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 11th February 2014, 09:09 PM   #1
johanx2 is offline johanx2  United States
diyAudio Member
 
Join Date: Jan 2014
Default High-End Class D amplifier - 25w to 1250w with 2 N mosfets

Hi guys, what do you think about this high end class D amplifier ? This amplifier design is making a lot of noise in a known Spanish forum, because of its high fidelity, very easy construction and amazing high power (25w to 1250w, even 12000w replacing certain components).

This is a work of José Tagle.
Source

Based on sorenson audio experiment (not UCD)
Components with DPN value should be ignored, they are for experimenting.
All resistors are 1/4w, unless otherwise specified.
Zener diodes are 1/2w
Power supply should be +/-40v (it should never exceed 50v)
To get 200w rms, the transformer should provide 10A
For this project, amazingly, mosfets don't really need heat sink, since they will be always cool, but just for precaution you can add two little 5w heat sinks.
Inductor depends on speaker impedance, for 4 ohms, inductor should be 47uh/10A, and for 8 ohms 100uh/5A. The designer says that there's no need for inductor only if we are feeding a subwoofer.
If you rather want less than 200w rms power, then you can feed the circuit with a lower voltaje, and then you should read the voltaje of TL074, if it's lower than +/-5.1v, half R21 and R22 values.
Attached Images
File Type: png amp.png (87.4 KB, 820 views)
File Type: png amp2.png (254.9 KB, 802 views)
File Type: jpg Imagen033.jpg (79.5 KB, 754 views)
Attached Files
File Type: pdf 200w.pdf (359.8 KB, 172 views)

Last edited by johanx2; 12th February 2014 at 03:58 AM.
  Reply With Quote
Old 12th February 2014, 01:43 AM   #2
diyAudio Member
 
Workhorse's Avatar
 
Join Date: Dec 2004
Where is the output Inductor and filter capacitor ??????
  Reply With Quote
Old 12th February 2014, 01:51 AM   #3
diyAudio Member
 
andrewlebon's Avatar
 
Join Date: Feb 2008
Hi Workhorse
greetings whats best core for output for class d amps
warm regards
andrew
__________________
[image][/image]"It's Better to try and fail than to never know and always wonder"
  Reply With Quote
Old 12th February 2014, 02:01 AM   #4
diyAudio Member
 
andrewlebon's Avatar
 
Join Date: Feb 2008
Amplificador HighEnd Clase D de 25W a 1250Wrms sólo con 2 MosFets N
UCD amp thread started here
__________________
[image][/image]"It's Better to try and fail than to never know and always wonder"
  Reply With Quote
Old 12th February 2014, 03:14 AM   #5
ishiru is offline ishiru  Indonesia
diyAudio Member
 
ishiru's Avatar
 
Join Date: Oct 2013
Location: Jakarta, ID - Nagasaki, JP
strange..how they works?..
isn't class D using modulator or whatever its name like IRF2110 or else for the simplest circuit?..and also, class D output was square wave and using LC is must for the output afaik.
  Reply With Quote
Old 12th February 2014, 03:17 AM   #6
johanx2 is offline johanx2  United States
diyAudio Member
 
Join Date: Jan 2014
Quote:
Originally Posted by Workhorse View Post
Where is the output Inductor and filter capacitor ??????
Give me 5 minutes to translate the schematic notes.
  Reply With Quote
Old 12th February 2014, 03:57 AM   #7
diyAudio Member
 
Join Date: Mar 2007
Location: California
The schematic mentions an output inductor, but none is shown as being part of the circuit... maybe it is located off of the pcb? That would make for a nice RF strobe...
  Reply With Quote
Old 9th March 2014, 03:49 PM   #8
diyAudio Member
 
sivan_and's Avatar
 
Join Date: Dec 2004
Location: Dxb / India
Send a message via Yahoo to sivan_and
Anyone has gerber files for the pcb ?
__________________
SivanandBalan
  Reply With Quote
Old 11th March 2014, 12:44 PM   #9
ljm_ljm is offline ljm_ljm  China
diyAudio Member
 
Join Date: Sep 2006
Who can have the oscilloscope test photos.

Square wave, or other?
  Reply With Quote
Old 11th March 2014, 01:29 PM   #10
ljm_ljm is offline ljm_ljm  China
diyAudio Member
 
Join Date: Sep 2006
what is the c1 c2 r24 dnp
  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
The High-End, how Hi-End is this amplifier board? (Ebay) Mihkus Solid State 4 24th June 2013 04:57 PM
FS: Eleven 2x TPA3123, 25W x 4 Class-D Amplifier Modules Applesauce Swap Meet 3 1st May 2013 01:12 AM
813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm audiodesign Tubes / Valves 5 19th September 2010 07:34 PM
lateral mosfets in high end amplifiers sparkle Solid State 17 10th May 2007 12:30 PM
Class A high-end amp? lagoausente Solid State 6 4th February 2002 07:03 PM


New To Site? Need Help?

All times are GMT. The time now is 03:26 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