Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 15th February 2012, 06:10 PM   #21
nrg2009 is offline nrg2009  United States
diyAudio Member
 
Join Date: Apr 2009
Location: Detroit, born and raised in the netherlands.
very interesting.. I'd like to build one.
  Reply With Quote
Old 15th February 2012, 11:00 PM   #22
diyAudio Member
 
irvynejay's Avatar
 
Join Date: Nov 2010
Location: Philippines;Mindanao,Butuan
Send a message via Yahoo to irvynejay Send a message via Skype™ to irvynejay
Norazmi thanx i did use 22uh 47 turns with the red core 1uf filter still have this problem coil heats up ill post my ee & ei ferrite cores smaller than ei33 maybe you can help me calculate
Attached Images
File Type: jpg DSC_0003.jpg (421.6 KB, 2502 views)
File Type: jpg DSC_0004.jpg (279.2 KB, 2173 views)
File Type: jpg DSC_0005.jpg (415.7 KB, 2001 views)
File Type: jpg DSC_0006.jpg (451.2 KB, 1801 views)
__________________
Knowing GOD is not being good,Knowing GOD is just knowing him as my friend

Last edited by irvynejay; 15th February 2012 at 11:15 PM.
  Reply With Quote
Old 15th February 2012, 11:24 PM   #23
norazmi is offline norazmi  Malaysia
diyAudio Member
 
Join Date: Feb 2008
use the core that i mark it with red circle, wind coil about 14-15 laps@turn. min awg 18. I`ll post mine too i made it from EI flyback trafo and it work great high volume only warming.

Click the image to open in full size.
Attached Images
File Type: jpg DSC_0005.jpg (785.0 KB, 251 views)
  Reply With Quote
Old 15th February 2012, 11:26 PM   #24
norazmi is offline norazmi  Malaysia
diyAudio Member
 
Join Date: Feb 2008
irvy, u have many ferrite core lol . what ur going to do? apply them into class D?
  Reply With Quote
Old 15th February 2012, 11:26 PM   #25
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
Quote:
Originally Posted by irvynejay View Post
Norazmi thanx i did use 22uh 47 turns with the red core 1uf filter still have this problem coil heats up ill post my ee & ei ferrite cores smaller than ei33 maybe you can help me calculate
I use a t106-2 red core with around 30 turns and it barely gets warm.
__________________
http://www.murtonpikesystems.co.uk PCBCAD50 pcb design software.
  Reply With Quote
Old 15th February 2012, 11:31 PM   #26
diyAudio Member
 
irvynejay's Avatar
 
Join Date: Nov 2010
Location: Philippines;Mindanao,Butuan
Send a message via Yahoo to irvynejay Send a message via Skype™ to irvynejay
hehehe i want to experiment the core every core have different response red core good detail audio,green good for low ,

what about this one gap is bigger than the other one
Attached Images
File Type: jpg DSC_0001.jpg (303.7 KB, 300 views)
__________________
Knowing GOD is not being good,Knowing GOD is just knowing him as my friend

Last edited by irvynejay; 15th February 2012 at 11:40 PM.
  Reply With Quote
Old 15th February 2012, 11:40 PM   #27
norazmi is offline norazmi  Malaysia
diyAudio Member
 
Join Date: Feb 2008
ohh, yep, i feel different too, iron core and ferrite core have different sound and i`m prefer more to ferrite actually because can get more sound details.
  Reply With Quote
Old 15th February 2012, 11:43 PM   #28
diyAudio Member
 
irvynejay's Avatar
 
Join Date: Nov 2010
Location: Philippines;Mindanao,Butuan
Send a message via Yahoo to irvynejay Send a message via Skype™ to irvynejay
Do i have to use bobbin for it before winding ??
__________________
Knowing GOD is not being good,Knowing GOD is just knowing him as my friend
  Reply With Quote
Old 16th February 2012, 12:52 AM   #29
norazmi is offline norazmi  Malaysia
diyAudio Member
 
Join Date: Feb 2008
Yes Irvy use bobbin, Its a must
  Reply With Quote
Old 16th February 2012, 12:54 AM   #30
norazmi is offline norazmi  Malaysia
diyAudio Member
 
Join Date: Feb 2008
Irvy, if you can find RX5 hes from philippines too, hes good knowledge too about class D amp, maybe u can communicate with him better way.
  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
FETish: ultra-simple transconductance amp Mr Evil Solid State 38 13th May 2009 11:07 AM
The "Freebird" ultra clean ultra simple preamp design Russ White Chip Amps 87 11th August 2008 09:28 AM
ultra simple distortion effect apunker Instruments and Amps 14 22nd February 2005 06:04 PM


New To Site? Need Help?

All times are GMT. The time now is 08:47 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