turn-off transients with LM1875 - Page 2 - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 1st July 2003, 03:57 PM   #11
diyAudio Member
 
JOE DIRT®'s Avatar
 
Join Date: Apr 2003
Location: Brantford, ON
a cap across the switch contacts also helps...I use .01uf 250vac ceramic

DIRT®
  Reply With Quote
Old 1st July 2003, 04:12 PM   #12
fedde is offline fedde  Netherlands
diyAudio Member
 
Join Date: Jul 2002
Location: Eindhoven, the Netherlands
Send a message via ICQ to fedde
Or make mute switches for the speakers. The original GC has them too. I also found that an oscillation causes turn-off transients.

Fedde
__________________
http://www.fedde.nu, gainclone and non-oversampling DAC audio projects and kits...
  Reply With Quote
Old 2nd July 2003, 02:40 AM   #13
ashwin is offline ashwin  India
diyAudio Member
 
Join Date: Apr 2003
Location: Bangalore
Quote:
Originally posted by JOE DIRT®
a cap across the switch contacts also helps...I use .01uf 250vac ceramic

DIRT®
Yes, that's what finally worked for me. I tried a spice sim, and I found that a resistor in series with the cap (say 470n in series with 330ohm) brings down the spike drastically compared with just the cap. But in my actual amp the cap alone worked just fine.

Now I need to rig up a good EMI filter...
  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
Transients and Crossover Components discl Multi-Way 1 2nd March 2008 01:43 PM
LM1875 got turn-off thump??? Leolabs Chip Amps 9 17th December 2007 08:39 AM
Turn on/off transients Pierre Class D 60 9th January 2007 03:47 AM
Switch on Transients for GainClone dtm1962 Chip Amps 3 18th July 2003 11:30 AM


New To Site? Need Help?

All times are GMT. The time now is 07:09 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