Friday, 20 July 2018

power supply - Curious-looking inductors


I was poking around a video amplifier and — in its dual-rail power supply — saw a pair of inductors unlike any inductors I've come across before:



inductor left inductor right


(These are the two sides of the same inductor; the other looks the same.)


What properties is this type of construction trying to achieve?


By the look of things, these sit between a switch mode supply and a 78xx/79xx-based linear regulator. (Happy to provide more details; just let me know of what kind.)




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