210VDC Interrupted High Voltage ZVS Tesla Coil

This is the same ZVS driven tesla coil as my previous video buy with a few modifications. First, I'm using a 555 timer and a MOSFET to turn the positive rail to the capacitor bank on and off. Low power turn on keep constant power going at about 30VDC. Using IGBT's rated to 1200V should mean I can take the input voltage to 300VDC, but I was capped at 130VDC because that's where the IGBT's would blow up. Previously while running half wave rectified I noticed that using lower input voltage created a sputtering arc where maybe one in five arcs was small. When you turn up the voltage there is this perfect window where it runs nicely. Go past that window and kaboom! So I figure as the arc forms it loads the coil, maybe increases capacitance some, and changes the coils resonant frequency so that it is lower than the primary resonant frequency. trying to increase spark length by turning up the voltage causes to big a difference. So I added another string of capacitors and I could take it up to about 180VDC before thins explode. I added another sting and I can take is up to 210VDC and it works just fine. So I probably just need to add more strings. In another video I did put a voltage double on it and took it to 230VDC and it exploded. More parts are needed.

Видео 210VDC Interrupted High Voltage ZVS Tesla Coil канала Andrew Kwasek