Author Topic: tiny arcs even at high powers?  (Read 194 times)

Offline tophat

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tiny arcs even at high powers?
« on: May 09, 2021, 01:02:16 AM »
Hello all, I just finished up my drsstc (half bridge of cm300dy-12nf, ud1.3b driver, .23uf 8kv tank capacitor, 3-10 turns, 4" by 24" 2000 turns secondary with 18" by 4.5" toriod 78khz resonant frequency with both) and even at pretty high powers (150+vdc bus) I am getting sub 1cm arcs, and heating of the igbt and bus bars. I tuned it to the best of my ability but even tuned as well as I can I am getting 5mm arcs max. I am super confused and any help to finally get some better arcs would be much appreciated!

Offline AstRii

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Re: tiny arcs even at high powers?
« Reply #1 on: May 09, 2021, 01:30:05 AM »
Have you tried to reverse polarity of your feedback CT or GDT?

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Re: tiny arcs even at high powers?
« Reply #1 on: May 09, 2021, 01:30:05 AM »

 


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