Ferrite toroid JT & magnet.

[TinselKoala]

I'm flabbergasted that a ferrite rod can actually be sold for that much, these days.

@synchro: thanks for the flowers! I haven't looked at Zaev's work in quite some time so I don't want to comment. I like and respect Jean-Louis and have shamelessly gotten several good ideas from him. I'm envious of his facilities and his funding, that is for sure. But I can't help but notice that all of the overunity devices he tests and reports on have power supplies or batteries.... no matter how great the COP is that he measures.
Now, personally, I believe that if I had on my bench a device that _actually_ put out six times -- or even three times -- as much electrical energy as it took to run, I could make it self-loop and run without any external power supply. But he's never shown such a device self-looped and neither has anyone else. (The closest is to have a device run off of a battery or capacitor that it has charged itself... which I have done.... but at efficiencies less than unity.)

No, I'm not going to be trying to replicate any of that stuff just now, but I am going to wind another secondary winding on the latest JT variant of mine, which uses a ferrite "bead", sort of like a cylinder, with the primary winding around the outside (instead of thru the hole like a toroid).

It is very tedious to do accurate power and energy measurements using my analog oscilloscope but it can be done. I have to photograph the screen showing a voltage and a current (voltage drop) trace, then digitally put a grid onto that image, manually read off and multiply the values to generate an instantaneous power curve, then integrate that using a numerical approximation. Remarkably, I can get to within 5 percent of what a DSO reports... but it takes me a couple of hours per measurement, whereas the DSO does it in milliseconds.

@Gyula: those prices are more like what I'd expect. 2 or 3 dollars for a 200 mm rod is reasonable. I hope gadgetmall hasn't already committed to the more expensive source.

[gadgetmall]

Actually i bought two of the exact 8 inch 5/8 rods and spent a ton of bucks . The permeability is a factor and if i am to replicate Ls 60 watt incandescent thingy i want to do it exactly like he is doing it . one cost 29 and the other 23. I saw those rods that were 10mm X 200mm and i said these are not what he used i saw them 8 for 33 bucks. i also see 5 different permeabilities  of those long fat rods .

I asked the seller why the heck are they so high and he told me they are very hard to get and he is running out and there will be no more . I don't know if you can tear a ham radio antenna Balun apart and get one or what but i have two fat expensive rods coming .I have yet to find his supplier on the net . If anyone buys those mm rods let us know if they light up a halogen bulb or light a filament on 1.2volts like saber did . I will have all the exact parts . I have three kinds of 2n3055 with different beta gains so its time to put it to rest . Ls seems to be magic with the jr1 .  lets see if it's magic with LS3

Gadget