webers (or magnetic energy) increases, with each pulse more energy in core, as a result voltage steps up on output. In this case, the step charge could be seen on the output without a wfc connected:
this is not how inductors work.....it would be lovely but hte magnetic field reaches full strength then drops creating a second pulse......then on the next on pulse creates the same magnetic field and then drops the magnetic field again.
it doesn't consistantly increase it's magnetic field strength each time there is a pulse.....the inductor acts as a pump.....up and down up and down at a certain frequency.
think of it like a flat board in a pool of water going up and down.....it creates waves......those waves are reflected back and if it goes up and down at the right time it will create larger and larger waves ...this is RESONANCE.
inductor is the static pump.
capcitor is the dynamic increasing reflections
play with a circuit program and make the circuit in resonance....you will see.