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

Solid State Talk all about solid state amplification.

900W H-class PA Amp with Limiter
900W H-class PA Amp with Limiter
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 16th December 2010, 07:51 AM   #1011
ravslanka is offline ravslanka  India
diyAudio Member
 
Join Date: Oct 2006
Location: delhi
Quote:
Originally Posted by Tekko View Post
That layout will not work, the power devices on the left doesent have the common end on the emitter resistors tied to the right side emitter resistors where the speaker output is.
hi tekko,

left side power devices are connected through a jumper in its original pcb too.
i have added it now in the silk.

regards

ravs


be a vegeterian.....
Attached Images
File Type: gif h900 toner.GIF (95.2 KB, 2035 views)

Last edited by ravslanka; 16th December 2010 at 08:04 AM.
  Reply With Quote
Old 16th December 2010, 08:52 AM   #1012
Valenca is offline Valenca  Brazil
diyAudio Member
 
Join Date: Nov 2007
Apex, do you can send us the vertex full schematics + PCB for DIY ?
  Reply With Quote
Old 16th December 2010, 09:24 AM   #1013
NMOS is offline NMOS  Germany
diyAudio Member
 
NMOS's Avatar
 
Join Date: Dec 2010
Location: Frankfurt
This thread is very long

Cant find VI Limiter in Class H design and how does protection circuit in short circuit or overload situation work ?
  Reply With Quote
Old 16th December 2010, 01:25 PM   #1014
apexaudio is offline apexaudio  Serbia
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by NMOS View Post
This thread is very long

Cant find VI Limiter in Class H design and how does protection circuit in short circuit or overload situation work ?
With peak current over 8A per output circuit around 2N5401 give AC signal on amp PRO pin, and protect circuit disconnect speaker. Protect will connect speaker after turn amp off and turn on again (power on reset). If you not sure that usen outputs will not break with 8A current don't try to short circuit amp out.
Regards
  Reply With Quote
Old 16th December 2010, 02:21 PM   #1015
aman khalsa is offline aman khalsa  India
diyAudio Member
 
aman khalsa's Avatar
 
Join Date: Oct 2010
Location: punjab
Default exited to test dis amp.........

hello sir

try to make your h900 . hard to find ir2117 but anyways i have some..

ready to test...

pls check out my mistakes ....

thank u sir ...
Attached Images
File Type: jpg DSC_0605.jpg (731.5 KB, 1897 views)
File Type: jpg DSC_0604.jpg (457.3 KB, 1415 views)
File Type: jpg DSC_0602.jpg (416.4 KB, 1286 views)
File Type: jpg DSC_0600.jpg (407.3 KB, 1221 views)
File Type: jpg DSC_0601.jpg (376.6 KB, 542 views)
  Reply With Quote
Old 16th December 2010, 02:35 PM   #1016
apexaudio is offline apexaudio  Serbia
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by aman khalsa View Post
hello sir

try to make your h900 . hard to find ir2117 but anyways i have some..

ready to test...

pls check out my mistakes ....

thank u sir ...
Nice work, don't forget wire jumper on botom side pcb, use 100w series bulb in primary, and don't forget to connect input gnd to psu gnd.
Regards
  Reply With Quote
Old 16th December 2010, 03:04 PM   #1017
aman khalsa is offline aman khalsa  India
diyAudio Member
 
aman khalsa's Avatar
 
Join Date: Oct 2010
Location: punjab
ok sir

thank u...
  Reply With Quote
Old 16th December 2010, 06:52 PM   #1018
NMOS is offline NMOS  Germany
diyAudio Member
 
NMOS's Avatar
 
Join Date: Dec 2010
Location: Frankfurt
Quote:
Originally Posted by apexaudio View Post
With peak current over 8A per output circuit around 2N5401 give AC signal on amp PRO pin, and protect circuit disconnect speaker. Protect will connect speaker after turn amp off and turn on again (power on reset). If you not sure that usen outputs will not break with 8A current don't try to short circuit amp out.
Regards

very good !!!!! but please where can I find the protection circuit in this long thread ?
  Reply With Quote
Old 16th December 2010, 07:40 PM   #1019
apexaudio is offline apexaudio  Serbia
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by NMOS View Post
very good !!!!! but please where can I find the protection circuit in this long thread ?
Protect schematic and pcb.
Attached Images
File Type: jpg APEX PA PROTECT SCH.jpg (226.2 KB, 829 views)
File Type: jpg APEX H900 Protect Component layout.jpg (664.6 KB, 833 views)
  Reply With Quote
Old 16th December 2010, 07:53 PM   #1020
apexaudio is offline apexaudio  Serbia
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
PSU schematic and pcb.
Attached Images
File Type: jpg APEX H-class PSU.jpg (198.0 KB, 812 views)
File Type: jpg H900 PSU.jpg (515.8 KB, 722 views)
  Reply With Quote

Reply


900W H-class PA Amp with LimiterHide 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
900w amp module for sale nigelwright7557 Swap Meet 1 15th May 2017 09:36 PM
Nakamichi PA-7 & PA-5 Bias Setting? sourceoneaudio Solid State 6 8th March 2012 12:37 PM
About a very very simple class D PA amp gaetan8888 Class D 8 13th March 2009 02:21 PM
Class-d for a 1kw PA amp MikeHunt79 Class D 4 30th December 2007 06:19 PM
200w Amp + 900w Sub = explosion? 56k Warning Daemonicus Subwoofers 2 31st May 2006 04:30 AM


New To Site? Need Help?

All times are GMT. The time now is 04:35 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki