DC offset stability and operating point question. - 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 21st September 2004, 12:33 PM   #1
diyAudio Member
 
nobody special's Avatar
 
Join Date: Oct 2002
Location: USA
Default DC offset stability and operating point question.

Is it acceptable to use a resistor network in the current sourced front end of an amp to set the DC offset at the output? In other words, the operating point of the output stage is being set by the front end, which is biased with a current source and using trim pots to zero out the offset. Would I see too much drift with this type of setup? BTW, this is with a mosfet p/p class A amp with no global NFB. It's using a VGS multiplier to bias the output stage. What are your thoughts?
__________________
Steve
  Reply With Quote
Old 21st September 2004, 02:00 PM   #2
AKSA is offline AKSA  Australia
diyAudio Member
 
Join Date: Sep 2001
Location: Melbourne, Australia
Steve,

Works just fine.......

Hugh
__________________
Aspen Amplifiers P/L (Australia)
www.aksaonline.com
  Reply With Quote
Old 21st September 2004, 02:04 PM   #3
diyAudio Member
 
nobody special's Avatar
 
Join Date: Oct 2002
Location: USA
Cool. Thanks, Hugh!
__________________
Steve
  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
Calculating operating point of a DHT Pyre Tubes / Valves 2 26th February 2009 10:09 PM
SE amp: Please suggest a better operating point zobsky Tubes / Valves 34 21st September 2008 12:00 AM
Which point is right? for stability simulation!!! mclarenpingu Solid State 5 13th March 2008 10:20 AM
Best Operating point for a 2A3? sgerus Tubes / Valves 10 2nd August 2006 12:31 AM
really dumb question about SE 6bq5 operating point (triode) zobsky Tubes / Valves 5 10th April 2004 12:07 PM


New To Site? Need Help?

All times are GMT. The time now is 08:50 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