Self running coil?

[Magluvin]

Hey Wings

Thanks for the info and vid.

Was at lunch earlier and didnt have time to go over them.

Good stuff
;]

Mags

[Peanutbutter29]

Not sure if this is the best place to post, and I don't want to double post anything;  but these experiments from Gotoluc led me to this.  Also, I thought maybe some the interesting aspects may help here;  I dunno.

I have to flat wound coils from my old Spellman HV that didn't work.  There were 4 of these HV coil stacks pulsing at 20Khz and outputting 60kv @ .50ma each.  This was then filtered and multiplied with a Cap Diode (Marx) stack to 180kvDC.  I show the primary and a crappy drawing of how the coils were layered.  I assume some have seen this design before.  At, any rate;  I used 2 layers from the HV side.  They each showed around 73ohms.  The wire is 6-8 strand litz woven and the Coil is woven when wrapped!!  I just got a well needed meter so I'll get Inductance values for the various wirings.  Being flat and separate allowed me to test, tesla pancake, Bifilar, and Opposing winds as you did here.  I figured, not having a core;  it would be curious if a similar effect could be found.  (course smaller). I would not know how many turns are in one layer, but I would guess a couple thousand. 

EDIT:  I check the Inductance with a Amprobe 37XR-A (not the most accurate and I assume a 1khz pulse for Inductance test).  Any way, sitting as connected in video (disconnected from circuit).  I show 9mH for each coil (9.04);  when I test across the ends (white and yellow) I show 33.34mh !  Seems like this could work then?


At any rate, the video shows running of it.  The odd things are; decent low startup with no core,  led continually getting brighter rather than a typical JT cap (below led conduction) and it will run (reducing power) and control the led well above rated input?  It seems to run the LED at rated brightness for 1/2 the power?? 
  Maybe something similar to what you had noticed?  Also,this made me wonder if you could use a JT like circuit to collect the (T2) power for feeding the Mosfet? Maybe you'd still get a little charge back to your main caps?

I do have some thoughts on where this apparent "extra" may be generated, but that's another post, lol.  Just wanted to add here, another oddity from using "bucking" or opposing wind coil halves. 

Video of JT http://www.youtube.com/watch?v=wTvnL2HMVow&context=C4c1290aADvjVQa1PpcFPFfx6ZklIUC1rsLOrQVBXU4ajj1gGHw24=

Thanks and good work again with all your videos!



Pic I tried to get a close up of one of the Layer winds for wire used.  This is another one of the "layers" but still same HV Litz, etc.  You can see a couple single strands in the top left;  these have 6-8 strands in them!  Also you can see the "weave" to how the single wire was wound inward; very cool!