- #1
I_am_learning
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Say, I want to design, 220 / 12 V 100VA transformer.
We have
V = 4.4BfNA (V is applied voltage RMS, B is peak flux Density, N is no. of turns, f is frequency, A is core cross section)
so, B = V / (4.4 f NA)
If i use iron core, there is limit to the maximum value of B without excessive saturation losses. So there is constraint for the minimum value for N*A.
But seems like we can choose N and A arbitrarily. Why not use a tiny core A and huge N if that saves money. Or the other way round if that saves money.
Whats the optimum choice?
We have
V = 4.4BfNA (V is applied voltage RMS, B is peak flux Density, N is no. of turns, f is frequency, A is core cross section)
so, B = V / (4.4 f NA)
If i use iron core, there is limit to the maximum value of B without excessive saturation losses. So there is constraint for the minimum value for N*A.
But seems like we can choose N and A arbitrarily. Why not use a tiny core A and huge N if that saves money. Or the other way round if that saves money.
Whats the optimum choice?