Improving CD67's regulators? - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

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 25th January 2004, 10:44 PM   #1
diyAudio Member
 
Join Date: Feb 2002
Location: Canada
Default Improving CD67's regulators?

After much reading I'm contemplating on whether or not there is anything to be gained by replacing all three of my CD67s voltage regulators. I'm looking at replacing my 7805 with a clone of the LM317 Andrew Weeks illustrated on the acoustic.org.uk CD63 clock hack. After that I'd like to replace the 78M12/79M12 with a similar LM317/LM337 combo. Included below is all the necessary schematics for clarity's sake.

Regards,
Dan

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.
  Reply With Quote
Old 25th January 2004, 10:58 PM   #2
Pedja is offline Pedja  Serbia
diyAudio Member
 
Join Date: Jun 2002
Location: Belgrade
If you are about CD63/67 and regulators, better put more independent regulators for digital ICs. The main point of the mod you saw is in giving to the oscillator independently regulated supply.

Pedja
  Reply With Quote
Old 25th January 2004, 11:52 PM   #3
diyAudio Member
 
Join Date: Feb 2002
Location: Canada
I'm not going to do the clock hack itself because I already have a Kwak Clock v7 installed. I'm looking at borrowing ALW's LM317 idea and applying it to my 7805. I like the idea of improving all three of my 'on board' regulators for the sake of simplicity. If I can show a 'gain' with a few simple parts I think it would be a great contribution to DIY'ers like myself. The one's with modest skills and a modest budget.

Regards,
Dan
  Reply With Quote
Old 26th January 2004, 07:07 AM   #4
Zombie is offline Zombie  Sweden
diyAudio Member
 
Join Date: Feb 2003
Location: At home
Hello!
I can warmly recommend you to use a separate xformer/rectifying bridge to feed the digital regulators. You can fit it under the stiffening beam inside.
Cleaning up the +7-12V isn't such a bad idea either...
Cheers,
T
  Reply With Quote
Old 26th January 2004, 08:40 AM   #5
Banned
 
Join Date: Dec 2001
Location: Zamboanga, City of Flowers, Mindanao
Send a message via Yahoo to Elso Kwak
Lightbulb KF50BDT

Hi,
This guy is raving about the KF50BDT from ST.
http://java.audioasylum.com/cgi/m.pl...dt&r=&session=
Maybe an idea to try?
  Reply With Quote
Old 26th January 2004, 10:49 PM   #6
diyAudio Member
 
Join Date: Feb 2002
Location: Canada
Here is the PDF for the KF500 Series for the benefit of the forum.

Regards,
Dan

P.S. Thanks Elso!
  Reply With Quote
Old 26th January 2004, 11:27 PM   #7
eganz is offline eganz  United States
diyAudio Member
 
Join Date: Sep 2003
Location: MN
The New japan Radio NJM78XX regulators from digikey look promising too...
  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
Marantz CD67 - UK Spartacus Swap Meet 0 1st October 2008 03:47 PM
801/802 on marantz cd67 reddish75 Digital Source 1 25th September 2006 05:57 AM
new dac for my cd67 Drew.J.K Digital Source 7 27th June 2005 07:51 PM
Marantz CD67-SE aaronlubelski Digital Source 6 2nd May 2005 06:35 AM
Successfully Kwak'ed CD67 dantwomey Digital Source 2 11th January 2004 12:03 AM


New To Site? Need Help?

All times are GMT. The time now is 06:49 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