Re: Neutral Spike Re: [EVGRAY] Vehicle audio - Wikipedia

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http://www.glvac.com/Product.asp

On 11/27/2018 4:13 AM, Norman Wootan wrote:
>
> PLEASE, all, we are trying to enhance,purposely provoke and attempt to 
> capture the event, NOT mitigate or prevent it from happening.   In all 
> of the studies of the Ferroresonant phenomenon, all effort is to 
> prevent, mitigate the effects.  Why do you insist on using solid state 
> devices or circuits which need protection.  Just like the Russians who 
> still use mini vacuum tubes in critical EMP vulnerable aviation 
> equipment, I would fall back to using the trusted Vacuum Thyratron 
> https://en.wikipedia.org/wiki/Thyratron 
> https://dbtubes.com/en/thyratron-vacuum-tube/ This whole Neutral Spike 
> (EMP event) study is to prove that an extra ordinary form of energy is 
> manifest at the point of magnetic flux annihilation (In the plasma of 
> the arc).  It is called the reconnect phase. The preponderance of the 
> knowledge of this subject has been the study of the magnetic ropes 
> (plasma) of the sun and the EMP burst from the annihilation/reconnect 
> phenomenon. The old saying, As above so below certainly applies here 
> for these plasma conditions have been accomplished in research labs to 
> prove out exactly what happens.  Run with what we have learned by 
> applying the info in your device design and methodology.   As strong 
> as a blacksmith anvil.
>
> On 11/26/2018 7:21 PM, [email protected] [EVGRAY] wrote:
>>
>> Hi Mick,
>>
>> TVS diodes are rated for some max power dissipation and perhaps some 
>> max energy too (fusing energy I^2t). If applying more energy than the 
>> max i^2t rating it melts. As being fast Zener diodes they clamp the 
>> voltage at some level while having current through them at the same 
>> time which means power dissipation in them. If reading EMC (EMI) 
>> theory several stages are needed to protect for powerful EMP 
>> transients. The first step is a spark gap. The spark gap is followed 
>> by a varistor that is followed by a TVS or Zener diode. The spark gap 
>> breaks down to low impedance which reflects or dissipates much of the 
>> energy of the signal. The varistor is a solid state spark in some 
>> metal grains and has the same purpose as the spark gap. the TVS or 
>> Zener diode stage removes the rest of the energy to protect the 
>> sensitive electronics. It is essential to know how the 
>> electromagnetic radiation is transferred between the different stages 
>> to prevent it from reaching the sensitive electronics. Every current 
>> loop transmits the energy as a very penetrating magnetic field. That 
>> magnetic energy has to be dissipated or reflected which can be done 
>> with electrical conductive materials like iron or aluminum. The field 
>> induces current in the screening material which requires only 
>> connecting the circuit inside the screen to a single point. Audio 
>> guys probably have experienced this when building amplifiers.
>>
>> A thyristor (SCR) crowbar is also a good protection. It shorts the 
>> pulse just like a spark gap and then blows a fuse to disconnect the 
>> circuit to be protected..
>>
>> Regards
>> Ole
>>
>>
>>
>> ---In [email protected], <mkjekyll@...> wrote :
>>
>> Hi Norm,
>>
>> This paper is one of your excellent references.
>>
>> I would like to replicate the events through the plasma that I 
>> achieved as it creates a huge magnetic pulse that can be harvested 
>> but as you say gets to kill the solid state stuff as if the TVS 
>> diodes were not even there. At least the ferroresonant amplification 
>> without the plasma gap just cooks the TVS diodes like popcorn even 
>> though rated at 1000 amps with only about 2 amp 23v input, but spared 
>> the rest, I guess it chose at the diodes to manifest. Oh yeah the 
>> ferrotranny was connected with 30 guage wire wrap wire when the 1000 
>> amps TVS diodes exploded from 46w and wire was fine. Have not built 
>> the tube circuits yet just working on the solid state grid control 
>> circuits first then plan to decouple with something similar to 
>> cascode so hopefully the superfast gate driver does not cook.
>>
>> Not sure if Ole's snubber network would stop the event but have the 
>> feeling so since caps will suppress the rise time and kill ringing, 
>> but have not tried so can't say.  Seems to me the event is created 
>> right at the switch and the rise in voltage is like the inertia x 
>> acceleration before the end of a whip cracks and necessary.
>>
>>
>> "Why does death need time?  Death needs time for what it kills to 
>> grow in."
>>
>>
>> On 11/26/2018 4:44 AM, Norman Wootan nwootan@... <mailto:nwootan@...> 
>> [EVGRAY] wrote:
>>
>>>     Precisely, Bob Paddock.  Please read this document to understand
>>>     that a local plasma event must occur (Arc in the gap) for the
>>>     manifestation of this energy. Please read:
>>>     http://www-brs.ub.ruhr-uni-bochum.de/netahtml/HSS/Diss/TassiEmanuele/diss.pdf
>>>
>>>     On 11/25/2018 7:36 PM, Bob Paddock bob.paddock@...
>>>     <mailto:bob.paddock@...> [EVGRAY] wrote:
>>>>
>>>>     > Why not replace the relay with a switching transistor. Mechanical switches wear fast compared
>>>>     to a semiconductor switch.
>>>>
>>>>     What if the Arc/Spark is part of the actual process in getting
>>>>     more energy?
>>>>
>>>>     Every O/U thing I've ever though worked usually had a Plasm or
>>>>     Arc/Spark.
>>>>     Usually not intentionally and the designer always wanted to get
>>>>     rid of it.
>>>>
>>