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Yes, yes we are and that's the reason I'm not going to ask the previous poster about "stored electrical energy in the transformer"
Surely you know about stored energy in a inductor, which is what a transformer is. It is related to the need for a snubber across a switch.
The energy stored in the magnetic field of an inductor (or the inductance of a transformer) can be expressed as. W = 1/2 L I2 (1). where. W = energy stored (joules, J). L = inductance (henrys, H).
This is the principle that allows the ignition coil on a gasoline powered engine to work.
I used stored electrical energy, while not necessarily the most precise, it gives a simple example of the need for a snubber across a switch, it keeps everything in terms of electricity.
When the magnetic field collapses, the stored magnetic energy is converted into electrical energy and we are back to the need for snubber across the switch.