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Registered Member #58454
Joined: Thu Feb 18 2016, 06:33AM
Location:
Posts: 23
Patrick wrote ...
how much power do you need, and at how many volts ? and specifically how are you using this lifter ? is it tethered ?
this transformer is specifically meant for my lifter research: these are planar high frequency transformers, specifically meant for high power. Fully engineered and made by me.
I 3D printed a special bobbin after detailed FEA field strength analysis of the cross section.
The red part is wet wound epoxy to create a voidless secondary. there are 100 turns under there. this transformer isnt fully tested but reaches 7.5kv, its meant in its finished form to be 21-25kv, with advanced features, modulation, current limit and secondary side regulation. its far lighter and is scary powerful than any other bare transformer ive seen or made. with the right circuit board this beats whats your asking for.
Scalability favors larger power supplies and disfavors smaller ones like a wall-wart. packing efficiency being one problem of many.
Thanks for that. I'm thinking of the lifters like those shown on this page:
The usual triangular-shaped one there gets 15 grams-force thrust at 14 watts of power. This one needed 54 kV, but probably any voltage range at tens of thousands of volts would be adequate.
What's the power to weight range for your air core transformer?
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
I dont build air core transformers, that bobbin goes inside those ferrite cores. its a normal ferrite core transformer.
as for the lifters, you want the shortest distance between the collector and emitter, thats exponential. you want the highest voltage possible without sparking or arcing, thats exponential too. you want the sharpest - highest field intensity possible from the emitter, and the bluntest lowest field intensity from the collector. any "counter current" from the collector is bad.
these affect the over all lift capabilities of any lifter, from blaze, jln or anyone else. Moving oil or air is similar in concept, were using non conductive fluids to cause motion.
The piece of aluminum is an airfoil shape, with the blunt end facing those copper points.
you can look at some of my oil work here (54kV) :
heres a flyback ive been using, an oscillogram showing a pink trace at 46kV.
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Can staged voltage multipliers be multipliplicative instead of additive?
