Source for iron cores?

Jeb-D. · 3rd June 2006, 07:20 PM

Any one know of a distibuter for small quantity cores for power transformer applications? Or is it possible to de-laminate an already assembled transformer?

poobah · 3rd June 2006, 07:56 PM

Go to www.thomasregister.com and search "transformer laminations"

Here is one.

Lams are always a pain to get in small quantites.

Look for "transformers and/or winding" in your yellow pages as well. They may recommend someone.

I can call my winder on Monday if you have no luck. There are alot of small distributors but they don't advertise well.

Most transformers are vacuum impregnated with varnish to shut them up. You can get them apart... soak them in a closed container for a few days in toluene (laquer thinner), xylene, or MEK. The MEK causes cancer in California.

jlsem · 4th June 2006, 02:24 PM

Or these:

http://www.alleghenyludlum.com/ludlu...oductLine.html

http://www.alleghenyludlum.com/ludlu...oductLine.html

http://www.mag-inc.com/strip_wound/s...ound_cores.asp

John

poobah · 4th June 2006, 02:30 PM

Spang Magnetics is a great bunch of people... the 3rd link posted above by jlsem.

They will hustle samples, gapped cores etc... out in a hurry.

jlsem · 4th June 2006, 02:33 PM

National-Arnold Magnetics
17030 Muskrat Avenue
Adelanto, California 92301
(800) 877-7641
(760) 246-3020
(760) 246-3870 Facsimile
Tape Wound C-Cores, E-Cores, Toroidal
Cores and Special Configurations

Arnold and Magnetics Inc. seem to have the largest selections. I have never dealt with them directly, but most of the exotic alloy and high quality oriented steel cores I have gotten from stripping surplus military transformers and from eBay have been manufactured by these two companies.

John

vax9000 · 5th June 2006, 02:51 AM

This is what you want, http://www.alphacore.com/ocore.htm
They usually have price for 1, but now I see price for 10 only. But they are cheap enough that you can afford 10 easily.

Jeb-D. · 5th June 2006, 03:43 AM

the problem with O and toroid cores is that they are impractical for the home winder. Unless your building a switch mode power supply. Although, perhaps a smps isn't a bad idea

astouffer · 5th June 2006, 03:58 AM

http://www.tempel.com/index.html

They have all the standard E-I core sizes in M6 grade.

poobah · 5th June 2006, 04:29 AM

Yeah... just try to buy 200 lams...

There is NO help!

Geek · 5th June 2006, 06:36 AM

Quote:

Originally posted by astouffer
http://www.tempel.com/index.html

They have all the standard E-I core sizes in M6 grade.

I've contected these people before and was quoted a minumum order of 1,000 Kg

3rd June 2006, 07:20 PM	#1
Jeb-D. diyAudio Member Join Date: Nov 2005 Location: SoCal	Source for iron cores? Any one know of a distibuter for small quantity cores for power transformer applications? Or is it possible to de-laminate an already assembled transformer?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How hot do E-cores get?	Dr.EM	Parts	5	26th January 2009 10:13 PM
Source for Inductor Bobbins and Cores?	gtforme00	Multi-Way	1	24th January 2008 07:11 PM
pot cores	sunrise	Parts	4	20th October 2005 09:52 PM
cores	Kilowatt	Class D	24	8th February 2004 04:13 PM
for R-cores	Mecanp	Digital Source	8	14th February 2003 12:17 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read

3rd June 2006, 07:56 PM	#2
poobah diyAudio Member Join Date: Nov 2005	Go to www.thomasregister.com and search "transformer laminations" Here is one. Lams are always a pain to get in small quantites. Look for "transformers and/or winding" in your yellow pages as well. They may recommend someone. I can call my winder on Monday if you have no luck. There are alot of small distributors but they don't advertise well. Most transformers are vacuum impregnated with varnish to shut them up. You can get them apart... soak them in a closed container for a few days in toluene (laquer thinner), xylene, or MEK. The MEK causes cancer in California.

4th June 2006, 02:24 PM	#3
jlsem diyAudio Member Join Date: Jun 2003 Location: Dallas,TX	Or these: http://www.alleghenyludlum.com/ludlu...oductLine.html http://www.alleghenyludlum.com/ludlu...oductLine.html http://www.mag-inc.com/strip_wound/s...ound_cores.asp John

4th June 2006, 02:30 PM	#4
poobah diyAudio Member Join Date: Nov 2005	Spang Magnetics is a great bunch of people... the 3rd link posted above by jlsem. They will hustle samples, gapped cores etc... out in a hurry.

4th June 2006, 02:33 PM	#5
jlsem diyAudio Member Join Date: Jun 2003 Location: Dallas,TX	National-Arnold Magnetics 17030 Muskrat Avenue Adelanto, California 92301 (800) 877-7641 (760) 246-3020 (760) 246-3870 Facsimile Tape Wound C-Cores, E-Cores, Toroidal Cores and Special Configurations Arnold and Magnetics Inc. seem to have the largest selections. I have never dealt with them directly, but most of the exotic alloy and high quality oriented steel cores I have gotten from stripping surplus military transformers and from eBay have been manufactured by these two companies. John

5th June 2006, 02:51 AM	#6
vax9000 diyAudio Member Join Date: May 2006 Location: Cleveland	This is what you want, http://www.alphacore.com/ocore.htm They usually have price for 1, but now I see price for 10 only. But they are cheap enough that you can afford 10 easily.

5th June 2006, 03:43 AM	#7
Jeb-D. diyAudio Member Join Date: Nov 2005 Location: SoCal	the problem with O and toroid cores is that they are impractical for the home winder. Unless your building a switch mode power supply. Although, perhaps a smps isn't a bad idea

5th June 2006, 03:58 AM	#8
astouffer diyAudio Member Join Date: Jun 2004 Location: Pittsburgh, crumbling wasteland	http://www.tempel.com/index.html They have all the standard E-I core sizes in M6 grade.

5th June 2006, 04:29 AM	#9
poobah diyAudio Member Join Date: Nov 2005	Yeah... just try to buy 200 lams... There is NO help!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)