Oscillating DoZ - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 30th January 2004, 03:57 AM   #1
rchua77 is offline rchua77  Singapore
diyAudio Member
rchua77's Avatar
Join Date: Jul 2003
Location: Back in Singapore
Default Oscillating DoZ

Hi Guys,

I have a slight problem with my DoZ oscillating. the R10 (Zobel network resistor) burns to a crisp when i'm trying to bias the Iq.

I have tried connecting a 22pF capacitor across the base and collector of Q1 (BC559) and it still oscillates.

Would the oscillation be caused by too many output stages ? I'm using 8 x MJ21196 BJTs with 0.2ohm emitter resistors. Strangely enough, the other channel bias fine and works perfectly.

Any suggestions would be greatly appreciated.
  Reply With Quote
Old 30th January 2004, 10:07 AM   #2
diyAudio Member
Ultima Thule's Avatar
Join Date: Jan 2004
Location: Koskenkorva Land
Have U done any search?

Here is what I found when searching DoZ:

DOZ Smoking

ps: I have NOT red through that thread, thats your job!

Go back to your amp and do some more trial and error and return back with results/questions, ok?!
  Reply With Quote


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
6j4 oscillating? Klimon Tubes / Valves 2 18th January 2008 09:32 PM
PSU oscillating apolon34 Power Supplies 3 24th June 2005 02:20 PM
oscillating...always oscillating WoulYaShassu Solid State 30 9th April 2004 05:31 PM

New To Site? Need Help?

All times are GMT. The time now is 06:38 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2