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
LScamper wrote:
...B field is controlled by amp-turns --- This is true for DC. For transient and AC conditions the inductance, if designed correctly, keeps the current down and the core from saturating. It is the volt-seconds, that is the number of turns, the saturation flux of the magnetic material, and the size of the core, that determine if the core will saturate. V-S = NBA. Current is not involved.
If the core saturates, which is controlled by the current, then harmonics are produced in the secondary which distorts the output waveform.
Oh, which also changes the inductance and volt-second relationship...
The volt-second relationship is only valid for continuous current flow during steady state.
If you exceed the kVA rating, with a large impulse current, then my guess is the core will saturate - it is being operated outside of design specifications...
