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Reply To: Transformer Riddle No.32 – Flux deflection in transformers

#1738
Barry Fleming

    This is the transformer that I have designed and as can be seen I have measured in the air gap between the upper face of the coils and the lower face of the core. The coils are copper with 1000 turns each and a current of 4A is being applied to the primary coil only. In that air gap is hardly any flux, on the left side is just below zero and on the right side it is just above zero. Is this due to mutual induction and an opposing force being set up in the secondary coil and also due to the air gap reluctance which is higher than that of the core? I am only interested in the air gap between the coils and the core and not the air gap between the coils. I have also noticed that when I apply a current of 2A the flux in the core is quite low, but if I apply 4A it is quite high which would follow, but here