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How do they make this?

Since we are into tesla

http://www.flyte.se/

Can you theorize how they do this ?

Maybe there is a motor inside...

Picture of How do they make this?
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Nighter3D1 year ago

A good set of well controlled magnets (probably constantly tuned by a microprocessor) can handle the levitation and the use of induction (same technology used to wirelessly charge phones) can transfer enough energy wirelesly to light the Leds within the bulb.

iceng (author)  Nighter3D1 year ago

From the video there are obvious strong magnets in addition to the supposed_Up as can be seen when power is pulled there is turned off or when poorly aligned.

The air core transformer perhaps resonant action to light the LEDs is not difficult portion design and make.

What boggles me is the distribution of the electromagnet coils (certainly more then two) to cause a balancing repulsive flux and it will cost me $ 350 to find out... And sort of feedback is used to the sense and guide the uP where to flux up a repulsion force.

Are they using hall probes or delicate pressure sensors in the feet to anticipate reactive mass movement. What say you ?

I got a theory. The videos show that the bulbs have a affinity to rotate clockwise. even if placed still it slowly starts to rotate on it's own. This brings me to my theory that the electromagnets are possibly rapidly Cycling. that each magnet in turn keeps the bulb in it's place.

Kind of like how a spinning magnetic top can levitate, except in reverse with the base doing the "spinning"

Let me know what you think of this theory...again just a theory based on what very little i know about magnetics. I'm more a circuitry kind of guy! ^^;

iceng (author)  Nighter3D1 year ago

Excellent, it also had occurred to me but I did not want to pre-lead the discussion.

A small ac motor stator does create a rotating MMF magnetomotive force which may be that stabilizing factor (maybe as low as 20 CPS).

I wonder if they use a circular Halbach array to keep the weight down.

halbach.png
iceng (author)  iceng1 year ago

Looks like you have a solution there

How about a linear motor but in a flat circle

http://www.tankonyvtar.hu/en/tartalom/tamop425/004...

motor.jpg

This article has some pictures of a design that is lifted from above rather than below,

http://mad-science.wonderhowto.com/inspiration/lev...

plus a link into the 4hv.org forums

http://4hv.org/e107_plugins/forum/forum_viewtopic....

plus a link to Chris Rieger's web pages. From there I find the link to the page he wrote about his, lifted from above, levitating light bulb, here,

http://chrisrieger.com/projects/levlight

Levitating from above is fairly "easy" ! Impressive to be able to do it with an unstable system from below.

It is a magnetic levitation device.
You get them in shops or on Ebay with a globe or picture cube.
The illumination can be done in many different ways, from as simple as a battery inside to having a circuit that uses the magnetic field like a transformer to generate the juice required.

iceng (author)  Downunder35m1 year ago

An air core xfmr is a nice LED touch... I'm almost at the point of shelling out money for taking it apart to see the balance method.

"

Go for it we all want to know now! :-)

Have you seen this one? It is the Veritasium episode where they show us a giant levitating aluminum plate, at the Palais de la Decouverte (Palace of Discovery), in Paris.


So it is possible to levitate things using induced currents alone.

However, most of the levitation demos like this that I have seen, use very large electric currents, and the levitated object gets so hot you can cook things on it.

In contrast, the Flyte Bulb is doing whatever it's doing with total power consumption less than 15 watts.

rickharris1 year ago

Very neat. I have a levatron

But that needs some practice to get the puck floating on the circular magnet and needs to be spinning to be stable.

The base I guess has several electromagnets in (DUH!) and sensors to adjust the magnetic field to float the "bulb" which MUST be very light (forgive the pun) .

LED filament low current energized by induction as you can turn it on and off but keep the bulb levitated. Tesela would FLIP!

http://www.dailymail.co.uk/sciencetech/article-307...

iceng (author)  rickharris1 year ago

I have an older model which explains why the levitation needs another force in order to stabilize the magnets from overcoming the delicate balance.

This is a basic requirement in every non eddy current non heating or suspension levitation gadget. How do they get around that requirement.

Maybe there is a spinning mag field in the base, what think you.

Ah Ha Magic at work!

If the system was the other way up and the attraction from above gravity would hold the bulb vertical and you only need to worry about how close it is getting to the electromagnet.

However pushing will also requires that your able to sense when the bulb goes off center, much the same way as you do when you balance a stick on your finger, easy to do with eyes open, impossible with no feedback - i.e. eye shut.

You have much the same situation as this unicycle balancing robot except the wheel is replaced with a repelling magnetic field the strength of which is proportional to the distance away the bulb base is.

In principle you could put the balancing force in the bulb and arrange it to move the magnet in the bottom to maintain balance but I would think the forces are applied from the base to a permanent magnet in the bulb.

An interesting use of I guess hall effect devices.

I haven't handeled one but I bet the base of the bulb is a lot heavier than the "glass" top.

unicycle.jpg

"Flyte works through a magical dance of magnets and induction."

That's a quote from the manual,

http://static1.squarespace.com/static/555a5f7ce4b0...

page 4.

And, uh... that's a pretty good summary I guess.

;-P

The manual maybe has some other clues too. It mentions some specs for the power supply, 15 VDC at 1 A max. It reveals the light in this "light bulb" is produced by LEDs. It warns you against wearing metal jewelry on your hands while setting up the bulb. It says, when the power fails, the bulb will "simply land" back on its base.