when you are simulating many cycles.

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Devansh Tanna 2020-10-7

Thanks @David , It worked by changing max-time step to 0.001 from 0.2 , and there is one thing I tried when I joined sinwave block through controlled voltage source , It worked ther also why is that , does sinwave block has smaller step size than step size of "Model Setting" ?

David John 2020-10-7

编辑：David John 2020-10-7

Glad to hear that it worked. For your question, have a look at https://www.mathworks.com/help/simulink/gui/max-step-size.html which explains the auto choice for Max step size. Sine and Signal Generator do indeed employ a different heuristic for Max step size.

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