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
ken white wrote:
"Look at the B-H curves for the various magnetic materials and you will see the B field is controlled by the amp-turns which changes the permeability of the core and induced voltage.
We are talking transient conditions and not steady state...
Why do you think current has no effect?"
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.
"Look at the B-H curves for the various magnetic materials and you will see the B field is controlled by the amp-turns which changes the permeability of the core and induced voltage.
We are talking transient conditions and not steady state...
Why do you think current has no effect?"
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.
