Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

SSR for speaker protection?
SSR for speaker protection?
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 15th April 2019, 05:38 PM   #71
thimios is offline thimios  Greece
diyAudio Member
 
Join Date: Aug 2009
Location: Agrinion
Quote:
Originally Posted by prasi View Post
Hello thimios,
you never did speak to me about this!
Otherwise I would have made it earlier.
I stumbled here by chance while making APEX SSR protect.

Thanks to LKA for the design.

Still a rough design, need to see if binding post on a side can support PCB components. Otherwise , a hole for plastic standoff on the left side would provide necessary support for the PCB.

Regards
Prasi
Hi my friend!
I see you very busy and i don't want to stress you.
You are a pcb machine!
All the best for you and LKA
BTW if i will have the final schematic and the black&white pcb i can test this soon.

Last edited by thimios; 15th April 2019 at 05:44 PM.
  Reply With Quote
Old 16th April 2019, 12:44 AM   #72
jameshillj is offline jameshillj  Australia
diyAudio Member
 
Join Date: Feb 2005
Location: Melbourne
Hi everyone,
Is there a simple safe way to add a 'mute switch' to this circuit? (with maybe an indicator led too?)
  Reply With Quote
Old 16th April 2019, 06:45 AM   #73
prasi is offline prasi  India
diyAudio Member
 
prasi's Avatar
 
Join Date: Jan 2014
Location: Pune, India
SSR for speaker protection?
Quote:
Originally Posted by thimios View Post
Hi my friend!
I see you very busy and i don't want to stress you.
You are a pcb machine!
All the best for you and LKA
BTW if i will have the final schematic and the black&white pcb i can test this soon.
YOU can tell me anytime.
I will post black and white and the schematic, once I am done refining the design.
Pl note that this circuit is based on post no. 31 by LKA.

Regards
Prasi
__________________
My revamped site https://sites.google.com/site/analogdesign1234/
  Reply With Quote
Old 16th April 2019, 07:26 AM   #74
LKA is online now LKA  Europe
diyAudio Member
 
Join Date: Dec 2014
Quote:
Originally Posted by jameshillj View Post
Hi everyone,
Is there a simple safe way to add a 'mute switch' to this circuit? (with maybe an indicator led too?)
See post 58, overcurrent circuit can be used as MUTE also. Just connect latching switch to terminal X4.
  Reply With Quote
Old 16th April 2019, 08:31 AM   #75
jameshillj is offline jameshillj  Australia
diyAudio Member
 
Join Date: Feb 2005
Location: Melbourne
Ah, simple indeed and easy to implement - a double pole switch for the indicator led too - thanks
  Reply With Quote
Old 16th April 2019, 08:38 AM   #76
prasi is offline prasi  India
diyAudio Member
 
prasi's Avatar
 
Join Date: Jan 2014
Location: Pune, India
SSR for speaker protection?
Quote:
Originally Posted by LKA View Post
Hi, You can leave out D1,D2 (or short them out).The detection threshold will be lower. If you want more symmetrical detection, just short out D2.
Thank you LKA for your suggestions. I will keep them on the pcb for the present. One could short or just remove D2 as per his preference.
Regards
Prasi
__________________
My revamped site https://sites.google.com/site/analogdesign1234/
  Reply With Quote
Old 16th April 2019, 08:53 AM   #77
Harry3 is online now Harry3  Australia
diyAudio Member
 
Join Date: Mar 2005
Location: Sydney - Australia
Hi Prasi
We appreciate your work.
Is it possible to get rid of the link that goes from the Mosfet to the speaker, with a track?
  Reply With Quote
Old 16th April 2019, 08:57 AM   #78
LKA is online now LKA  Europe
diyAudio Member
 
Join Date: Dec 2014
Quote:
Originally Posted by prasi View Post
Thank you LKA for your suggestions. I will keep them on the pcb for the present. One could short or just remove D2 as per his preference.
Regards
Prasi
Another suggestion. Connect T5 collector to D3-D7 junction. C4 discharging will be quicker when AC is lost. (component numbering, post 65)
Check my last schematic, post 58.
  Reply With Quote
Old 16th April 2019, 09:32 AM   #79
OnAudio is offline OnAudio
diyAudio Member
 
OnAudio's Avatar
 
Join Date: Oct 2011
Interesting thread, have been playing around with using arduino analog pins to check for DC and resolve within 100ms one might say that that is too slow considering above presumably detects and resolves in 380us. The AC lp filter 100k + 10uf will feature a 3.3 volt zener across the capacitor to protect the arduino input, other pins will check temp, over current and short circuit featuring lean code and timer interrupts. output pins will shut off power and trigger speaker protection, plus printing out on LCD the protection event.

Yes the analog domain is faster, however the digital domain is still fast enough.
__________________
onaudio.herokuapp.com
  Reply With Quote
Old 16th April 2019, 09:59 AM   #80
thimios is offline thimios  Greece
diyAudio Member
 
Join Date: Aug 2009
Location: Agrinion
I think that the photovoltaic optocoupler is more faster than this cny...
  Reply With Quote

Reply


SSR for speaker protection?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
On speaker protection Keith Cary Chip Amps 3 9th February 2013 01:47 AM
speaker protection audiofan Solid State 0 19th February 2009 02:35 PM
speaker protection (OR) overload protection myanmar Solid State 7 13th July 2006 08:21 AM
FS: Niles HDS-6L speaker selector w/ speaker protection. Spasticteapot Swap Meet 0 27th May 2006 11:14 PM
Speaker Protection senee Solid State 0 17th May 2005 06:53 AM


New To Site? Need Help?

All times are GMT. The time now is 08:34 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki