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

Iron Core Transformer Formula
Iron Core Transformer Formula
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 3rd October 2012, 07:26 AM   #101
shams is offline shams
diyAudio Member
 
Join Date: Oct 2012
HEY,
Can anyone please tell me what is the formula for finding priamary and secondory turns for a small ferrite core transformer where 220vac will be the input of priamary side and 12vac will be the output of secondory side...or can we use the EP/ES=NP/NS formula??

please help me...
  Reply With Quote
Old 3rd October 2012, 09:45 AM   #102
TonyTecson is offline TonyTecson  Philippines
diyAudio Moderator
 
TonyTecson's Avatar
 
Join Date: May 2003
Location: Palatiw, Pasig City
Iron Core Transformer Formula
@Shams, posting in all caps is against forum rules....please do not do it again...
__________________
planet10 needs your help: Let's help Ruth and Dave...http://www.diyaudio.com/forums/plane...ml#post5010547[B
  Reply With Quote
Old 3rd October 2012, 09:56 AM   #103
sofaspud is offline sofaspud  United States
diyAudio Member
 
sofaspud's Avatar
 
Join Date: Nov 2005
Location: San Antonio
re: EP/ES=NP/NS
This formula won't provide the number of turns, only the turns ratio.
Determining the actual number of turns is much more involved - physically counting them or heady calculations from wire size.
__________________
It is error only, and not truth, that shrinks from enquiry. - Thomas Paine
  Reply With Quote
Old 3rd October 2012, 10:09 AM   #104
TonyTecson is offline TonyTecson  Philippines
diyAudio Moderator
 
TonyTecson's Avatar
 
Join Date: May 2003
Location: Palatiw, Pasig City
Iron Core Transformer Formula
Quote:
Originally Posted by shams View Post
HEY,
Can anyone please tell me what is the formula for finding priamary and secondory turns for a small ferrite core transformer where 220vac will be the input of priamary side and 12vac will be the output of secondory side...or can we use the EP/ES=NP/NS formula??

please help me...
ferrite core, means you are looking at smps, out of scope of this thread...
__________________
planet10 needs your help: Let's help Ruth and Dave...http://www.diyaudio.com/forums/plane...ml#post5010547[B
  Reply With Quote
Old 3rd October 2012, 02:34 PM   #105
shams is offline shams
diyAudio Member
 
Join Date: Oct 2012
so friends....what should i do please tell me how will i got to know about the ferrite core transformer,the priamary & secondory turns...everything!! related to it......
pleaseeeeee help its very very urgent!!
  Reply With Quote
Old 3rd October 2012, 03:10 PM   #106
geraldfryjr is offline geraldfryjr  United States
diyAudio Member
 
Join Date: Feb 2008
Location: Jackson,michigan
This thread covers a lot of the basics of transformers'

http://www.diyaudio.com/forums/plana...ml#post2088330

It is a long thread but as lots of very good info as it explains basics of core saturation and how to go about finding such parameters.
As well as finding the turns count of the windings and ratio of a unknown transformer.

Here is a link to a calculator that might help you.

http://www.diyaudio.com/forums/plana...ml#post2089815

This one is a good one as well but I think it assumes a square wave input and I have not tried raw calculations to check it yet,

TRANSFORMERS

You need to know the core size and type of material in order to determine the number of primary turns as per frequency and primary voltage in order to design it for no saturation of the core.

There many good threads on transformer design in this forum but I don't have a compiled list for them as they can be found very easily using the search function.

Here is the calculator that I think you are looking for and it also shows the formulas as well,

Maximum Flux Density Calculator

There a few more transformer calculators that can be found on this page,

http://www.daycounter.com/SiteMap.phtml

I hope this helps you !!


jer

Last edited by geraldfryjr; 3rd October 2012 at 03:19 PM.
  Reply With Quote
Old 3rd October 2012, 05:06 PM   #107
JOHN BALI is offline JOHN BALI  Indonesia
diyAudio Member
 
JOHN BALI's Avatar
 
Join Date: Jun 2010
Location: Near the Mountain
Hi, something new here

Back on iron trafo...
I think I must finish my trafo build as soon as possible...
But I'm not sure yet
maybe I'll show what I've been done so far
I will need suggestion, to continue or start over
__________________
Thank you, I wish you happy
peace & G B U
  Reply With Quote
Old 3rd October 2012, 06:43 PM   #108
donnyab is offline donnyab
diyAudio Member
 
Join Date: May 2011
rikkit,
do you have any further info on that pdf file
not getting any hits for that either google or texas instruments
thanks
  Reply With Quote
Old 4th October 2012, 04:17 AM   #109
JOHN BALI is offline JOHN BALI  Indonesia
diyAudio Member
 
JOHN BALI's Avatar
 
Join Date: Jun 2010
Location: Near the Mountain
Default I think this is not good

This will be 300VA trafo that I'm going to make or maybe not.
I'm just not so confidence is this okay or not
I thing ask some suggestion here is a good way
I just use what I see around he..he... ,
latter
I found better "things" to use as
inter layer windings insulation
also found good trafo as a reference

here 2 pictures
what do you think, give it a try or
I must start again with better way?

Any comment greatly appreciated
Attached Images
File Type: jpg Base.jpg (103.5 KB, 127 views)
File Type: jpg Primary almost done.jpg (129.7 KB, 117 views)
__________________
Thank you, I wish you happy
peace & G B U
  Reply With Quote
Old 4th October 2012, 06:00 AM   #110
TonyTecson is offline TonyTecson  Philippines
diyAudio Moderator
 
TonyTecson's Avatar
 
Join Date: May 2003
Location: Palatiw, Pasig City
Iron Core Transformer Formula
^yeah, why not? if i were you i'd make a wooden mandrel with which to put the bobbin into, this way you can pound on the windings using wooden mallet or a bench vise to make sure your built up coil fits the iron core....
__________________
planet10 needs your help: Let's help Ruth and Dave...http://www.diyaudio.com/forums/plane...ml#post5010547[B
  Reply With Quote

Reply


Iron Core Transformer FormulaHide 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
Where you buy iron transformer core for DIY audio transformer tarsik Tubes / Valves 10 27th December 2011 08:15 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 11:57 AM.


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