Loudspeaker protection circuit - 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 2nd April 2008, 06:28 AM   #1
diyAudio Member
 
Join Date: Mar 2008
Default Loudspeaker protection circuit

hi, i am looking for "Loudspeaker protection circuit "

thank you.
  Reply With Quote
Old 2nd April 2008, 06:50 AM   #2
jormajj is offline jormajj  Finland
diyAudio Member
 
Join Date: Nov 2002
Location: Finland
http://sound.westhost.com/project33.htm
  Reply With Quote
Old 2nd April 2008, 07:20 AM   #3
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
If yu can find upc1237 chips, you can follow the schematic in the datasheet (available through google)
  Reply With Quote
Old 2nd April 2008, 07:23 AM   #4
diyAudio Member
 
Join Date: Mar 2008
Default thanks for address

hi Nordic, thank you for your help. i am not good in electronics. its looks like not comlete circuit. i really didn't understand this web. thank you again for your help.
  Reply With Quote
Old 2nd April 2008, 07:28 AM   #5
diyAudio Member
 
Join Date: Mar 2008
Default upc1237

upc1237 not available in here. thank you.
  Reply With Quote
Old 2nd April 2008, 07:32 AM   #6
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Default Re: thanks for address

Quote:
Originally posted by space2000
hi Nordic, thank you for your help. i am not good in electronics. its looks like not comlete circuit. i really didn't understand this web. thank you again for your help.
What did you no understand and what sort of protection do you need? What do you want to protect the speaker against?
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 2nd April 2008, 11:46 AM   #7
kimbo is offline kimbo  Australia
diyAudio Member
 
kimbo's Avatar
 
Join Date: Mar 2004
Location: Melbourne
If you are "...not good in electronics' you could try a kit such as this
http://www.jaycar.com.au/productView...=&SUBCATID=557

Universal Speaker Protection and Muting Module Kit from Silicon Chip magazine July 2007
  Reply With Quote
Old 5th April 2008, 02:28 AM   #8
ddanbo is offline ddanbo  Canada
diyAudio Member
 
Join Date: Jan 2006
Location: Edmonton, AB
Couple of threads here:

Loudspeaker Protector


Loudspeaker Protector, my version
  Reply With Quote
Old 5th April 2008, 09:55 AM   #9
d3imlay is offline d3imlay  United States
diyAudio Member
 
Join Date: Sep 2004
Location: Ohio
Default Re: upc1237

Quote:
Originally posted by space2000
upc1237 not available in here. thank you.
I built a drop in output relay board for Phase Linear 400's using the UPC1237. I love this chip. So easy to work with. They only work up to 60VDC. The Phase Linear rails run at about 75VDC so I used a 25volt 5watt zener leaving me with a 50 Volt power supply. I'm using a 48VDC relay and the zener doesn't even get warm.

I nearly panicked when I started having trouble finding the chips. Then I found them at Futurlec and ordered 20 as I thought they were suspect. Futurlec site It took about 2 weeks for them to get here. In the mean time MCM got a shipment in and I bought all 50 they had. I haven't tried the ones from Futurlec yet, but I assume they'll work.

Attached Images
File Type: jpg horizontal view resize.jpg (94.9 KB, 752 views)
  Reply With Quote
Old 5th April 2008, 10:21 AM   #10
d3imlay is offline d3imlay  United States
diyAudio Member
 
Join Date: Sep 2004
Location: Ohio
Quote:
Originally posted by jormajj
http://sound.westhost.com/project33.htm

I've used this board and it works fine. Care is required as the tracks are close to components and there is no solder mask. Size matters when it comes to cost and so does solder mask.
  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
Loudspeaker protection... Skorpio Solid State 12 23rd January 2007 01:10 PM
Trouble with speaker protection circuit (Randy Slone's circuit) whalefat Solid State 3 13th April 2005 10:13 AM
loudspeaker protection and muting circuit trouble :( Mattyo5 Solid State 1 21st March 2004 02:18 AM


New To Site? Need Help?

All times are GMT. The time now is 04:55 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