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I had a shock of a flyback :|

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GrantX

Wed Jan 25 2012, 03:35AM

Registered Member #4074 Joined: Mon Aug 29 2011, 06:58AM
Location: Australia
Posts: 335

Goodchild wrote ...

Killa-X wrote ...

Goodchild. Different story in your case. Quiet obvious your not going to die touching that...your QCW isnt puting out 1cm thick (to the eye) plasma filled arcs that make 1/4" bolts glow :P

Um you sure about that? I've melted through 1/4 steel bolts that I've used for breakoupoints with my QCW before. Tungsten seem to be the only think that the QCW won't melt.

The QCW is more power than a flyback, a LOT more. Granted it is slightly higher voltage generally <50Kv in most cases, it still can have some scary current, that's why the sparks are a thick white color. :P

I thought that because the frequency of Tesla coil streamers is so high that they mostly do not activate nerves, so even 100mA would not cause paralysis of breathing or heart fibrillation?

From what I've read (a limited amount, honestly) I thought any damage done by Tesla coil streamers is because of tissue heating?

I'm assuming a flyback runs at a low enough frequency that the current flow has the usual effects on nerves (grip current at about 17mA, heart fibrillation at 50mA+)

Goodchild

Wed Jan 25 2012, 06:16AM

Registered Member #2292 Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795

XravenorX wrote ...

Goodchild wrote ...

Well the funning thing is that if you take the PW on the QCW and make it really supper small ( this is really low power BTW) it hurts like !@#$. Just like a regular DR but if you up the PW into the mS rang and at higher power it no longer hurts.

I propose from my experience with getting zapped that the rise time of the energy plays a large role on how much you feel it. So slow rise time maybe you can't feel as early as fast rise times. Just what I've noticed.

Alex M

Wed Jan 25 2012, 08:39AM

Registered Member #3943 Joined: Sun Jun 12 2011, 05:24PM
Location: The Shire, UK
Posts: 552

Interestingly I was experimenting with one of those slayer exciter circuits the other day and every-time I touched any conductor such as a crocodile clip (on the battery terminals for example) I could feel a slight pin-prick followed by the smell of burning flesh!

Not sure if it was a form of RF burns but my multimeter's (measuring the current) display was going crazy with various areas of the display halfway turning on from the interference.

I always though the frequency of those things were into the Mhz range.

Steve Conner

Wed Jan 25 2012, 11:26AM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

You can pass a couple of hundred milliamps of RF through your body without feeling anything, as long as you take care of the current density at the points of entry and exit.

Whether this is at all "safe" in the long term is of course a different question

Marko

Wed Jan 25 2012, 02:59PM

Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145

Hey guys,

I used to light incandescent bulbs of up to 100W by coupling them to a SSTC through my body - it seems that even up to a half an amp or so of RF current doesn't bother human body much as long as it's not too concentrated anywehere.

I first did this by simply holding bulbs with my thumb and index finger which after a while apparently caused me to develop the weirdest pain in thumb/ankle joint, which went away over two days or so.
Probably not surprising since one time I managed to hold my hand very close to a SSTC and actually feel the skin on my palm warming up for a few seconds!

Later I decided it's smarter to use a copper tube for an electrode and hold it with both hands in order to allow for much larger portion of skin to make contact. I demonstrated that in one video along with a few other experiments.

Forty

Wed Jan 25 2012, 05:45PM

Registered Member #3888 Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649

I'd be wary standing next to that qcw coil because of where else it might spark to.

Platinum

Wed Jan 25 2012, 05:53PM

Registered Member #3926 Joined: Fri Jun 03 2011, 08:32PM
Location: UK.
Posts: 525

What happens at 1:54?

Goodchild

Wed Jan 25 2012, 05:56PM

Registered Member #2292 Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795

Forty wrote ...

I'd be wary standing next to that qcw coil because of where else it might spark to.

hahaha! believe it or not it's actually really hard to get the QCW to hit anything... You really have to put your hand right into the sparks and even then it only hits it once in a while. For the most part the E-field of the toroid keeps the sparks going up.

haxor5354

Fri Jan 27 2012, 04:00AM

Registered Member #2063 Joined: Sat Apr 04 2009, 03:16PM
Location: Toronto
Posts: 352

got bit by a zvs driven flyback with 36v input
never use screw driver as chicken sticks, i had my finger too close to the metal shaft and it arced to it, the shock wasn't as bad as the burn though

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