No doubt the Earths field is always there. The coil when energized will change the Earths magnetic field somewhat thats in close proximity to the coil.
I think I see what your saying about the Earths magnetic field helping to cause bemf. The collapse of the coil cores magnetic field induces a current into the wire which simultaneously creates a magnetic field and radiant energy {dc only} in the wire,which then interacts with the earths steady magnetic field. From what Ive read,radiant energy in a wire can only be created by a pulsed dc current and thats when the current is first turned on. This all seems to revert back to the Earths iron core.

@jeanna

Making a copy for me is out of the question those wire are quite high for me and most , Laser saber made one with copper iron and one with aluminum copper , both work the voltage shown and exactly spot on for the galvanic pair . This shows me that the wire doesn't have to be iron , but would iron be better for the secondary that is the question .

So i choose to go with what i know for sure , and build on it without searching for magical current the basic concept is quite interesting as his .

Unless i don't believe that lasersaber did do it , to me it is solved , and the best part he just fallowed the directions carefully without inputting his own bias , and got it to work ...

My point is the patent clearly state the use of galvanic , and the patent is for a battery that is an electromagnet at the same time .

Electromagnets you can't get more basic then that .

But i get the idea that he switch it with 2 spark gap and a cap.

Anyway i should be able to show it soon.



 

Quote from: Mk1 on May 17, 2010, 10:38:07 PM
...


My point is the patent clearly state the use of galvanic , and the patent is for a battery that is an electromagnet at the same time .

Electromagnets you can't get more basic then that .

But i get the idea that he switch it with 2 spark gap and a cap.

Anyway i should be able to show it soon.

I hope you can show this soon. I will enjoy seeing this.
I have said this for a while that those silver globes on the tops of the coils were for sparks to gap.
But when laser made his I decided to replicate it.

Thank you.

jeanna

?

@Restron,

Welcome to the forum.
What a plesant surprise this is, I see you have found a twin stubblefield coil drawing assembly, well done, I had no idea this was in existance.
May I ask if you have anymore of these drawings around? Where did you find it?
I think you will be asked quite a few questions from the other forum members also.



@all

I have begun making a machine to wind cotton thread onto a bare copper wire, had a lot of fun today and more fun tomorrow.

jim