To what degree of precision ?
Thickness of laminations is the antidote for delay due to eddy current.
Your estimate sounds reasonable for a 60 hz power transformer
a 400 hz transformer has thinner laminations so is faster
but there's still 'creep' and Barkhausen to account for.
i don't know much about high fidelity audio transformers that go to tens of kilohertz .
Ferrite is of course way faster .
That's why I'm reluctant to say "yes", for fear it'll be taken for an absolute answer.
One needs to appreciate the shortcomings of any simple mental model; and be able to put a number on its residual error.
That last few per-cent is difficult to characterize..
I appreciate your desire to give mertcan an answer so he can proceed with his inquiry. In that spirit,
"Sure, in a couple milliseconds most of the little transformers you are likely to encounter will be ~98% of the way to steady state.
But do not forget about the early pioneers and their giant railway dynamos that took minutes to settle."
One of those things that's easy to envision but difficult to calculate. You have to characterize the medium.
Going back to this image - triangle wave current (constant di/dt) should produce square wave voltage , but the corners get rounded off because of lengthy time response.
observe lower trace - that stainless steel bar was not yet settled at 50 miliseconds.
With air core the voltage was textbook perfect square wave. Difference was the magnetic medium.
That little experiment taught me a lot.
That image is the 3 hz response . If you go back to post #50 and look at the 10hz and 60 hz traces , they never get past the rounded corner.
I encourage
@mertcan to get some i/o gear for his computer and experiment . We need more students interested in magnetics.
