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 10th August 2006, 01:24 AM   #1
diyAudio Member
 
Sunsun22's Avatar
 
Join Date: Jul 2004
Location: Hong Kong
Default How to test noise level of PSU?

I have a multi-meter, a diy signal generator and an oscilloscope only.
  Reply With Quote
Old 10th August 2006, 01:38 AM   #2
diyAudio Member
 
Join Date: Jun 2006
Read this article.. Should help you.


http://tangentsoft.net/elec/psu-tests/
  Reply With Quote
Old 10th August 2006, 01:48 AM   #3
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
kinda depends upon the purpose to which the power supply is intended -- there is a real, real, real guru amongst the denizen of DIYAUDIOr's and that's janneman

but here's a start -- use a capacitatively coupled differential amplifier for the input -- for those measuring power supply noise where a precise ADC measurement is required you want to filter the supply over a 100 milliHertz to 10 Hertz bandwidth for a period of 10 seconds. take a look at the materials on Texas Instruments website for their TL431 shunt regulator for a circuit --
Jim Williams application notes at Linear Technology also have some really excellent suggestions. I guess if you have a really good scope you could look at the envelope over a 10 second interval.
  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
Very low level noise on CD880 tubee Digital Source 1 24th November 2008 10:26 PM
NTE flameproof - noise level? taj Parts 4 26th August 2007 02:02 AM
noise level hearing evaluation panson_hk Solid State 0 9th March 2007 12:42 AM
Noise level swaroopvg Chip Amps 0 11th July 2006 08:24 AM


New To Site? Need Help?

All times are GMT. The time now is 01:20 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