Dissecting a NS coil after 165 days of operation.

http://www.youtube.com/watch?v=nRSZcQ5cGAQ

@ Lasersaber,

Thankyou for the Stubblefield Coil Pulldown download link.
I have taken a look, it's well done and very informative.

What really got my attention was your observation about the iron wires appeared to be thinning the deeper you got into the coil, maybe we need to use slightly thicker wires on the first 8-10 layers to combat this effect, until we can workout why it happens, but I suspect it is a galvanic process that is causing this.

Have you measured the distance the magnetic fields reach away from the coils when they are at full output?

I need to buy at least 20 -30 compass (or more) to setup a 360 magnetic field gauge to watch the magnetic fields in actual operation around this coil so I can understand it better. I will be able to see the whole picture in a single glance.


I 'm getting a voltage peak OC of 0.79 volts on my setup.

Very nice pulldown, you did very well explaining this .

jim

@all,

I'm going to attempt the 18 layer on my Stubblefield coil shortly, but first an update.

Last night I wound on layers 16 and 17, I wet the coil with close to 60Ml of rain water, and the LED came on, the coil voltage peaked at 0.83 volts, I connected the Joule Thief to the output wires and the LED lit up so bright, 12 hours later it is still lit up and it is still very bright.


Midway through layer 17, the ends appeared on my cotton winding strings, so I simply twisted the new ends of the new balls of string onto the old ends and kept winding. There was very little bunching, in fact the winds looked quite normal in profile.

Meter volt is 0.41v
Looking forward to seeing what happens next.

jim

Hi Jim nice work I notice you are using the JT in conjunction with your coil. My question is can you hook more than one led ,say two in parallel,or two in series,or hook your second JT in the return path to the coil ....not sure if you've treid these different arrangements or not.....would be interesting to know the results..........thanx ....shylo

Someone get a handle on Low Life louiseeverett! What a mentality this is!