My Power Conditioner redesign - 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 4th June 2008, 10:15 PM   #1
pjpoes is offline pjpoes  United States
diyAudio Member
 
Join Date: Jan 2005
Location: New York
Send a message via AIM to pjpoes
Lightbulb My Power Conditioner redesign

Not sure where to put this, so I decided I would just share it here. It sort has to do with power supplies. I took my old Welborne Labs Gatekeeper X1 and modified its design for better filtration. Since it was getting on 5+ years old, I first replaced the MOV's, as they probably needed it. The design follows a common design available on the internet, but uses Welborne Labs inductor method, which should offer lower resistance and less current limiting. Normal designs use inductors in the signal which often are limited in current capacity to something like 5-10 amps, maybe 12 if you are lucky. Welborne's method uses a string of ferrite beads held together in a tube with heatstrink, and the power wires run through these beads. Jon Risch notes in his design to use inductors rated at between 50 and 100uH's, and my primary concern with the Welborne method, was that inductance would not be high enough. If 3"s of beads could create that much inductance, why wouldn't more people do it, right? Well I measured things with an LCR, and sure enough, they are high enough. I measured roughly 75uH's of inductance. In Jon's design, there are capacitors running from H to G and N to G, as well as H to N. However, the original Welborn only had one large 1uf x rated cap from H to N. I decided to put some .1uf caps from H to G and N to G, then the 1uf from H to N, and a .01uf cap at each outlet bank. I also rewired it with 10 guage continuous cast copper wire and a Teflon dielectric. I had it, figured it couldn't hurt things.

Click the image to open in full size. Click the image to open in full size. Click the image to open in full size.

Currently I have my main amplifier plugged into it, but not my 3 channel ht amp (It has an almost identical circuit and very robust power supply, it doesn't need it), as well as my dvd/BR player, pre/pro, and record player. I found it got rid of some noise I had in the background compared to before, but otherwise found the difference very subtle, at best. I've been told that Mundorf has some excellent X rated caps I might want to try, so maybe if I feel like throwing a lot of money on caps for a conditioner, I may give it a shot. However, I think the next step with be another string of ferrite beads, to raise the inductance to around 120uH's+.
  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
Power Line Conditioner jacquesl Power Supplies 69 22nd November 2010 08:53 AM
UCD as power conditioner Daveis Class D 3 28th October 2006 08:39 AM
DIY power conditioner? leadbelly Power Supplies 8 14th March 2006 03:09 PM
power conditioner diram6 Power Supplies 0 2nd December 2005 04:10 AM
power conditioner diram6 Parts 0 2nd December 2005 03:06 AM


New To Site? Need Help?

All times are GMT. The time now is 07:06 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