Author Topic: My Bestest HV ZVS Driver and Jacobs Ladder  (Read 266 times)

Offline Andrew321

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My Bestest HV ZVS Driver and Jacobs Ladder
« on: October 24, 2021, 02:21:37 AM »
Been a long time in the making but here we are!





Offline MRMILSTAR

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Re: My Bestest HV ZVS Driver and Jacobs Ladder
« Reply #1 on: October 24, 2021, 05:03:08 AM »
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.
« Last Edit: October 24, 2021, 05:10:57 AM by MRMILSTAR »
Steve White
Cedar Rapids, Iowa
Retired electrical engineer

Offline davekni

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Re: My Bestest HV ZVS Driver and Jacobs Ladder
« Reply #2 on: October 24, 2021, 05:55:33 AM »
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.
David Knierim

Offline Duane B

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Re: My Bestest HV ZVS Driver and Jacobs Ladder
« Reply #3 on: October 24, 2021, 08:21:45 PM »
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!
Duane Bylund

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Re: My Bestest HV ZVS Driver and Jacobs Ladder
« Reply #3 on: October 24, 2021, 08:21:45 PM »

 


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