Re: [TCML] Faraday Cage Safety

[W5als <w5als@xxxxxxxxx>]

Hi Mark
    Have you ever made a bipolar tesla coil before.
Alton

Sent from my iPad

On Aug 9, 2013, at 8:41 AM, Mark X2 <susax2@xxxxxxxxx> wrote:

> Wow Alton,
> that's one amazing workshop you've got there, my compliments. I hope to be
> as disciplined as you are one day.
> I've got some questions I was hoping you or someone else could answer about
> Faraday cages:
> 
> What would be a safe mesh size to catch streamers from entering the cage.
> 
> More inportant would be, what mesh size should one use to have a Faraday
> cage that's effective to keep interference within.
> 
> I only presume it has got something to to with the wavelenght of the
> emitting device?
> 
> Regards,
> Mark
> 
> 
> 
> 
> 2013/8/5 W5als <w5als@xxxxxxxxx>
> 
>> Hi Everyone
>>       On July 8 I wrote a article on on EMI and EMF and faraday cage. I
>> think
>> It may be worth you reading it. It was a three day study I did on it. I
>> think it may
>> Answer some of the question too. I am no expert at this and don't claim to
>> be but
>> This study was in depth.
>> Alton
>> W5als
>> http://www.flickr.com/photos/91001059@N08/
>> 
>> Sent from my iPad
>> 
>> On Aug 4, 2013, at 9:17 PM, ACM de Queiroz <acmdequeiroz@xxxxxxxxx> wrote:
>> 
>>> Em 04/08/2013, às 17:53, Jim Lux <jimlux@xxxxxxxxxxxxx> escreveu:
>>> 
>>>> The hole guideline is for rf propagation via e field, not generally
>> what you would be doing.
>>>> the h-field (magnetic) isn't stopped by a mesh
>>>> 
>>>> The cage around a coil is more about stopping sparks.
>>> 
>>> The cage attenuates time varying magnetic fields too, because they
>> induce currents on it that generate opposite magnetic fields.
>>> Care must be taken on wires entering the cage. They shall pass through
>> filters, otherwise they works as antennas, and the cage then really serves
>> just to stop sparks. It is actually very difficult to make an effective
>> Faraday cage for this application. It would be simpler, and probably
>> equally effective, to just use something to impede people from getting too
>> close.
>>> 
>>> Antonio Carlos M. de Queiroz
>>> 
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