High Voltage Forum
High voltage => Transformer (Ferrite Core) => Topic started by: Andrew321 on October 24, 2021, 02:21:37 AM
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Been a long time in the making but here we are!
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Very nice. I'd love to see some details on the transformer specs such as number of turns, wire gauge, core size, input voltage, etc.
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Great to see it working well with no more IGBT frying! Yes, as you say in the video, soft-start is critical. Otherwise current in L3 and L4 ramps up too high before oscillation starts. Once oscillation does start, excess energy stored in L3 and L4 generates a voltage spike on IGBTs with more energy than the TVS diodes can handle.
It would be interesting to measure DC current for a more accurate power estimate. Power factor will be somewhat low, so peak AC current is not a good indication. Does look to be higher power than my ZVS-driven Jacob's ladder.
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Great looking system! I like the ferrite transformer. What frequency does this run at? I was wondering how good this would work at driving the base of a Tesla resonator? Much more powerful than anything I have tried!