OPS topology - 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 19th May 2010, 05:19 PM   #1
diyAudio Member
 
Join Date: Dec 2009
Location: Brussels
Lightbulb OPS topology

Hello Everyone,
I woud like to know more about the next choice I need to make for an OPS design.

It will be a class B amp thats for sure.

But :

1) BJT or MOSFET ? It would be MJ15003/4 in the first case or 2SJ162/2SK1058 in the mosfet case.

2) What topology? emitter follower / source follower or Complementary feedback or triples or ... ?

3) In all cases how do link the OPS best to the VAS? Bufferstage? What driver or predriver components to use?

Where do I have to watch out for !?

The first part of the amp is high end no compromises : mirror image, current mirror, darlington + cascoded VAS with Temporal Miller Compensation and a CMCL to solve the VAS Iq setting which will be set at around 20mA....output power will be set for around 250W into 8ohms and able to run 4ohm loads too.

I thought this info might be important to know if one has to choose an OPS config.

I hope to receive founded information but mere opinions are welcome too but in that case state clearly it is an opinion...

Thnx everyone

Olivier
  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
anyone seen this OPS before? gain Solid State 1 14th April 2008 07:39 PM
Bias Generator for Source Follower OPS Pwoida Solid State 2 8th September 2005 02:22 AM
Need an all NPN (Quasi) ops power amp JojoD818 Solid State 18 25th December 2003 04:04 PM
Aleph OPS as a differential amplifier. Possible? blschuler Pass Labs 11 26th January 2002 05:50 PM


New To Site? Need Help?

All times are GMT. The time now is 06:49 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