uPC1237/NTE7100 - Page 4 - 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 10th May 2008, 06:58 PM   #31
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
Default Re: Hi!

Quote:
Originally posted by zeonrider
@janneman, Put schematic if you have!?

Regards zeoN_Rider

I'm sorry, I can't freely post the schematic but the complete article is downloadable for 1.20 euro from here:

http://www.elektor.com/magazines/200...s.427862.lynkx

Jan Didden
__________________
I won't make the tactical error to try to dislodge with rational arguments a conviction that is beyond reason - Daniel Dennett
Check out Linear Audio Vol 7!
  Reply With Quote
Old 10th May 2008, 10:18 PM   #32
paulb is offline paulb  Canada
diyAudio Member
 
Join Date: Jun 2001
Location: Calgary
Here's the schematic from the UPC1237 datasheet.
Attached Images
File Type: gif upc1237-cct.gif (26.3 KB, 1507 views)
  Reply With Quote
Old 4th April 2010, 02:56 AM   #33
diyAudio Member
 
Join Date: Apr 2010
thank you. I need schemas for uPC1237.
  Reply With Quote
Old 12th February 2011, 04:50 AM   #34
diyAudio Member
 
Join Date: Feb 2008
THIS IS GOOD BUT I ALSO USE TA7317 WHICH IS ALSO GOOD TRY IT
  Reply With Quote
Old 7th May 2012, 03:36 AM   #35
diyAudio Member
 
Join Date: May 2012
Hola a todos; Por favor si alguien tiene el diagrama interno y un circuito de aplicacion con el upc1237H .
Estoy reparando un Amplificador sansui A-1001 si alguien tiene el circuito seria grandioso.
Desde ya mucchas gracias.
joaquin horacio

Quote:
Hello everyone, Please if anyone has the internal diagram and application circuit with upc1237H.
I'm repairing a sansui amplifier A-1001 if anyone has the circuit would be great.
From mucchas and thanks.
joaquin horacio

Last edited by wintermute; 7th May 2012 at 03:41 AM. Reason: added translation from google translate
  Reply With Quote
Old 7th May 2012, 03:43 AM   #36
just another
diyAudio Moderator
 
wintermute's Avatar
 
Join Date: Aug 2003
Location: Sydney
Blog Entries: 22
Joaquin, this is an english speaking forum. Please provide an English translation if you post in Spanish.

Quote:
Joaquín, este es un foro de habla Inglés. Por favor proporcione una traducción al Inglés si usted publica en español.
Google Translate
__________________
Any intelligence I may appear to have is purely artificial!
Some of my photos
  Reply With Quote
Old 7th May 2012, 05:50 AM   #37
diyAudio Member
 
Bksabath's Avatar
 
Join Date: Dec 2007
I have been using the NTE7100 since last August
So far my speakers have survived a lot of tinkering with MY F5
The SCH I use is similar to the one in post 32
Only thing you may want to consider is same relays designed on purpose for the job.
They must be DC rated as the AC rating of the contacts is meaningless
This is what I use
Loudspeaker relay - toroidal-transformer.com
  Reply With Quote
Old 9th May 2012, 02:49 AM   #38
diyAudio Member
 
Join Date: May 2012
Hi all, I'm repairing an amplifier Sansui A-1001 does anyone have the circuit diagram?.
The source has the upc1237H and was offered the upc127HA is it the same?.

Thank you very much for your help.
  Reply With Quote
Old 27th December 2012, 01:52 PM   #39
ceteras is offline ceteras  Romania
diyAudio Member
 
Join Date: May 2010
I know this was a long time ago...

Quote:
Originally Posted by jan.didden View Post
So, let me get this straight then. Because you fear that 10 years from now there is a chance you can't get a uPC1237, you think it is *better* to built a circuit from discretes today?

That's Ok, but I just thought you really meant *better* in terms of performance.

Jan Didden
... but here we are 4 years later, and I can't find this chip at the two distributors I usually buy from: Farnell and TME.
I had one CA1237HA in a project, it died, now I can't find another one.
I'll try to replace it with a discrete transistor based circuit.

LE:
I'm sure I can find lots of them on ebay, but most of them are fake/poor_quality just like the one that died.

Last edited by ceteras; 27th December 2012 at 01:54 PM. Reason: Forgot to say something.
  Reply With Quote
Old 27th December 2012, 02:39 PM   #40
paulb is offline paulb  Canada
diyAudio Member
 
Join Date: Jun 2001
Location: Calgary
Mouser Electronics (North America) have a few NTE7100 left - a direct replacement.
  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
Question on uPC1237 Buzzy Solid State 18 3rd August 2008 01:22 AM
Upc1237 Ic d3imlay Solid State 3 7th February 2008 12:14 PM
upc1237 circuit diagram.. clovi_kate Solid State 1 4th May 2007 10:16 AM
UPC1237 IC Amp Protector matt09 Chip Amps 5 2nd November 2006 06:59 PM
Problems with UPC1237 Risto80 Solid State 4 27th December 2004 02:38 AM


New To Site? Need Help?

All times are GMT. The time now is 04:19 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