without trimmer or bias. - 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 May 2007, 11:29 AM   #1
diyAudio Member
 
Join Date: Jun 2004
Location: manila
Default without trimmer or bias.

hi guys,

i wonder if there's a high power amp say 200w/8R rms that has no trimmer bias. i mean... just put on all the parts and that's it!

i think i've seen one of it in the net but lost the detail as our co
change my pc, if i recall it was a quasi comp, uses TL071 on the input and also a high end amp.

i've tried to make marcus m250 but no luck, i also made some
LM3886 chip amp but my brother took it so... nothing left for me
now. though, im a newbie and learning electronic stuff by making actual projects becomes my hobby, also i can etch my own pcb.

hope some of you guys can help me here... thanks!


john
__________________
norstar815
  Reply With Quote
Old 21st May 2007, 11:49 AM   #2
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
Why do you want such a thing? Setting bias is not hard. Just use a decent quality cermet trimmer.

The problem with poor bias control is that the sound will not be at it's best.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  Reply With Quote
Old 21st May 2007, 03:07 PM   #3
diyAudio Member
 
Jan Dupont's Avatar
 
Join Date: Apr 2003
Location: Copenhagen, Denmark
Send a message via MSN to Jan Dupont
A good trimmer is necessarry......
Or you can build an amp that uses Onsemi's Thermal Track output devices
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com
  Reply With Quote
Old 22nd May 2007, 03:59 AM   #4
Eva is offline Eva  Spain
diyAudio Member
 
Eva's Avatar
 
Join Date: Oct 2003
Location: Near the sea
Send a message via MSN to Eva
Plain class B does not need bias adjustment...
__________________
I use to feel like the small child in The Emperor's New Clothes tale
  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
Source for Tocos RA12P Trimmer masag Parts 1 17th October 2012 09:27 PM
Trimmer pot source? RobWilJr Tubes / Valves 7 31st May 2009 01:13 AM
Bad Trimmer or Bigger Problem? daggerlee Class D 0 9th July 2008 02:15 PM
Recommend a Trimmer Pot kptseng Solid State 8 21st March 2008 12:32 PM
digital potentiometer/trimmer ? ZERS Parts 3 31st January 2005 04:37 PM


New To Site? Need Help?

All times are GMT. The time now is 02:25 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