Where to get iron core -- Fe/Si? - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 18th February 2012, 04:32 PM   #1
diyAudio Member
 
Join Date: Jan 2011
Location: New Brunswick
Default Where to get iron core -- Fe/Si?

I am getting the idea that if you build your own transformers, then you can make better amps because you can give the tubes, etc the exact required voltages.

But where to get less that 10 tons of laminates at a time?

(plus, and ideas about ferrite cores having the same magnetism, or permeability, as fe/si, please post because ferrite seems to be more available)

Last edited by John Bessa; 18th February 2012 at 04:41 PM.
  Reply With Quote
Old 20th February 2012, 08:54 PM   #2
diyAudio Member
 
Join Date: Jan 2011
Location: New Brunswick
heh, no ideas?
  Reply With Quote
Old 20th February 2012, 09:06 PM   #3
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
Quote:
Originally Posted by John Bessa View Post
I am getting the idea that if you build your own transformers, then you can make better amps because you can give the tubes, etc the exact required voltages.
That isnt true.

I always use off the shelf components and never had any problems.
__________________
PCBCAD50 software. http://www.murtonpikesystems.co.uk
  Reply With Quote
Old 20th February 2012, 09:53 PM   #4
jcx is offline jcx  United States
diyAudio Member
 
Join Date: Feb 2003
Location: ..
it isn't that hard to find smaller regional manufacturers that do custom - I'd much rather pay them as little as 2-3x the standard part cost in many cases for exactly what you want

the biggest issue in power supply transformers is that “standard” parts push Bmax – the least iron, copper they can ship means the most profit
  Reply With Quote
Old 20th February 2012, 10:05 PM   #5
diyAudio Member
 
Parasonic's Avatar
 
Join Date: Dec 2009
Location: Suncoast
Agree with Nigelwright, but add that winding your own components is a complex undertaking, and requires a lot of skill & patience. Even so, you may do a lot of work and still not end up with a better wound component as Nigel has said. You may however end up with an outstandingly good transformer, but study, many repetitions of building components and experience will be the best teacher. I would never discourage someone from trying.
I am not sure where to locate larger ferrites, but you can try:

Thomas and Skinner

for laminations. T&S have sold me a few pounds at a time in the past.

Good luck

Terry
  Reply With Quote
Old 20th February 2012, 10:29 PM   #6
iko is offline iko  Canada
diyAudio Moderator
 
iko's Avatar
 
Join Date: May 2008
Location: Toronto
Quote:
Originally Posted by John Bessa View Post
I am getting the idea that if you build your own transformers, then you can make better amps because you can give the tubes, etc the exact required voltages.

But where to get less that 10 tons of laminates at a time?

(plus, and ideas about ferrite cores having the same magnetism, or permeability, as fe/si, please post because ferrite seems to be more available)
Here, small quantities and reasonable prices, m4-011 c-cores.

C-cores Stock
  Reply With Quote
Old 21st February 2012, 01:52 PM   #7
diyAudio Member
 
Join Date: Jan 2011
Location: New Brunswick
thanks ikoflexer for a useful answer -- there are plenty of pages, youtubes, etc showing exactly how to do it, if you can wind a fishing line and work on tube amps, you can certainly build an xformer

Last edited by John Bessa; 21st February 2012 at 02:00 PM.
  Reply With Quote
Old 21st February 2012, 02:00 PM   #8
diyAudio Member
 
Join Date: Jan 2011
Location: New Brunswick
these look good -- but not E-cores, they are C-cores -- how do you wind a C-core, will it work? I have never seen an amp w/ C-cores.

Click the image to open in full size.

Looks like a (socialist) government will have to mandate E-cores...
  Reply With Quote
Old 21st February 2012, 02:36 PM   #9
Fusor is offline Fusor  United States
diyAudio Member
 
Fusor's Avatar
 
Join Date: May 2003
Location: Cornville, Iowa
Surplus Sales of Nebraska ferrite E cores and bobbins
Ferrite: E Cores
  Reply With Quote
Old 21st February 2012, 02:49 PM   #10
diyAudio Member
 
Join Date: Nov 2008
Location: Oakmont PA
Quote:
Originally Posted by John Bessa View Post
these look good -- but not E-cores, they are C-cores -- how do you wind a C-core, will it work? I have never seen an amp w/ C-cores.

Looks like a (socialist) government will have to mandate E-cores...
First you wind your turns on the bobbins. These can be mounted to a motor for easier winding just be sure the wire feed spool is 30 times the bobbin length away for smooth winding. Then after the bobbins are wound you glue the cores to each other. (If i have to tell you to place the bobbins on before you glue the cores, you might want to reconsider the project!)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Air Core vs Iron Core - When? BlueWizard Multi-Way 18 3rd September 2010 08:24 PM
Which, Foil Air Core or Iron Core Inductors slhijb Multi-Way 16 20th November 2009 03:12 AM
Solen Air core inductors, Hammond Iron core. gnomus Swap Meet 0 30th July 2004 01:28 AM
Iron Dust Core Transformer Hemal Car Audio 0 7th June 2004 03:43 PM
Air core vs Iron core Ilianh Multi-Way 5 2nd January 2003 01:36 PM


New To Site? Need Help?

All times are GMT. The time now is 06:25 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2