LC Audio low noise DC power supply - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies

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 13th March 2010, 02:52 PM   #1
VT67 is offline VT67  Belgium
diyAudio Member
 
VT67's Avatar
 
Join Date: Jun 2004
Location: Belgium
Default LC Audio low noise DC power supply

I was wondering if this would be a good alternative to replace the wall-wart of a Squeezebox Duet. Anybody here who has some experience with this power supply.

L C Audio Technology / Low-noise Regulator

Regards
  Reply With Quote
Old 13th March 2010, 03:27 PM   #2
diyAudio Member
 
Join Date: Feb 2009
Hello!

First post here!
I've built this power supply for an active filter: big noise at négative output rail! And with +/- 15Vac in, the poor NE 5532 will die quickly with no load: select +/-24V OPAmp like OPA2604.

Regards

Didier
  Reply With Quote
Old 14th March 2010, 10:22 AM   #3
diyAudio Member
 
Join Date: Feb 2010
Location: Bucharest
Send a message via Yahoo to Th3 uN1Qu3
It looks a little complicated to me. I'd just go with the good old LM317 and LM337. There was a document around with a study on optimum capacitors for those regulators, but i don't remember where it was (i'm sure people here know it though). If no one else remembers it i'll look around for it.
  Reply With Quote
Old 16th March 2010, 07:50 PM   #4
diyAudio Member
 
Join Date: Mar 2007
Quote:
Originally Posted by Th3 uN1Qu3 View Post
It looks a little complicated to me. I'd just go with the good old LM317 and LM337. There was a document around with a study on optimum capacitors for those regulators, but i don't remember where it was (i'm sure people here know it though). If no one else remembers it i'll look around for it.
Yes LM 317 / 337 are old but not good. Discret regulation sounds 10 times better.
  Reply With Quote
Old 16th March 2010, 08:00 PM   #5
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Quote:
Originally Posted by Beepbeep57 View Post
Hello!

First post here!
I've built this power supply for an active filter: big noise at négative output rail! And with +/- 15Vac in, the poor NE 5532 will die quickly with no load: select +/-24V OPAmp like OPA2604.

Regards

Didier
Did you built it properly? I have a hard time to believe that the NE5532 would die if you had a proper supply voltage. I can see the low margin though.
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy. Still time for signing up.
  Reply With Quote
Old 17th March 2010, 03:32 PM   #6
diyAudio Member
 
Join Date: Dec 2005
Location: Kuala Lumpur
No filtering on the op-amp power lines. High frequency noise on the mains will go straight through this
I hope that the trimmer is not microphonic
  Reply With Quote
Old 17th March 2010, 06:01 PM   #7
diyAudio Member
 
Join Date: Feb 2009
Hi peranders.

I naturally think of having realized the assembly correctly! Concerning the NE5532, it supports at most + /-22V, thus with 15Vac, we are close to his maximal voltage, where from the risk of strain.
  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
LC Audio Predator power supply. mattjk Swap Meet 3 26th December 2004 04:57 PM
LC Audio Predator Power Supply. mattjk Swap Meet 3 24th November 2004 06:10 AM
Help me regarding very low Supply Ripple output noise DC volume control unit electronist Parts 0 31st December 2003 09:29 AM
LC Audio ZAPpulse - power supply Stefan B Solid State 8 8th April 2003 08:48 PM


New To Site? Need Help?

All times are GMT. The time now is 02:49 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