Converter In-Rush Thermistors etc, UPDATE -4
UPDATE on 17 Nov, Update 2 on 22 Nov, Update 3 on 16 Jan 14, Update 4 on 19 Oct 14. --------------- In a recent thread there was mention of how you can wreck your gizmo (in my case a converter) ...
Forum Discussion
lorelec wrote:ken white wrote:
Not sure I agree with that assessment, especially since in-rush in the core can be many orders of magnitude greater than steady state, but everything is just speculation without having it in hand and testing anyway.
The bulk capacitors can draw large impulse currents through the rectifiers as well, but this is averaged over a complete cycle at the input.
This is not the case with the inductance.
This would depend on the load, whether current or voltage mode is being used, whether soft-start is present. The core/transformer is not inherently going to draw a huge surge of power all by itself. If anything, inductance will help to mitigate surges, as a sudden change in voltage across an inductance will not cause a corresponding sudden change in current.
We're talking in-rush, not steady state...
EDIT: Look Here -> In-Rush
