Dx Troyan, a 650 watts channel amplifier. - Page 27 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 17th August 2010, 01:33 PM   #261
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Troyan updated and upgrade schematic and pcboard

If you and bigger and better layout, then write to me asking.

Thank you Alexandru (Pop) that is helping a lot... a very important member from this Corporation you are.

regards,

Carlos
Attached Images
File Type: jpg TROYAN AMPL V 1.8 PCB.jpg (261.4 KB, 719 views)
Attached Files
File Type: pdf TROYAN AMPL V 1.8 SCH.pdf (86.5 KB, 453 views)
__________________
DxS, the best from the best...the cream from the cream, the best wide world ever made audio amplifier.
  Reply With Quote
Old 25th August 2010, 04:32 PM   #262
tantang is offline tantang  Indonesia
diyAudio Member
 
Join Date: Aug 2010
Location: indonesia
tanks for all....
  Reply With Quote
Old 6th September 2010, 09:42 AM   #263
hadita is offline hadita  Indonesia
diyAudio Member
 
hadita's Avatar
 
Join Date: Jun 2010
hey carlos why..the guide for set-up bias driver,....i'm interested to build this power amp..

tanks
  Reply With Quote
Old 6th September 2010, 10:30 AM   #264
diyAudio Member
 
Join Date: Apr 2007
Carlos,
With these powerful amplifiers you may have to modify the wife's clothes dryer to use as a load for testing. The main heater element in the dryer should be good for at least 1500 watts MINIMUM. Nice happy purely resistive load. Just what you need on a hot Brazilian summer -- more heat.

With the large number of outputs in this new layout I think you may have something that will stay together for many years. Those 2 ohm distortion tests look quite promising for something you have only been working on for a couple of months. Have you detecting any extremely high frequency oscillations with this layout? I would like to know what you have done to keep those in check.

Tad
  Reply With Quote
Old 6th September 2010, 10:48 AM   #265
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default It is a monster tryon... very strong.... i have not transformer to test it real

using 2 ohms and 1 ohm load...this was made using simulator only... voltage was reduce..supply voltage goes reducing while you reduce the output impedance not to have to increase the number of output pairs.... a good idea someone gave me...maybe Tinitus, i do not remember the one suggested the good idea.... same amplifier...but reducing supply voltage can face lower impedance loads.

The driver current is controled by the CCSs that are feeding these drivers... the bias control is increasing MORE the output...controling more the output, because drivers have a maximum fixed current fixed by the CCSs..one to each rail.

The idea is to adjust reading voltage over power emitter resistances..then 1 , 2 or 3 milivolts goes fine.... i have tested and i found 3 milivolts nice.... more current there, say 10mA, just increase heat and the amplifier starts to clip a little bit earlier (lower power than specified) because the "advanced" biasing point into the start up (iddle)

It is working fine.... problem is that windows goes shacking and enormous ventilation inside the speaker enclosure is breathing awfull MDF smell.... air pumped is big!

regards,

Carlos
__________________
DxS, the best from the best...the cream from the cream, the best wide world ever made audio amplifier.
  Reply With Quote
Old 6th September 2010, 05:05 PM   #266
hadita is offline hadita  Indonesia
diyAudio Member
 
hadita's Avatar
 
Join Date: Jun 2010
The idea is to adjust reading voltage over power emitter resistances..then 1 , 2 or 3 milivolts goes fine.... i have tested and i found 3 milivolts nice.... more current there, say 10mA, just increase heat and the amplifier starts to clip a little bit earlier (lower power than specified) because the "advanced" biasing point into the start up (iddle)

It is working fine.... problem is that windows goes shacking and enormous ventilation inside the speaker enclosure is breathing awfull MDF smell.... air pumped is big!

Sir,...i mean guide set-up/adjust driver bias with manual schematic step by step

thanks
Hadita

Last edited by hadita; 6th September 2010 at 05:08 PM.
  Reply With Quote
Old 6th September 2010, 06:58 PM   #267
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Please, make a search in this same thread..and check if i have not explained that

before...if not, then i will prepare these instructions to you.

regards,

Carlos
__________________
DxS, the best from the best...the cream from the cream, the best wide world ever made audio amplifier.
  Reply With Quote
Old 6th September 2010, 07:35 PM   #268
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center
Interesting Carlos, are boards available for the Troyan ..........
  Reply With Quote
Old 6th September 2010, 10:12 PM   #269
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default No....there are few people interested

we have pcb layout as you know.... good ones made by Alex mm...but boards, or group buy or something alike....negative!

regards,

Carlos
__________________
DxS, the best from the best...the cream from the cream, the best wide world ever made audio amplifier.
  Reply With Quote
Old 7th September 2010, 06:53 PM   #270
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center
Carlos ,

Found the outputs at Mouser, these should work , correct ? ..



http://ca.mouser.com/Search/Refine.a...yword=mjl1302a

http://ca.mouser.com/Semiconductors/...l3281a&FS=True


Do we have to use matched transistors ?


Regards,

Last edited by a.wayne; 7th September 2010 at 06:57 PM.
  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
zeta 500 watts n-channel amp pcb need ashokavarthanan Solid State 0 1st October 2007 03:10 PM
Fender/Sunn SA6520P 6 channel powered mixer 520 watts dhardinger Instruments and Amps 0 12th April 2007 11:10 PM


New To Site? Need Help?

All times are GMT. The time now is 08:48 AM.


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