The Master Of Magnetics "Steven Mark"

[gn0stik]

Again: Steven is telling us in the video, that HE IS USING  BAILING (IRON) WIRE,
so don?t confuse other people by telling, he is not using it, please !

Who the heck are you talking to? Nobody is saying that he's not as far as I can tell, but if people want to theorize, let them. Steven simply said he used bailing wire on his FIRST PROTOTYPE. That's all. He hasn't said one way or the other whether it's a required component or not. So there's room to theorize. But if other people want to wind some coils and test other theories... .That's thier business.

In case you didn't notice that quote from liberty is from a while ago.

[bob.diroto]

Remember that conductivity and resisitivity are inverses of eachother, so: coductivity = (1 / resistivity)
So, here is the equation for calculating the relaxation times...
T = ( (8.854x10^-12) / (conductivity of said metal) ),(T is the relaxation time in seconds)
.
.

REMEMBER that for a KICK GENERATING WIRE we want it to have the LONGEST RELAXATION TIME. So "Times slower than Copper's relaxation time" refers to how many times longer a given metal's relaxation time is then Copper.

Logically I think the following is true ?

1. It would follow that we need to get maximum voltage on the kick generating wire within the relaxation time ? If peak volts is 20,000V but we only get to 2000V before the relaxation time expires then this reduces the kick effect ?

2. If therefore follows that we need very high rise times when applying the high voltage ?

3. If we can't get high rise times we need even higher voltage to compensate ?

4. Even with iron/steel we're looking relaxation of 10 exp -17 and rise times of this small magnitude ?

5. Can semiconductors even switch on at this speed ?

6. Alternatives to semiconductor are:

6a. Physical commutator action should give an almost instant rise time ?
6b. Capacitor dumping over spark-gap gives almost instant rise time ?
6c. Electron tubes, thyratrons and the like. This would explain why Steven Mark said he had his first break through when using electron tubes.

[gn0stik]

You are dead right bob. Some other things to consider follow.

Thermal properties and area of conductor are also factors in figuring out resisivity and conductivity.

For example the conductivity of a 25 awg iron wire at 25 degrees c is lower than at say 22 degrees.
in other words a specific diameter wire has better conductivity at lower a temperature.
Hence superconductors needing to be frozen. (I wonder what a superconductor's relaxation time is)

Likewise the conductivity of a 22awg wire at 22 degrees celcius is higher than a 25awg wire at that temperature.
in other words a thicker diameter wire has better conductivity at a given temperature.

I assume all of those measurements in the excel file were taken with a given area (length and gauge) and at a given temperature.

Also, the stainless steel wire will have a different gauging system, the steel industry uses mwg (musical wire gauge) instead of awg.

There are other factors to consider as well.
Resistance is the act of a conductor throwing off electrons due to inconsistencies in the atomic lattice. Right?
Well if the Iron wire is chosen for it's resistance and long relax time, as opposed to its conductance and long relax time. What would you have? You'd have electrons "jumping to the larger wire" wouldn't you? This would be in combination with the inductance in the adjacent coils.

Of particular interest for this scenario are Iron, due to the high resistance (electrons jumping ship)and long relax time.


On the other hand it would seem that a fast rise time is necceary for switching and electronic components unless we go old school so you might want low resistivity, and high conductance with a long relax time. In this case you have high inductance in the adjacent coils. And less electrons jumping to the larger wire.

Of particular interest for this scenario in looking at these charts was stainless 330, and iron ingot. As well as the FeNi alloy.
Very low resistance, high conductivity(fast rise time), and LONG relaxation time. These would seem to be ideal for the purpose to me for this scenario. Perhaps too much so. It might get hot too fast.
But then again, the hotter it gets the lower it's conductivity, and higher it's resistance, so it might be that we can find an alloy that reaches a balance once it's warmed up.

One choice creates more inductance and less "jumping ship" and the other creates more "jumping ship" and less inductance. The question is, are they the direct inverse of the other. And which one serves our purpose better.

[bob.diroto]

There are other factors to consider as well.
Resistance is the act of a conductor throwing off electrons due to inconsistencies in the atomic lattice. Right?
Well if the Iron wire is chosen for it's resistance and long relax time, as opposed to its conductance and long relax time. What would you have? You'd have electrons "jumping to the larger wire" wouldn't you? This would be in combination with the inductance in the adjacent coils.

Of particular interest for this scenario are Iron, due to the high resistance (electrons jumping ship)and long relax time.

My understanding is that conductance is reciprocal to resistance and that relaxation time is inversely proportional to conductance. Therefore I don't think it's possible to have high conductance and long relaxation times as higher conductance would mean shorter relaxation times.

[bob.diroto]

On the other hand it would seem that a fast rise time is necceary for switching and electronic components unless we go old school so you might want low resistivity, and high conductance with a long relax time. In this case you have high inductance in the adjacent coils. And less electrons jumping to the larger wire.

My thinking was that a high rise time is necessary in order to get the potential (volts) as high as possible on to the wire, before the wire actually started conducting. The relaxation time being the time between the start of applying the potential and electrons creating a current.

It would be nice to know if the transition is abrupt or whether the appearance of current in the circuit also has a rise time after the relaxation time is up. It could be the case that we have substantially longer than the relaxation time in order to get the full potential applied across the circuit.

A fast (nano second) rise time is not a prerequisite for switching and electronic components. In electronic circuits a fast rise time is nice if you are triggering off the leading edge but not essential. The rise time just has to be proportional to the rate at which you need to process the information.

However, thinking about this, the voltage rise time quoted for semiconductor switches might be a function of the initial current flow through the semiconductor (I'm not talking about the triggering voltage/current here) and that the 'potential' actually appears on the wire much faster ? Or is this total crap ?!!