Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

more inductor questions.
more inductor questions.
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
Thread Tools Search this Thread
Old 30th December 2003, 01:18 AM   #1
nuttinbutSQ is offline nuttinbutSQ  United States
diyAudio Member
Join Date: Dec 2003
Location: Florida
Default more inductor questions.

Ok this is just a general Q on inductors. What is the differance between standard wire wound air core inductors and foil air core inductors? (I understand one is foil and one is wire) Which one is better and why? Also I see some of you making your own inductors, they do get expensive buying them. Can someone point me to a website or a book to learn how to make my own. When you make your own, how do you test them so you know you have the correct mH and resistance?


What's a woofer?
  Reply With Quote
Old 30th December 2003, 01:25 AM   #2
Magura is offline Magura  Denmark
diyAudio Member
Magura's Avatar
Join Date: Oct 2003
Location: Denmark, Viborg
The difference between foil and wire inductors is supposed to be the skin effect....the difference in real life is close enough to zero to be called zero (im gonna get a beating for saying this, but ive been testing both...no difference detectable).

As for winding your own inductors, thats no big deal. The biggest problem is to get the wire, and especially to get the wire for a reasonable price. Besides that its as i wrote before on another thread, just a matter of making the inductors with as low resistance as possible.

Here is a link that explains DIY inductors well.


Everything is possible....to do the impossible just takes a little while longer.
  Reply With Quote
Old 30th December 2003, 02:59 AM   #3
Sch3mat1c is offline Sch3mat1c  United States
diyAudio Member
Sch3mat1c's Avatar
Join Date: Jan 2003
Location: Milwaukee, WI
Send a message via ICQ to Sch3mat1c Send a message via AIM to Sch3mat1c
Heh, besides skin effect being negligible, it just causes DCR to rise along with ACR (reactance), basically lowering the Q... if you wanted high Q for a x-o choke, you wouldn't be using an air core...

Seems to me, foil would have more capacitance as well, but again a negligible effect at 20kHz.

Seven Transistor Labs, LLC
Projects and Resources / Electronic Design and Consultation
  Reply With Quote


more inductor questions.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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Copper coil inductor vs. round core inductor tomchaoda Pass Labs 7 21st September 2011 04:42 AM
Which inductor for PSU ? lordvader Parts 1 7th April 2008 03:21 AM
air core inductor vs. iron core inductor WBS Planars & Exotics 5 7th May 2007 11:02 PM
where to get my inductor jdreier Parts 2 4th April 2006 02:07 PM
SOZ inductor Mad_K Pass Labs 1 23rd January 2003 08:11 PM

New To Site? Need Help?

All times are GMT. The time now is 08:25 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio