Kapanadze and other FE discussion

[mkjekyll]

Galfenol is less expensive and almost as good a magnetostriction as Terfenol.  I had time to watch the Annis video in full today and noticed Wesley put up some mag-ram and a square BH so sorry to be redundant but it's nice to know others think alike.  Also read the Annis patent and he mentions the Radus boots too, pretty cool.

Might even be able to DIY galfenol with iron and gallium and a forge.  Best prices I found on Alibaba

Now I must ask what property does Terfenol D have besides converting movement to energy or energy to movement in a very high Q?

Some other ideas, what core materials dont short out high voltage, Barrium Ferrite, Micrometal...

[stivep]

Thank you mkjekyll

https://youtu.be/DNxob3yY4LE
link are at first post below  the video:
Pinned by stivep1      stivep1 

https://patents.google.com/patent/WO2009046265A1/tr,   compare dates of filing. Это устройство работает с, самозапиткой, selflooping
https://patentimages.storage.googleapis.com/62/00/84/e06f92b5a2938e/WO2009046265A1.pdf  compare different versions !!!!
https://patentimages.storage.googleapis.com/5b/06/7a/a683a3e327631c/US20140091890A1.pdf, compare different versions !!!!
https://www.tedmagnetics.com/ https://www.tedmagnetics.com/
https://maritime.org/doc/neets/mod01.pdf http://info.ee.surrey.ac.uk/Workshop/advice/coils/mu/#bhcurve
https://www.doitpoms.ac.uk/tlplib/ferroelectrics/printall.php http://fullfunctioneng.com/info/Hall%20vs%20VR.pdf !!!! important
http://www.cmi-ferrite.com/products/Gapped.htm http://www.eamagnetics.com/product/ceramicferrite/ https://www.youtube.com/watch?v=zg8V9XCgIqs
https://www.researchgate.net/publication/224289652_Analysis_of_a_Virtual_Air_Gap_Variable_Reactor

These  are the links for Ted Annis
Wesley

[mkjekyll]

Super cool winding machines Wesley!
The torroid one looks like fun, but I imagine wastes quite a bit of wire if all bearings and moving parts are not smoothly operating and aligned.

I would like to order two coils from you if you can accommodate, but as is well known there are only so many hours in a day?

I ran into the quagmire of coil winding machines or lack thereof, as it seems there is very little for the experimenter that can accommodate the length or girth without getting ito something one needs machinery movers to relocate.

I picture something along the lines of a cheap wood lathe from Harbor Fright with a sowing machine foot pedal and an opto-counter  For the more adventurous an additional transverse of some type with a stepper motor that could be added to such a simple contraption and controlled via some optical limits with reflective absorptive stickers.



I was looking at the Chinese CNC winders but doubt those can accommodate much more than a guitar pickup and the operation of these so called CNC winders is difficult to find.

Mick

[mkjekyll]

Wesley,

Thank you for the answer/inference to that query. At first glance seems like a way to accommodate fast switching with a saturable reactor. I will have to drill down further in the previously linked authors thesis here:

https://tspace.library.utoronto.ca/bitstream/1807/17754/1/Dolan_Dale_SL_200906_PhD_Thesis.pdf

[stivep]

Науч.Студия SERGEY KACHAN
Scientific Study
High Voltage Radiometer Test
https://www.youtube.com/watch?v=fvycYK3NBpg&feature=youtu.be

Wesley