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November 14, 2011 AT 9:48 am

Hat coil – A wearable tesla coil hat

Hat coil – A wearable tesla coil hat. tcengineering writes –

Yay, I’m finally documenting my Halloween costoume (which unfortunately blew up the day before halloweekend). Here is a video of hatcoil, a small DRSSTC on top of a hat. AKA, a really bad idea.

Technical details:
28V A123 battery pack
28-180 boost
4xHGTG 30N60B3D IGBT full-bridge with GDT drive
~1200 turn secondary on 1″ PVC
Innertube topload

Really, it’s just a DRSSTC. Nothing less, nothing more, nothing fancy. It was a bit tricky to make a bridge appropriately sized, and even harder to make a boost converter for it. In fact, the boost never truly worked. If I play a mid to high note for a few seconds, the boost can’t keep up and it fades away. I think this is due to saturation of my boost core, but I haven’t really taken the time to do much on this since now I’m back in the gate driver world and also have to throw together my 6.131 power electronics final project. I’ll fix hatcoil in February.


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