Consider a two windings transformer (I'm not talking about flyback transformer):
- Magnetizing inductance is not equal to mutual inductance. Mutual inductance refers to the energy which is transfered from the primary to the secondary. The energy which is not transfered from the primary to the secondary refers to the leakage inductances and?
- Magnetizing inductance correspond to an inductance which is placed in parallel to the primary side of the transformer. So the energy stored in the magnetizing inductance (1/2LI²) is not transfered to the secondary. As some people says it "sets up" the transformer for then transfering energy to the secondary.
- Apparently in a forward transformer, if the magnetizing inductance was infinite, the flux into the transformer would be equal to 0 as the flux at the primary would be cancelled by the secondary.
What do you think about it?