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Re: EMP => PULSED PHONE DESTRUCTION!

to: Sam

Your very low inductance of the leads and very low circuit resistance
caused the sharp EMF.  Tesla oscillator pri circuits operate into an
average load of 40 Ohms and do not see the load of 0.5 Ohms or less as you
would in your experiment.  As a precaution though, we always shut off any
wireless phones or tv sets prior to firing the oscillator.

DR.RESONANCE-at-next-wave-dot-net

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> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: EMP => PULSED PHONE DESTRUCTION!
> Date: Wednesday, September 09, 1998 12:12 PM
> 
> Original Poster: "Sam Barros" <sambarros-at-hotmail-dot-com> 
> 
>   Hi, everybody, check this out:
> 
> 
>  Yesterday I connected 2 capacitors, rated for 2500V, 1.1uF, in parallel 
> to my 2300V, 0.5A microwave oven transformer. I connected their outputs 
> to a home made spark gap that consisted of 2 very large steel bolts 
> mounted on an insulated metal base. The capacitors take a fraction of a 
> second to charge up and their discharge makes an almost continuous arc, 
> that sounds like a 747 taking off (that thing is LOUD!!!). They'll melt 
> and vaporise anything, and are as bright as an arc welder.
>  Anyway, buy spacing the gap to about 2.5mm, I could get the gap to fire 
> only once, when I flipped the switch. It sounded like a rifle going off. 
> A LOUD, dry sound, that could be heard echoing away like thunder.
>  Well, to make a long story short (I'll not go into details on how you 
> can use this to turn worms into fireworks or explode water and thin 
> wire), I got a call from a friend in my cordless phone. In the middle of 
> the conversation I said: "Hey, Listen to this!" I put my earmuffs on, 
> placed the phone 20cm from the gap (a little more than half a foot 
> distance), and fired it dry. There was the loud noise. I took the 
> earmuffs off and said: "So, what do you think"? There was no reply. The 
> phone was permanently destroyed by electromagnetic pulses that induced 
> high currents on its circuits and fried the chips.
>  I must admit that it was quite a stupid experiment, and I knew the 
> potential danger of EMP. But I never expected it to be THAT powerful.
>  I found out that if a different phone is moved away to, say 1 or 2 
> meters, it will automatically shut down when the gap is fired. At 4/5 
> meters it will make static noises and the interference stops at 10 
> meters or so.
>  Since Tesla Coils use a circuit very similar to this one (discharging 
> large capacitors trough spark gaps), they should have similar effects. I 
> have never seeing any mention of this anywhere, but perhaps the 
> interference produced by TCs is due to their spark gaps, not the 
> secondary. I am sure at least some of it is...Perhaps shielding the 
> spark gap with metal would reduce the interference produced by the Coil. 
> Has anyone ever tried this???
>  Give me your thoughts on that...
> 
>  Sam.
> 
>  P.S. You can use solar panels to detect EMP...
> 
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