Simple Mini Ramped SSTC Full Bridge testing

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Basic rundown for the unfamiliar is that you're using the 'ramping' shape of the sinusoidal voltage in the half cycle of a line frequency period to power the bridge. This requires you omit the DC smoothing so the rectified AC is only a ramped DC. This occurs at 60hz where I live which equates to a half wave hump that lasts for about 8.3 milliseconds. Normally an interrupter will signal the logic to turn the bridge on at any random time but it has a reservoir of straight DC in the smoothing caps so it doesn't matter. Without those caps there needs to be a way for it to know when the rising slope of the half cycle is starting, which is where the Staccato interrupter comes in. The controller knows this by referencing the signal coming from a small transformer also connected to the same Line power. Mine is inside my interrupter box in this video but it can be placed inside the SSTC enclosure to also power the logic.

This is going to be a ramped-only setup like the last one but hopefully be able to run 240VAC arcs on the coil I wind for it but I get the impression I can put any similar coil on it and play with the primary a little to get the same output. IDK if 240 is going to work in a 9.5cm tall coil and may need to enlarge it a little. I found I didn't need the fan I put on there and it kicks on when the sink is barely warm so hopefully twice the voltage will be fine.

If it improves reliability I'll add a PLL feedback stage in between the schmitt trigger and gate drivers. This might be what's needed to allow for a more reliable operation at any voltage cause things don't always run properly now and sometimes all I see and hear is the small bus capacitance discharging. I also don't have a DC blocking capacitor on the output and I need one, but it runs fine without it using this primary. I recommend isolating the interrupter but if you use an optocoupler like I am you just have to make sure the load on the output transistor allows for a proper transmission of duty cycle. Not enough load and the fall time may slope down too slowly and not allow you to run lower on times.

The output I got from these smaller coils was definitely better than what I got from bigger lower frequency coils I had.
My best one yet was 36AWG and the one in this video is 32 and a much easier coil to wind. Winding 32 on a jar of that size to get about a footdischarge on a basic setup like this is not a bad deal, and being able to run full half cycle on times allow for the bassy quiet arcs. The basic tuning was about the same each time. Started with about 8 turns and went down to about 3, each time seeing the best output where the primary was just about to the point of having too high a coupling and causing streaks. Some coils were very picky and needed precise primary adjustment or toploads or particular voltages. This one in the vid much like the last one in my half bridge only spits arcs between about 100VAC and 135VAC. I have yet to figure the cause of this.

Link to drawing of modified Loneoceans Staccato Controller that may be easier to understand.

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Cool! How much bus capacitance would you need? I'm running the tefatronix circuit from a full bridge rectifier. The circuit can't have to large of a bus capacitance on the output of the rectifier, otherwise, it wouldn't be ramped. However, without a bus capacitor, the output is very small. How much bus capacitance would you recommend?

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