Joule Lamp

[lasersaber]

Has anyone tried filling up one of those aircores with stacked power toroids?
The ones I have will fit nicely in 1" CPVC pipe. That pipe will be wrapped with
the secondary and some sort of 'adjustable' primary most likely.

I have tried that and it works great. That is how I made the coil in this video: http://www.youtube.com/watch?v=bkZKD7LHCzM

I have not given up on the air core coils yet. I have seen some very promising effects with them.

[lasersaber]

Posted twice.

[PhiChaser]

     I think what this will all boil down to is using ferrite, as we had thought. But, PVC and insulated house wire is available anywhere, sometimes even for free, or nearly so.

   Phi:  Toroid cores are not all the same, and the cheap iron powder toroids that are commonly used as chokes, don't work very well. Maybe try to find a ferrite transformer, or some real ferrite toroid cores, or beads. But, the Lynx system will work even without the ferrite rod, or toroids, in anycase, but,  even the yellow iron powder toroid cores may help some.

   NickZ
 

This is what I will be using. They were about a quarter each on eBay (not including shipping):

SANLIN SL5 T22X14X8 - CORE MATERIAL TYPE: SL5 - EQUIV TO FERROXCUBE 3E4, TDK H5B AND SIEMANS EPCOS T65 (They are a nice blue color )

PC

[PhiChaser]

      I think what this will all boil down to is using ferrite, as we had thought. But, PVC and insulated house wire is available anywhere, sometimes even for free, or nearly so.

   Phi:  Toroid cores are not all the same, and the cheap iron powder toroids that are commonly used as chokes, don't work very well. Maybe try to find a ferrite transformer, or some real ferrite toroid cores, or beads. But, the Lynx system will work even without the ferrite rod, or toroids, in anycase, but,  even the yellow iron powder toroid cores may help some.

   NickZ

Nick: This is what I will be using: SANLIN SL5 T22X14X8 - CORE MATERIAL TYPE: SL5 - EQUIV TO FERROXCUBE 3E4, TDK H5B AND SIEMANS EPCOS T65
They cost about a quarter each on eBay and are a nice blue color .
PC

EDIT: Damn forum, sorry for the double post... Thought the last one didn't go through. 

[Lynxsteam]

My goal in using the JR 2.0 circuit design with the Aircore coil was to design something anyone could make easily from a kit or scraps.  getting performance up to the E-Core level is daunting.  At some point it seems if we want E-Core like performance that is the way to go.  But if there is still a way to get performance with an Aircore and no added components, that would be great.

I wound a test Aircore coil today on the 3/4" PVC - 9" long length.  It is comprised of a full layer of 24 awg enameled floral wire (soft iron).  A layer of clear plastic tape, then a full 200 turn layer of 20 awg copper magnet wire, then a layer of clear plastic tape, and another 200 turn layer of 20 awg copper magnet wire, then a layer of 14 awg insulated electrical wire 70 turns.

I can configure this in a bunch of ways.  Three secondaries in series or parallel, Tesla parallel, and/or leave the iron wire out of the secondary circuit.  I have read in Laser Saber and Lidmotor postings they observe some really "interesting" effects with the iron floral wire.  I don't know what to expect, or if these "interesting" things are good or bad.

A coil of iron wire seems like a strange way to increase Induction in the secondary.  Not only will each iron loop reorient magnetically but it will also have a current induced along its length.  Iron is fairly resistive compared to copper so I am not sure how well this would work in the circuit.  If it is left out of the circuit the AC will just oscillate.

My hypothesis is that induction in the secondary will increase over a purely Aircore type and the coil will still self tune to resonance at varying loads.  I'll let you know what happens.