SOA protection - Page 2 - 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 January 2006, 12:48 AM   #11
Banned
 
Join Date: Mar 2005
Location: Australia
ok NP is coming to show you how, my two cents..
  Reply With Quote
Old 21st January 2006, 02:45 AM   #12
CBS240 is offline CBS240  United States
diyAudio Member
 
CBS240's Avatar
 
Join Date: Aug 2005
Location: K-town
It seems to me that it would be easier and cheaper in the long run to just over design the amp for what you are going to listen too. This would take out the potential of the elaborate protection circuits to affect the quality of the audio signal and keep it back to basics.

If SOA is such a problem for you, and you have no problem with making some sort of complex protection circuit, then maybe you should investigate class G (or maybe H) designs. I like G better because the top rail follows the audio and doesn't introduce HF switching noise. Perhaps Fets for the top rail and BJT's for the bottom?
__________________
All the trouble I've ever been in started out as fun......
  Reply With Quote
Old 21st January 2006, 11:55 AM   #13
diyAudio Member
 
Join Date: Dec 2005
Location: Kuala Lumpur
I have seen some unusual speaker designs (ribbon tweeters?) which fell to about 1R at 20kHz. Try overdesigning for that one. It seems crazy but actually measuring the output transistor status in real time is cheaper than more robust ( and more quantity) output transistors.
  Reply With Quote
Old 31st January 2006, 07:26 AM   #14
diyAudio Member
 
Join Date: Nov 2003
Location: Genova, Italy
hi all

Quote:
From Rods pages:
For the 3 ohm case, a reactive load (at 45 phase angle) can be simulated by using a 477uH inductor in series with the 3 ohm resistor (for a frequency of 1kHz)
thanks for the reference, Jens

Federico
  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
Need help with NAD amp! Goes in protection silversweden Car Audio 43 28th January 2014 05:44 PM
DC-protection? Skorpio Solid State 4 1st December 2007 09:09 AM
speaker protection (OR) overload protection myanmar Solid State 7 13th July 2006 08:21 AM
protection Dj BASS AMP Solid State 7 26th March 2003 09:53 AM


New To Site? Need Help?

All times are GMT. The time now is 02:24 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