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

Body

Warren,

Unfortunately I have to leave my lab for a few months so not sure I can
finish this latest module I have on the bench with all the other tasks
necessary to complete.  But intent is a very fast optically decoupled
gate driver that can accomplish what you requested earlier, a unit one
can connect to the TTL out from a cheap digital function generator or
timer, microprocessor etc and use to switch some larger current and
voltage into coils without worries of damage.  I am thinking along the
modular lines of the Arduino crowd, little modules for energy
experimenters like us that ideally could be cobbled together into half
and full bridges also.  Even though more useful components could share
each board I think this simple module concept might be more robust and
user friendly and easier to repair for sure.
I also intend that the output can be  matched to drive vacuum tube grids
too. 

That's my answer...  Winter is a great time when it's too cold to go out
for the electronics bench.

On 11/27/2018 11:27 AM, Warren Keillor [email protected]
[EVGRAY] wrote:
>  
>
> Mike
>
> Roger that! Give me components that fit the hand, and can even be
> harmlessly soldered with a soldering gun ha,ha! I love those bakelite
> terminal strips, all open, and very connectable, just drop a diode
> across twhathe lugs and solder away, another high voltage, high
> current bridge presto.
> Now we have the gubbins, lets get building.....oh....what are we building?
> Cheers Warren
>
> Sent from Yahoo Mail on Android
> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature>
>
>     On Tue, 27 Nov 2018 at 1:49 PM, Mick [email protected] [EVGRAY]
>     <[email protected]> wrote:
>      
>
>     Warren,
>
>     Hahah ant turds...  I know these are great for assembly line, RF
>     and high speed switching allowing for the close spacing but I
>     really don't enjoy working with this technology either
>     troubleshooting or building it.  Give me DIP with pins that go
>     through holes and need to be snipped, call us old fashioned right! 
>     I want some big parts that can fit in a mans hands and can
>     dissipate heat and are easy to find when knocked off the workbench
>     and don't get lost under fingernails.
>
>
>     On 11/27/2018 7:10 AM, Warren Keillor
>     [email protected]
>     <mailto:[email protected]> [EVGRAY] wrote:
>>      
>>
>>     Norman
>>
>>     Thank you for a clear understanding, and communication of arc
>>     plasma spikes, and moving us on to embracing them, rather than
>>     traditionally considering them the enemy of fragile electronic
>>     circuits.
>>     It is now about establishing a practical frequency, that is both
>>     useful yet within fairly humble resource demands.
>>     I embrace mechanical solutions, as something I can certainly
>>     achieve, given a reasonable machine shop.
>>     Oh, I can tough it out, populating a circuit, with discrete
>>     components, and even surface mount tiny ant turds, given a broad
>>     field microscope,, but it is not fun, or gratifying, like nice
>>     machinery
>>     Speaking of black smith anvils, I am on the lookout for a nice
>>     old one.
>>     Every one that I have looked at around here tends to be pricey,
>>     around$1,000 Canadian, or at least $10./ lb
>>     I have a rather nice sized forge that burns bituminous coal, and
>>     a proper space to set it up. I can do nice wrought iron work, but
>>     have always used oxyacetelene, which is too expensive, and not
>>     handy for big things.
>>     A walloping big anvil is a joy to use, turning steel into
>>     plasticine, for shaping. Too bad shipping is such a bitch,
>>     because somebody, somewhere, has a toe stubber out there.
>>     Cheers Warren
>>     Sent from Yahoo Mail on Android
>>     <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature>
>>
>>         On Tue, 27 Nov 2018 at 5:13 AM, Norman Wootan [email protected]
>>         <mailto:[email protected]> [EVGRAY]
>>         <[email protected]> <mailto:[email protected]> 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]
>>         <mailto:[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]
>>>         <mailto:[email protected]>, <mkjekyll@...>
>>>         <mailto: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.
>>>>>
>