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"noise" in LC resonant circuit

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hv addict

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hi all, this is my first post here i am 15 and in 10th grade. I have been working with electronics since i was 11 and i have a pretty good understanding of alot of things. My main interests right now are high voltage and tesla coils but i came here to expand my horizon in many other things. Now that i introduced myself, i have a question. I am using a lc resonant half bridge inverter running at about 240khz using HGT1N40N60A4D igbt's and i am getting some nasty ringing in the primary circuit and gate signals. Here is a pic of the primary current through a 1000:1 ct with a 10Ω burdon resistor for .01v/amp https://farm4.static.flickr.com/3569/3477856909_5ae85ed1e8_b.jpg and here is a pic of the gate signal running at 24v https://farm4.static.flickr.com/3334/3477855335_e097cc19ac_b.jpg https://farm4.static.flickr.com/3614/3478747178_c7f365d38f_b.jpg I am really not sure what is going on here and why it is doing that but thanks in advance for any help.
 
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