Gapped cores ... where to buy - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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 22nd March 2016, 11:53 PM   #1
diyAudio Member
 
Join Date: Sep 2005
Default Gapped cores ... where to buy

Hello all,

Does anybody know where I can buy factory-gapped ferrite ETD cores? Also in small quantity if possible... I live in Europe and it seems a search on the internet only reveals US providers. Needless to say the cost of overseas shipping is very big, rendering the whole project a big money hog.

I am interested in something like this B66367G1000X187 EPCOS (TDK) | Magnetics - Transformer, Inductor Components | DigiKey

Any suggestions are much apreciated. Thank you !
  Reply With Quote
Old 23rd March 2016, 12:53 PM   #2
diyAudio Member
 
Join Date: Mar 2009
Not quite a direct answer for your question but I can propose the solution we use at work when prototyping magnetic components.

What we tend to do to replicate the effect one would expect from using a gapped core is simply to place some plastic shim material between the two ferrite sections creating a universal gap across the join in the core. Obviously the shim will create multiple gaps, so will need to be thinner than the original gap you are trying to replicate but this generally seems to give workable parts before we get proper cores in.
  Reply With Quote
Old 23rd March 2016, 01:07 PM   #3
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
There are European sellers on EBay -- one in Bulgaria at the moment.
__________________
Why, silly hare, are you fleeing from the fierce jaws of the lion now grown tame?
  Reply With Quote
Old 30th March 2016, 12:02 PM   #4
diyAudio Member
 
Join Date: Dec 2001
Location: South Sweden
Pace magnetics in UK.

Any of the large electronic parts suppliers, farnell, RS , TME.eu etc etc.

For prototyping Andrews suggestion works well. A single center leg gap could cause a lot of stray flux and therefore eddy current losses in your windings.
__________________
listen! Can you hear that ...
  Reply With Quote
Old 31st March 2016, 05:44 PM   #5
diyAudio Member
 
Join Date: Sep 2005
Thank you for the suggestion, rikkitikkitavi ! I found everything I need at their site and their prices are fair. Thanks again

Later edit: TME & Farnell don't stock these as far as I searched, but Pace Magnetics is a real winner
  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
Multi-gapped ferrite Pafi Class D 23 30th April 2016 11:17 AM
where to buy ei cores for ot and pt coreythompsonhm Parts 2 16th March 2011 03:10 PM
Where to buy ferrite cores? cjk2 Power Supplies 19 5th January 2010 07:48 PM
Anyone know of source for gapped toroidal cores suitable for xovers? thoriated Multi-Way 0 13th October 2009 12:15 AM
Where to buy large R cores. Tweeker Parts 0 24th January 2006 05:18 AM


New To Site? Need Help?

All times are GMT. The time now is 10:49 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki