Why is flyback converter(DC to DC converter) called so and what are its main advantages over other techniques?

I did a project of a power supply unit which employs flyback conversion techniques in which the external asked me this question.Why is flyback converter(DC to DC converter) called so and what are its main advantages over other techniques?
The best explanation I've ever heard is that it was

named from the similar circuit the "flyback

transformer". This is what is used to provide the

low-power high-voltage needed to drive a CRT. The

name comes from this use where a sawtooth wave drives

the transformer to build up a voltage to draw an

electron beam across the display. Each time it switches

off, it causes the e-beam to "fly back" from the right

to the left of the screen.



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