@ Chad
Bill is right abot the number of coils and about the size of the wires on the primary. If i remember the Stubblefield patent shows maybe 5 layers on his primary although that doesn't  mean that that is the only nuber of layer that can be used. The more layers on your secondary you have the better as well as using smaller wire on it too.
Sid

Quote from: sid10 on February 07, 2008, 03:11:36 PM
@ Chad
Bill is right abot the number of coils and about the size of the wires on the primary. If i remember the Stubblefield patent shows maybe 5 layers on his primary although that doesn't  mean that that is the only nuber of layer that can be used. The more layers on your secondary you have the better as well as using smaller wire on it too.
Sid

The way I read this, the number of windings and the size of the wire are only relevant in relation to the capacity of the device to generate the field strength. It will function with any number of turns according to the patent.

Hans von Lieven

Well well,
In my innocence about winding coils and in spite of watching Don Adsitt's how-to on windings, I somehow got the idea that the bifilar coils were to be wound in alternate directions. top to bot then bot to top. So, in alarm, after reading the post that says "then back to the top then down again, I looked very closely at the pictures.

Please look at fig 1 and 3 of the patent. the top row of wires is very clearly showing that they come off from the top and extend upwards. This can only mean that they were wound from the bottom to the top at least on the last row.

Perhaps I was wrong or perhaps my innocence stumbled upon something??

I am after all getting those interesting magnet compass readings.

jeanna

@ Jeanna,

There are a number of ways to wind a coil. The conventional way is to wind a layer forward and the next layer back in even spacings, normally side by side. The next is to wind one layer forward, then bring the wire back in a single turn to the starting point and the next layer is wound in the same direction as the first. Some people claim you get a stronger magnetic field this way. Then there is scramble wound which winds the coil in an irregular haphazard fashion. A true bifilar coil a la Tesla has two wires parallel, connected in such a way as to have opposing current flow through the wire. Stubblefield's coil is conventionally wound with two wires of different metals instead of one. It is NOT what Tesla would have called a true bifilar coil. This is a very unusual arrangement on which no real data can be found.

I think that Stubblefield tried initially to build a galvanic element of some strength with minimum volume. Instead of having large plates he chose to put two dissimilar wires wound next to each other in the form of a coil thereby getting a large area of galvanic interaction in a small package.

He then found that a coil wound in such a way displayed unusual properties that no other coil had.

I do not believe the galvanic action to be the cause of this unusual behaviour. If you send electric current down a wire you automatically get a magnetic field surrounding the wire. If that current is pulsed you have a rapidly changing magnetic field. Any iron wire next to it would have to react to this field in some way. Combine this with an iron core inside the coil and you would have to wind up with a complex magnetic field about which we know little since no-one else has really been doing this sort of thing. We need to find out what the properties of this field are if we wish to progress beyond where we are now.

But this is only my think, I am not an electronics engineer. Having said this I have not found an electronics engineer that can tell me what the behaviour of such a field would be, they simply don't know, so I might not be all that handicapped with my incomplete knowledge of electrical and magnetic phenomena. There is something of interest to discover here of that I am convinced.

Hans von Lieven

@ Hans

You bring up a very interesting point.  I think that can be interpreted two ways, id like to know your thoughts on this. Here goes

1) "and it will of course be understood that there may be any number of separate coils or layers of the wires according to the required size and capacity of the battery"         

You wrote- "The way I read this, the number of windings and the size of the wire are only relevant in relation to the capacity of the device to generate the field strength"
  I agree only half with this statement it can be seen two ways.  In the case of the self sustaining electromagnet- i agree completely that the size of the primary is directly coorlitaed to the field strength        induced in the central bolt. that makes complete sense. But here comes the other side of the coin

2) "and it will of course be understood that there may be any number of separate coils or layers of the wires according to the required size and capacity of the battery"

Now in the case of the Self generating induction coil / battery  I take that to mean something completely different

Required size may be just what it sounds like/physical dimensions whether big or small for where the battery is to be placed.
Capacity of the battery-  meaning capable to support the load its going to be used for.. so say a double a battery as opposed to a d cell both 1.5 v but much larger current in the latter

Now Those Two phrases have very special meaning when we take into account that there is a timing mechanism which determines the ac freq output on the secondary.   

Now in laymans terms ..I Take that sentence to mean the lengths of wire you use in the primary will determine how fast the vibrating timing mechanism turns on and off.. The primary coil is a capacitor  that gets fired at a self timed rate determied by the length of wires used in the primary.  The speed at which that happens determins the output on the secondary. So if depending on the load your going to use.. a different ammt of wire in the primary will affect the output. 
                                tell me what you make of this hans and all                                     In the end the goal should be to drive the secondary at resonance..  this should get interesting
                                                                                            Joe

@hans

edit you must have posted while i was writing

you wrote "I think that Stubblefield tried initially to build a galvanic element of some strength with minimum volume. Instead of having large plates he chose to put two dissimilar wires wound next to each other in the form of a coil thereby getting a large area of galvanic interaction in a small package."
The key here is that This primary coil is a capacitor in the induction coil -

This is backed up by all of our meter readings so far.. why would the amperage drop at a fast rate and then be completely restored every time i would take a probe lead off one of the wires and put it back on.. its recharging itself in an instant.   I think he designed the primary like this maybe knowing it wasn't the most efficient process to get the auto magnifying voltage effect tesla went for but that it would work reliably if built properly and could easily be configured into the self generating battery or another device for telecom use -the electromagnet.  That would make sense for a inventor looking to get into the game and show the many benefits of his product.. i kinda got that feeling through the whole patent.