Editing Flyback transformer (section)

{{Short description|High frequency pulse transformer commonly used to drive cathode-ray tubes}}
{{Multiple issues|{{More footnotes|date=November 2012}}
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[[File:Flyback transformer arc.jpg|thumb|An old-style flyback transformer producing an [[Electric arc|arc]]]]
[[File:DST Zeilentrafo.jpg|thumb|upright|Modern flyback transformer with integral triple in a [[CRT television]]]]

A '''flyback transformer''' ('''FBT'''), also called a '''line output transformer''' ('''LOPT'''), is a special type of electrical [[transformer]]. It was initially designed to generate high-voltage [[Sawtooth wave|sawtooth]] signals at a relatively high frequency. In modern applications, it is used extensively in [[Switched-mode power supply|switched-mode power supplies]] for both low (3&nbsp;V) and high voltage (over 10&nbsp;kV) supplies.