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Registered Member #973
Joined: Tue Aug 28 2007, 07:32PM
Location: Pittsburgh, PA
Posts: 66
My secondary is 4" in diameter and 8" tall 32awg wire ~1000 turns. That primary is 1/4" cable which i epoxied the hell out of to stay in that shape.
(poor plexi skills shown here)
there be the fullbridge and pirmary coil. i couldn't imagine using as much power as this primary can support. it's madness.
this coil is actually my graduation project for my senior year at high school, and im probably the only one putting effort into the project (other students do simple things like paint a wall in a room, or bake a cake as their graduation projects). This should help me get into college and what not. My plans later are to audio mod it and increase power....MORE POWER!!!
Registered Member #973
Joined: Tue Aug 28 2007, 07:32PM
Location: Pittsburgh, PA
Posts: 66
I used a Samsung Digimax D53. it's a cheap $89 camera my little bro got for christmas last year. it takes surprisingly good pictures. Since we are on the topic, what are good settings for taking coil streamers' pictures (ISO shutter speed, etc.)? i have had trouble getting good pictures of the actual sparks when it's on.
Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
I thought I had replied here earlier, anyway nice and compact coil. The spark output looks good for just 90V, just solve the arc-over problem and run full power.
Registered Member #973
Joined: Tue Aug 28 2007, 07:32PM
Location: Pittsburgh, PA
Posts: 66
the sparks are so quick it happens when the camera shutter is 'closed' and it fades in and out. that sounds awesome btw, nicely done. What setup are you using to start the oscillation before the feedback circuit kicks on?
Banned on 3/17/2009. Registered Member #487
Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617
Bauerb2 wrote ...
the sparks are so quick it happens when the camera shutter is 'closed' and it fades in and out. that sounds awesome btw, nicely done. What setup are you using to start the oscillation before the feedback circuit kicks on?
-Andrew
The oscillation starts on its own. The interrupter takes care of all that. I use this circuit with a half bridge of IRFP450's----> R2 and R1 values are diffrent. R2 is 47K and R1 is 1meg ]1196493129_487_FT34939_screamer_logic_rev_b.pdf[/
file]
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Mini SSTC
as their graduation projects). This should help me get into college and what not. My plans later are to audio mod it and increase power....MORE POWER!!! 
