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Registered Member #215
Joined: Sun Feb 19 2006, 09:14PM
Location:
Posts: 30
Seeing as everyone else was having fun, I decided to join in
I used different amounts of extremely strong [50 lb carrying capacity each ] Nd magnets and used them as ground. I was running approx 35-40 kV DC via one of my flybacks. The arc didn't seem to want to stay in one place, it kinda ran around the edge of the magnet (3/4" in dia) and flickered around. Very intresting...
Don't have any pics, seeing as I dont have a nice digi cam to record with Maybe someday...
I've been scavenging old disposable cameras for cap bank lately, so I have a TON of flahstubes and neon indicator lamps I've desoldered lying around. I'm going to make a huge chain of them and see how many I can light up
Registered Member #311
Joined: Sun Mar 12 2006, 08:28PM
Location:
Posts: 253
I think the physics are pretty straightforward - Fleming's Left-Hand rule. Current+magnetic field = force, in this case on the stream of ionised air. The fact it's form a FBT means it will be (pulsed) dc, so movement will be in a consistent direction. AC would probaby behave noticeably differently (and if you could switch the polarity of the DC supply you could maybe get some interesting effects...) I did some sort-of related stuff a while ago bending plasma streams in a xenon flashtube with a magnet :
Registered Member #227
Joined: Mon Feb 20 2006, 10:47PM
Location: Cambridge Ontario, Canada!!
Posts: 127
I read this tonight I I ran down to the bat cave!(my shop) shoved everything off my bench and oooooooooh! I like. I had the magnets of the 3 MO I just took apart.
I have a video but know clue how to post it... 'lil help?
Registered Member #78
Joined: Thu Feb 09 2006, 11:27AM
Location: Sydney, Australia
Posts: 133
lol, i've excited plasma vortex fever into everyone.
I'm still trying to make a hour glass shaped vortex, as well as an upside down one. Although admittely i don't have much time as term 1 exams are coming soon...
Registered Member #316
Joined: Mon Mar 13 2006, 01:30PM
Location: Marietta, GA
Posts: 212
I tried this yesterday with a half-wave rectified NST. It spun, but very slowly and with a jerky motion. I think this may only work with a higher frequency. I'll try again today with my 12kv 120ma NST stack.
Registered Member #51
Joined: Thu Feb 09 2006, 04:17AM
Location:
Posts: 263
To make the arc stable you probably need high frequency AC to rectify to DC. If you try to rectify an NST you need some kind of filter cap on the output to make it stable.
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Plasma Vortex
] Nd magnets and used them as ground. I was running approx 35-40 kV DC via one of my flybacks. The arc didn't seem to want to stay in one place, it kinda ran around the edge of the magnet (3/4" in dia) and flickered around. Very intresting...
Maybe someday...
