Stubblefield coils (bifilar) and speculations

[Pirate88179]

@ Jeanna and all:

Welcome back!

I hope I am not repeating myself which is entirely possibly.  On one of the topics here, I can't recall which at this time, Stefan was describing a spark gap to use with 1 vdc made from two sharpened graphite rods (pencil points) placed about .001" apart or so.  You have to make it adjustable to get the correct gap. (One that works is the correct gap)  Someone on that topic made one and posted a picture.  I will try to hunt it up soon.

Having said that, I too am not a fan of the spark gap from what I have read.  Much better to have a controllable make/break, especially one that easily allows variable frequency changes.  We don't really know that Stubblefield did not do that.  I don't think he was making enough power to operate what would have passed for a relay in those days.  We all now have relays in our cars operating on 12 volts, and probably would work on less.  There are probably efficient relays out there designed to work in our ranges. (Hopefully)

I still like Joe's idea of the separate tiny motor powered by a different source, to turn a make/break system.  If I had a few more bucks, I would be playing with that as we speak.

Bill

[jeanna]

Hi Bill,

Please hunt that down. I sort of remember it but...

The question of what frequency to impose on a coil arises when it is not the one that comes naturally from the coil's own turns.

If the galvanic reaction causes an electro magnetic effect that could cause a spark to discharge It would do it at the coil's natural frequency, I should think. And that would be the most effective frequency, the resonant one.

I don't know this, it just seems right to me. I am hunting more for ways to tell what I have. I guess that is the reason I like Barry's coil gun site with the java applet with the sliders - I can match the curve to mine and look at it better.

I am definitely watching the relay idea. As much to learn how to install a relay as anything else.

Every time I find myself in a hardware store I look for screw type devices that would hold a spark gap like the old ones. Maybe I should go to an automotive store. mmm

I look forward to seeing a spark motor. I still haven't got my copper propellor on the CD motor to work on a NS coil. not yet.

jeanna

[Pardon]

i made a second stubblefield coil, the first one failed and was taken apart. this one is wrapped around a 3/8 bolt X 6 in long bolt. it has a plastic cap and end piece. the wires are insulated from the bolt with a rubber hose. it has 10 coil pair per row and 6 levels. totaling about 23 feet of 18 gauge wire. the copper wire is insulated from the iron wire. no secondary at this time

testing with the coil just wet i get .45 vdc and 200 ma.  i am very happy with those numbers. i will plant it sometime soon as it is now.

when i was testing this coil i tried something else. i took my APM circuit and added a diode to the output. so the volts would stay up longer. and then took the other side of the diode and connected it the 5 on the stub coil. and checked voltages quickly as the voltage was dropping. i measured the 5 and 6 plus the bolt. then the 10's  i used the APM circuit as the ground. i read almost the same voltage on all connections and that was about 53 volts and dropping.

what i am getting at is this tested just like a car coil. but what i didn't get was the bolt also having a voltage present. it is totally insulated from the wires. BTW the ma's jumped up to 800 ma's on the 5 and 6. no other connections were checked for ma's just needed more time with a higher voltage. the APM could not have added the ma's because it's not in that circuit. but the circuit was supplying that voltage level.

[mthompson]

mthompson quoted something I have not actually seen in the patent.
I wonder where that came from. The brochure? Is it out there somewhere?

My apologies to all; jeanna, you are absolutely correct, the following was not a quote from Stubblefield. This is actually a reference note to myself which was preceded by quotes from Stubblefield's battery patent. Thanks for catching it. While I still think it is a good description of the possible circuitry within the Stubblefield battery, he most definitely did not make this statement and I'm pretty embarrassed I claimed he did. mea culpa..

"By connecting the #5 and #6 ends of the iron and copper wires through a Make and Break device, and directly connecting the #10 iron and copper ends, a closed curcuit is created through which the current can flow, creating the electromagnetic field, and allowing for the powering of a secondary coil, the electrical output of which can be tailored to need by its construction."

[Pirate88179]

@ Pardon:

800 mA's?  Wow, that is a record for us.  I have to ask...are you sure? (sorry)  That is almost 1 amp which is fantastic.  Great work.  Can you post pictures for us?  This would be good to see before you "plant" it in the ground.  This gives me hope.  Excellent.

Bill