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Re: [TCML] A Safe Tesla Coil - was: Tesladownunder update, briefcase coil, lots of sparks etc



Hi Dex,

Since Tesla had?neither the?way at that time to measure usec pulses of 1,000,000 volts nor to measure
usec pulses of 1,000 Amps,?his estimates must all be taken with many grains of salt.
Many of his mega-volt estimates were later demonstrated to be "overly optimistic".

.Matt D.


-----Original Message-----
From: Dex Dexter <dexterlabs@xxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Sun, Jun 28, 2009 6:23 am
Subject: Re: [TCML] A Safe Tesla Coil - was: Tesladownunder update, briefcase coil, lots of sparks etc



"Million volt coil striking grounded conductive object can generate  currents 
exceeding 1000 A".

- Nikola Tesla,1900.

regards,
Dex


--- pterren@xxxxxxxxxxxx wrote:

From: "Peter Terren" <pterren@xxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Cc:
Subject: Re: [TCML] A Safe Tesla Coil - was: Tesladownunder update, briefcase 
coil, lots of sparks etc
Date: Sun, 28 Jun 2009 07:22:14 +0800
<snip>

The sparks from a big TC are not really in the range of mA, however the 
waveform is chaotic and have peak current potentially in 10's of amps on a 
microsecond basis. Even my small TC will give muscular contraction so it 
must be haveing a physiological effect.
So the real safety answers?  Primaries are potentialy lethal and secondaries 
may be.

Peter
www.tesladownunder.com


----- Original Message ----- 
From: "Frosty" <frosty90@xxxxxxxxx>
>
> I agree entirely. All the bad info out there saying tesla coil outputs are
> 'safe' as the high freqencies cannot 'be felt', is terribly misleading. 
> The
> energy availible in a signal tesla 'strike' is probably quite 
> considerable,
> certainly enough to do damage, even if you can't feel it immediately (from
> my experience you can always feel it anyway).
>
> Terry, as you are a doctor you could probably answer this question; what 
> is
> the exact machanism by which electrocution causes death? Im aware there 
> are
> usually more than one reasons, but what are the most common? In terms of
> disrupting the nerves in you heart/circulatory system, it would be
> interesting to know if the higher rf freqeuncies can actually cause the 
> same
> effects as DC and lower audio frequencies. If not, maybe the output is
> 'safer' than its made out to be (bad wording, really should be 'not as 
> much
> of a risk'). Aside from these effects there would be the usual burning 
> etc,
> which seem to be worse at radio frequencies, but still for a small coil
> probably not life threatening.
..
> Cheers,
> Jesse


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