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Registered Member #180
Joined: Thu Feb 16 2006, 02:12AM
Location: Ontario, Canada
Posts: 187
Hey sweet sparks! Glad it's working, one thing though, your primary coil is wound directly over the secondary. If there is any sort of insulation failuer (say you added a topload, and it didn't want to break out, so all the voltage has to go somewhere) then you risk blowing your bridge, I think the same thing was happening to me befor. That may have been why that was happening, with the MOSFETs dieing cold. I'd say add something between them, and also try spacing the primary turns and/or raising the primary, that will change the length of the sparks dramatically (from experience).
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
What makes a suitable primary coil form that is not PVC pipe? I don't feel like buying another 10ft of material that I won't use for a long time, perhaps some sort of tupperware container?
Registered Member #160
Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
You can use cardboard, but to be safe I would dry it in the oven and then coat it with enamel. Nice work, looks good. You should give half wave a try, I reckon the sparks look good, less hot too.
Registered Member #618
Joined: Sat Mar 31 2007, 04:15AM
Location: Us-Great Lakes
Posts: 628
I used a peice of 6in dia 6in long peice of rubber attachement, the kind youd use to connect 2 6in dia pipes and just tightend down with hose clamps. Just remove the hose clamps and trim the rubber to fit snuggly over your secondary, and then ust aplly a crap load of electrical tape or some other kind of insulation material to cover up the joint. It works great, in my case I would get corona to build up on the out side of the insulated 10awg wire but never arc over since I had .5in of rubber between the pri and secondary, a well as aa good 2in of air\rubber from the top turn to the secondry.
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First SSTC's first light! What tweaks/refinements are possible?
