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Puzzled, basic flyback converter

skenn_ie

Sep 7, 2009
33
Joined
Sep 7, 2009
Messages
33
Hi. Can anyone shed light on this trace ? A very basic flyback converter, channel 2 is the mosFET drain voltage, channel 1 is the transformer output. TEK0000.JPG
rectifier with 4ohm loadWhy am i seeing ringing on the output during the ON phase of the primary ?. If I short the (schottky) diode, the ringing stops.
TIA
 
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bertus

Moderator
Nov 8, 2019
3,304
Joined
Nov 8, 2019
Messages
3,304
Hello,

Can you post a complete schematic?
That way we can see what you are trying to do.

Bertus
 
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