Where you buy iron transformer core for DIY audio transformer

tarsik · 08:37 PM

Good day to everyone.

Can anybody say where I can buy C-Core for DIY transformer in US. I cannot find it anywhere except some unspecified iron on ebay or from China where I need to order hundred cores at once.

Thank you in advance

dave slagle · 13th January 2011, 02:31 AM

Alpha core has them (direct link below.)

C-cores Stock

Arnulf · 13th January 2011, 08:33 AM

Quote:

Originally Posted by tarsik

Can anybody say where I can buy C-Core for DIY transformer in US. I cannot find it anywhere except some unspecified iron on ebay or from China where I need to order hundred cores at once.

Over here it's a matter of paying one of local transformer winders a visit. They can order all sorts of material (type, size and shape) but in the end it's cheaper to order a complete transformer, wound per specification.

Don't you have transformer winding companies over there ?

tarsik · 13th January 2011, 02:57 PM

Quote:

Originally Posted by tarsik

Good day to everyone.

Can anybody say where I can buy C-Core for DIY transformer in US. I cannot find it anywhere except some unspecified iron on ebay or from China where I need to order hundred cores at once.

Thank you in advance

Thank you, Dave. I will give them a try. Some ordering system error today - server error. Will try later in a day.

dave slagle · 14th January 2011, 01:29 AM

I just call them and order the old fashioned way.

dave

marcins · 2nd November 2011, 09:32 AM

So if I can, I too have question about core and bobbin for DIY transformer:-) Where can I buy EI84 core for output transformer and bobbin for this? Or bobbin for C-Core transformer.

kevinkr · 26th December 2011, 05:26 PM

Quote:

Originally Posted by marcins

So if I can, I too have question about core and bobbin for DIY transformer:-) Where can I buy EI84 core for output transformer and bobbin for this? Or bobbin for C-Core transformer.

See Alphacore above or perhaps one of several sellers on eBay might have an acceptably performing core.

gorgon53 · 27th December 2011, 12:01 AM

I have a few dozen of SG76(110VA 50Hz) and SG89 cores (220VA 50Hz)
If someone is interrested please mail me at messmer@kolumbus.fi.
No coilformers, no mountingmaterials. Most of the cores are number-matched precision grinded and surface-protected, manufacurer SILICORE (american?), strip is 0.27 or 0.3mm grain orientated. A few nmatched core-halves are good for chokes or OPTs.
If someone has a source for coilformers please let me know.

gorgon53 · 27th December 2011, 12:05 AM

nmatched = unmatched = cheap (porto to EU-countries should be ok but outside migth be xpensive)

gorgon53 · 27th December 2011, 12:07 AM

I have a few dozen of SG76(110VA 50Hz) and SG89 cores (220VA 50Hz)
If someone is interrested please mail me at messmer@kolumbus.fi.
No coilformers, no mountingmaterials. Most of the cores are number-matched precision grinded and surface-protected, manufacurer SILICORE (american?), strip is 0.27 or 0.3mm grain orientated. A few nmatched core-halves are good for chokes or OPTs.
If someone has a source for coilformers please let me know.

12th January 2011, 08:07 PM	#1
tarsik diyAudio Member Join Date: Jan 2009 Location: Victory Gardens, NJ	Where you buy iron transformer core for DIY audio transformer Good day to everyone. Can anybody say where I can buy C-Core for DIY transformer in US. I cannot find it anywhere except some unspecified iron on ebay or from China where I need to order hundred cores at once. Thank you in advance Last edited by tarsik; 12th January 2011 at 08:37 PM.

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13th January 2011, 02:31 AM	#2
dave slagle diyAudio Member Join Date: Mar 2003 Location: NYC	Alpha core has them (direct link below.) C-cores Stock

14th January 2011, 01:29 AM	#5
dave slagle diyAudio Member Join Date: Mar 2003 Location: NYC	I just call them and order the old fashioned way. dave

2nd November 2011, 09:32 AM	#6
marcins diyAudio Member Join Date: Nov 2009	So if I can, I too have question about core and bobbin for DIY transformer:-) Where can I buy EI84 core for output transformer and bobbin for this? Or bobbin for C-Core transformer.

27th December 2011, 12:01 AM	#8
gorgon53 diyAudio Member Join Date: Nov 2006	I have a few dozen of SG76(110VA 50Hz) and SG89 cores (220VA 50Hz) If someone is interrested please mail me at messmer@kolumbus.fi. No coilformers, no mountingmaterials. Most of the cores are number-matched precision grinded and surface-protected, manufacurer SILICORE (american?), strip is 0.27 or 0.3mm grain orientated. A few nmatched core-halves are good for chokes or OPTs. If someone has a source for coilformers please let me know.

27th December 2011, 12:05 AM	#9
gorgon53 diyAudio Member Join Date: Nov 2006	nmatched = unmatched = cheap (porto to EU-countries should be ok but outside migth be xpensive)

27th December 2011, 12:07 AM	#10
gorgon53 diyAudio Member Join Date: Nov 2006	I have a few dozen of SG76(110VA 50Hz) and SG89 cores (220VA 50Hz) If someone is interrested please mail me at messmer@kolumbus.fi. No coilformers, no mountingmaterials. Most of the cores are number-matched precision grinded and surface-protected, manufacurer SILICORE (american?), strip is 0.27 or 0.3mm grain orientated. A few nmatched core-halves are good for chokes or OPTs. If someone has a source for coilformers please let me know.

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