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Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Let's say you have a transformer with 1:1 turns ratio and leakage inductance L. You connect a capacitor C in parallel with the secondary winding and excite the primary winding with a frequency F that equals the resonant frequency of the L and C. Let's say the resonant rise is limited by the transformer core saturating.
The question: Will the reactive current flow only in the secondary winding or in both primary and secondary windings?
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
It flows in both windings, because leakage inductance is a series element. If you had said magnetizing inductance, then the current would only flow in the secondary.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Steve Conner wrote ...
It flows in both windings, because leakage inductance is a series element. If you had said magnetizing inductance, then the current would only flow in the secondary.
That is strange. You know the thread "Resonant MOT arcs"? There I put a capacitor in series with MOT secondary winding that was calculated to resonate with the leakage inductance of the MOT. Strangely enough, when I short-circuited the output, current through the primary winding was 2.6A (per MOT) and as I pulled the arc, it rose to ~10A just before the arc went out.
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One more transformer question
