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Well, it is clearly oscillating, so that is good news. I would then suspect that the feedback is not optimal resulting in the coil being driven off of resonance, resulting in low power transfer.
Registered Member #3781
Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701
Steve Conner wrote ...
Have you tried reversing the phase then? Try swapping either the connections from H-bridge to primary, or the connections from driver to GDT.
Yes and no improvement.
I am thinking it is the feedback that's the problem but I have not been able to fix it. I've tried winding the antenna around the coil in several different configurations without much improvement. The best result is still wrapping it around the base of the secondary and I do still have to touch a part of the power supply in order for it to light.
I wasn't being electrocuted while touching the top of the capacitor and none of my components were heating up so I turned the variac up all the way. Here's the result: I also reduced the primary turns to 5.
EDIT: Would it be a bad idea to just solder an antenna onto the the top of the cap? I figure the worst that would happen would be a blown capacitor and it beats holding onto it
You know, I had these EXACT strange issues as well but the wierdest part to me is how all those issues disappeared when I rewound the primary closer to the secondary. I had them "touching" obviously there is good insulation in the primary.... Try different numbers of turns, since you are using a different secondary design.
Keep at it, you're really close! When I made the coil change I went from your results to quite strong Eco-friendly white streamers ranging from 6-8" ;)
Edit: to YOUR edit, no. My antenna was pretty lame and even at great distances it still worked flawlessly. Actually, the garage which is about 50-60 feet away from my room, when I turned the TC on the lights that you touch to turn on would turn on from the coil!!!! That's a terribly structured/not-well-described sentence but I think you get the idea. Jeez I'm on my ipad, laptop is dead so whatever. I wish you all the best though. It's stressful but keep tinkering.
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2.5' SSTC First Light
