TPU secret (steven mark)

[stprue]

Sounds like a great cct.  It's always gratifying when projects are actually usable for something.

[gadgetmall]

Exactly! My point on the Sm TPU is i saw nothing i could not replicate in a video with stuff from that era.. If the Bulbs were clear it would have made all the difference in his demo.and as far as scope shots ..well i do have a frequency / voltage gen close to a dual trace data scope.
I suppose i could wind another BIG ring i have . Its price was over 400 dollars but i got it free.. and run it with 3volts and use a hefty darlington pair , i bet i could light an incandescent 40 watt clear  bulb (fridge or oven light) BUT they take a whole lot of time and Patience .. Something i am running out of .

Also if you wanted to "trick" someone they make flat poly batteries now and inverters for your cig plug that are no bigger than the plug itself that can do that off 12 v you could take it apart and shape it in a big ring ... i don't really want to fake it. I would rather have what i have something useful . .

Gadget

[stprue]

$400 ring?  Is it a metglass or something?

[gadgetmall]

[quote author=stprue link=topic=12645.msg334244#msg334244 date=1346418014]
$400 ring?  Is it a metglass or something?

they came from  Magnetics  in Spain. i lost the specs in My move to new home but it was the highest perm they had ..not sure ..Heres a pic compared to the one i used inside of it and a little famous 5 for a dollar  goldmine in the center . I do remember i had all of them except one annealed and coated if that means anything . My memory is not that great and they have been stored for years until  now.

Gadget

[stprue]

Wow, those are nice looking.  Have you wound them with litz yet?  I wish I had one of those for my V8carlo replication!  I will be using one of the old large cores used in the jeanna light.