Brother of Quasi - 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 14th October 2006, 03:05 AM   #1
quasi is offline quasi  Australia
diyAudio Member
 
quasi's Avatar
 
Join Date: Sep 2004
Location: Adelaide, Australia
Default Brother of Quasi

Conceptualised in the thread "Power Amp Under Development" here is the transistor output stage variant.

http://www.diyaudio.com/forums/showt...429#post946429

A version has already been built by fellow diy'er Kraft and this thread is dedicated to the development of this version.

Cheers
Quasi
  Reply With Quote
Old 14th October 2006, 03:10 AM   #2
quasi is offline quasi  Australia
diyAudio Member
 
quasi's Avatar
 
Join Date: Sep 2004
Location: Adelaide, Australia
Default The schematic

The schematic is of course very similar. Apart from the output stage other small changes were made to accomodate a workable layout.

Cheers
Q
Attached Files
File Type: pdf nchan bp sch 141006 1247.pdf (41.6 KB, 3842 views)
  Reply With Quote
Old 14th October 2006, 03:15 AM   #3
quasi is offline quasi  Australia
diyAudio Member
 
quasi's Avatar
 
Join Date: Sep 2004
Location: Adelaide, Australia
Default Board Layout - TO3 version

Here is the board layout. It retains the famous U-channel heatsink for the second stage transistors

Please check it before you build.

Cheers
Q
Attached Files
File Type: pdf nchan bp lay 141006 1251.pdf (61.8 KB, 2064 views)
  Reply With Quote
Old 14th October 2006, 03:17 AM   #4
quasi is offline quasi  Australia
diyAudio Member
 
quasi's Avatar
 
Join Date: Sep 2004
Location: Adelaide, Australia
Default And the tracks

Here are the tracks. This board also contains DC detection.

Cheers
Q
Attached Files
File Type: pdf nchan bp tracks141006 1251.pdf (35.5 KB, 1482 views)
  Reply With Quote
Old 14th October 2006, 03:18 AM   #5
poobah is offline poobah  United States
diyAudio Member
 
poobah's Avatar
 
Join Date: Nov 2005
I hate people that try to be quasi quasi...




NO CIGAR!
  Reply With Quote
Old 14th October 2006, 05:41 AM   #6
Leolabs is offline Leolabs  Malaysia
diyAudio Member
 
Leolabs's Avatar
 
Join Date: Dec 2004
Location: Bukit Mertajam
Send a message via MSN to Leolabs
Quote:
I hate people that try to be quasi quasi...
Why???Because you like to be symmetrical???
  Reply With Quote
Old 14th October 2006, 09:01 AM   #7
edl is offline edl  Hungary
diyAudio Member
 
edl's Avatar
 
Join Date: Oct 2004
Hi,

Hmmm... Such high power amp without short-circut protection?!
Then it's not intended for PA usage... Then for what?
  Reply With Quote
Old 14th October 2006, 11:08 AM   #8
quasi is offline quasi  Australia
diyAudio Member
 
quasi's Avatar
 
Join Date: Sep 2004
Location: Adelaide, Australia
Quote:
Originally posted by edl
Hi,

Hmmm... Such high power amp without short-circut protection?!
Then it's not intended for PA usage... Then for what?
It is intended as a powerful high quality domestic power amp. The reason for this thread is because there have been requests (forum and email) for a varient of the mos design that used conventional power transistors, particularly TO3 types.

So here it is. Anyone who wants to build it and take advantage of TO3 devices they have laying around may do so. Or they can choose not to.

Cheers
Q
  Reply With Quote
Old 14th October 2006, 12:49 PM   #9
mikeks is offline mikeks  United Kingdom
Account Disabled
 
Join Date: Jun 2004
Location: Animal farm
http://www.diyaudio.com/forums/showt...42#post1023742
  Reply With Quote
Old 14th October 2006, 12:50 PM   #10
mikeks is offline mikeks  United Kingdom
Account Disabled
 
Join Date: Jun 2004
Location: Animal farm
http://www.diyaudio.com/forums/showt...28#post1022628
  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



New To Site? Need Help?

All times are GMT. The time now is 08:12 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