ucd 25 watts to 1200 watts using 2 mosfets - Page 331 - diyAudio
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 3rd February 2013, 09:24 AM   #3301
diyAudio Member
 
andrewlebon's Avatar
 
Join Date: Feb 2008
Hello
greetings many diyers having problems with RIGHT SELECTION of cores please go
to detex audio site anyone can clearly see the core used along with core no personally
i have tried with orignal cores detex audio is using there is a difference detex audio MUST
have tested many cores before using the cores he is using in his amps
warm regards
andrew lebon
__________________
[image][/image]"It's Better to try and fail than to never know and always wonder"
  Reply With Quote
Old 3rd February 2013, 10:44 AM   #3302
akraj is offline akraj  Bangladesh
diyAudio Member
 
Join Date: Nov 2010
Quote:
Originally Posted by luka View Post
YES -2 MATERIAL IS GOOD
Thanks Luka.
  Reply With Quote
Old 4th February 2013, 11:59 PM   #3303
diyAudio Member
 
Join Date: Oct 2011
Default IR SOUND Have knows please tell me why there is the same problem

Quote:
Originally Posted by IRSound View Post
Hi guys..

so I've just finished IRS1500..but there is also a problem

please watch this video :

Class-D IRSD1K5 - No & Low Level input Problem - YouTube

when i turn on power supply..after s short delay , speaker connected to amp's out. as you can hear in video , there is a noise available at output. (input volume = 0) and when i increase volume up to 4~5%, a really bad audio signal become appear. also the active led indicator isn't bright constantly.
when i increase the volume (about 7~8 %) the amp start to oscillate and those problem solved.

guys please help me. anyone have similar problems ?

Regards,
IRSound
Have knows please tell me why there is the same problem
  Reply With Quote
Old 5th February 2013, 12:08 AM   #3304
diyAudio Member
 
Join Date: Oct 2011
How many output coil for IRS 3000 uh? Please know how many ohms resistance to the door also ırfp4227 regards
  Reply With Quote
Old 5th February 2013, 10:02 AM   #3305
diyAudio Member
 
Join Date: Sep 2012
Location: chennai
Default hi, Andrew

greetings,

detex announced new Class d Amp dpa 6000i/8000i are released soon and it can drive 8000 watts RMS. so any idea to design 8000w class d amp or you guess to any combination of gate driver, mosfet or Igbt.

thanks
  Reply With Quote
Old 5th February 2013, 10:06 AM   #3306
diyAudio Member
 
Join Date: Sep 2012
Location: chennai
my guess is ir21864 is a 4 amp gate driver so it will drive 4 pair of irfp90n20 and it produce 6000 watts then what u think about this.
  Reply With Quote
Old 5th February 2013, 10:28 AM   #3307
diyAudio Member
 
andrewlebon's Avatar
 
Join Date: Feb 2008
Default hello

hi, Andrew
greetings,

detex announced new Class d Amp dpa 6000i/8000i are released soon and it can drive 8000 watts RMS. so any idea to design 8000w class d amp or you guess to any combination of gate driver, mosfet or Igbt.

thanks
Hi Kirubakaran
greetings insane power has any one tried detex amps at 125+/-
RAILS i dont think so most diyers would find it hard to reach 170 volt dc rails
plus the expensive mosfets and the speakers and the POWER SUPPLY transformer better to make irs3000
warm regards
andrew lebon
__________________
[image][/image]"It's Better to try and fail than to never know and always wonder"
  Reply With Quote
Old 9th February 2013, 12:51 PM   #3308
diyAudio Member
 
andrewlebon's Avatar
 
Join Date: Feb 2008
Default small test

amp at 110 dc volts+/-
Attached Images
File Type: jpg IMG_0260.jpg (928.4 KB, 1014 views)
__________________
[image][/image]"It's Better to try and fail than to never know and always wonder"
  Reply With Quote
Old 9th February 2013, 01:01 PM   #3309
akraj is offline akraj  Bangladesh
diyAudio Member
 
Join Date: Nov 2010
Quote:
Originally Posted by andrewlebon View Post
amp at 110 dc volts+/-
Hi Andrew:

Are you going to share this design with us?

Thanks in advance.

Oh one more thing, can you please let me know where I can find T157-2 or T 106-2 in Calcutta? Address?

Raj
  Reply With Quote
Old 9th February 2013, 03:38 PM   #3310
diyAudio Member
 
andrewlebon's Avatar
 
Join Date: Feb 2008
Hi Akraj
greetings same design as posted in forum to make a proper d class amp FIRST get
a proper core then attempt to make a d class amp all yours problems will be solved
warm regards
andrew lebon
__________________
[image][/image]"It's Better to try and fail than to never know and always wonder"
  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
Philips 40/25/15 watts amplifier with Universal preamplifier circuit. renjiish Solid State 64 28th July 2014 11:33 AM
Decibel Watts VS Watts ? fivestring Solid State 11 1st April 2009 01:08 PM
AMP1-B: why only 25 watts @8ohms? theAnonymous1 Class D 10 15th August 2005 06:55 PM
Sound quality of amps at 0.3 watts vs @ typical 5 watts rick57 Solid State 2 26th March 2005 06:25 AM
Need 2 watts Vivek Everything Else 4 17th July 2003 08:29 AM


New To Site? Need Help?

All times are GMT. The time now is 01:43 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