Lenzless resonant transformer

[verpies]

looking at the size of the pot-core, this will be miniature / precision work.

I wonder what is the largest pot-core available commercially without custom manufacturing. 150mm diameter would be nice...

Does anyone besides Itsu wants to contribute and search the net for it?

[Magluvin]

I wonder what is the largest pot-core available commercially without custom manufacturing. 150mm diameter would be nice...

Does anyone besides Itsu wants to contribute and search the net for it?

http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313&_nkw=ferrite+pot+core&_sacat=0&_from=R40

http://www.ebay.com/sch/i.html?_odkw=ferrite+e+core&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR2.TRC1.A0.H0.Xferrite+transformer+core&_nkw=ferrite+transformer+core&_sacat=0

Also, look on Alibaba for a Chinese connection , where some companies will send samples.

Mags

[verpies]

Also, look on Alibaba for a Chinese connection , where some companies will send samples.

Thanks, but those links do not answer the question what is the largest pot core out there.
That would require looking through a lot of commercial offers - a time consuming process.

e.g.: Page 26 of this catalog shows a 45mm OD pot-core.  Where are yet larger pot-cores available ?

[itsu]

Verpies,

Over at OUR in a private group there was already some research done on pot-cores, and it turned out that the larges
pot-core found then was od 47mm, see 3th link:

http://www.mag-inc.com/home/Advanced-Search-Results?pn=44229

http://www.ferroxcube.com/prod/assets/pcore.htm

http://www.surplussales.com/inductors/FerPotC/FerPotC-1.html

http://www.alltronics.com/cgi-bin/category/74

http://www.fair-rite.com/cgibin/catalog.pgm?THEAPPL=Inductive+Components&THEWHERE=Closed+Magnetic+Circuit&THEPART=Pot+Cores#select:freq1

Regards Itsu

[gyulasun]

Here is a 70 x 42mm pot core at ebay:

http://www.ebay.com/itm/P7042-Siemens-70x42mm-Large-PM-POT-Ferrite-Core-AL-1000-B65696-L1000-A27-1set-/370820982396

from this site it seems the OD 114mm is / was the highest pot size (but other manufacturers may have produced bigger):

http://ferrite.ru/en/products_en/epcos_en/pm_en/

Gyula