choke for the power supply - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 26th June 2007, 12:40 PM   #1
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
Default choke for the power supply

I was looking at kk-pcb.com and they sell several pcbs for the power supply.

http://www.kk-pcb.com/power-4.html

Can someone point me to manufacturer's site for a choke that can handle 35A?

The largest I've seen is from Hammond and they were only up to 10A.

Thank you.
  Reply With Quote
Old 26th June 2007, 01:38 PM   #2
diyAudio Member
 
Stefanoo's Avatar
 
Join Date: Apr 2006
Location: italia - ora USA -WI
choke air core?

interesting question...i remeber i posted it once without any reguarding answer.

Let's see.

I actually need a air choke 2.2mH (with no more than 0.38mohm) that can handle 25-30A.

I remember somebody suggesting me to build one bymyself... it could be a suggestion as well
__________________
Stefano
  Reply With Quote
Old 26th June 2007, 01:48 PM   #3
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
Quote:
Originally posted by Stefanoo
choke air core?
aren't those used for speakers?

I was looking at an electronics catalog months ago and I found different type of choke/inductors. There's RF, EMI, ferrite bead and many others.

I have a feeling you can't just use one type of inductor for power supply filtering.
  Reply With Quote
Old 26th June 2007, 01:50 PM   #4
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
there's something called common-mode chokes and I've seen people used it in tube amps. look at lundahl.se

anyway, there a 4.4mH 5A cmc in alliedelec.com. not sure if the current rating is enough for your purpose.
  Reply With Quote
Old 26th June 2007, 02:09 PM   #5
diyAudio Member
 
Stefanoo's Avatar
 
Join Date: Apr 2006
Location: italia - ora USA -WI
__________________
Stefano
  Reply With Quote
Old 26th June 2007, 02:37 PM   #6
Apex Jr is offline Apex Jr  United States
diyAudio Member
 
Join Date: Jun 2002
Location: Torrance, Calif
I have some 8 mH at 16 Amp Toroid chokes

www.apexjr.com/images/AVEMCOMAGNETICS.jpg
click on picture for larger size

There $20.00 ea and weigh 7 lbs each

Steve @ Apex Jr.
  Reply With Quote
Old 26th June 2007, 02:56 PM   #7
diyAudio Member
 
Stefanoo's Avatar
 
Join Date: Apr 2006
Location: italia - ora USA -WI
Is there any air core choke that can handle 22-25A?

As far as i know air core, compared with iron core has a better sound eather used on the loudspeaker filter, output zobel network or power supply clc filter....or whatever.

I just would like to know if there are chokes with this specifics o if it's possible to make chikes like that....i would personally prefer to find something well made personally
__________________
Stefano
  Reply With Quote
Old 26th June 2007, 11:04 PM   #8
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
Quote:
Originally posted by Stefanoo
Is there any air core choke that can handle 22-25A?

As far as i know air core, compared with iron core has a better sound eather used on the loudspeaker filter, output zobel network or power supply clc filter....or whatever.

are you saying one can use speaker inductors in power supplies?

There are different kinds of chokes/inductors. And I believe you can't just use one type can be applied for another application.
  Reply With Quote
Old 26th June 2007, 11:37 PM   #9
diyAudio Member
 
Join Date: Dec 2004
Location: Jakarta
Send a message via Yahoo to darw82
Quote:
Originally posted by Stefanoo
Is there any air core choke that can handle 22-25A?:

Sure, air core choke will never saturate. The only limitation in air core choke is the wire. The larger the wire diameter, the more current it can handle.
  Reply With Quote
Old 26th June 2007, 11:53 PM   #10
Magura is offline Magura  Denmark
diyAudio Member
 
Magura's Avatar
 
Join Date: Oct 2003
Location: Denmark, Viborg
Sure an air core can handle 25A if the wire gauge is big enough. The trouble starts when you want to buy such off the shelf.....that is as far as I know a "no can do" situation.

I have made quite many such powerfull inductors, they're big, and very expensive these days, as the copper price has trippled over the last couple of years.

So if you feel like letting go of like at least 80 EUR a piece, keep searching for a manufacturer, otherwise just go for a couple of the toroid chokes from apex.jr in parallel.

Magura
__________________
Everything is possible....to do the impossible just takes a little while longer.
www.class-a-labs.com
  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
Choke regulated power supply for S/S amp Matt Rowland Solid State 31 22nd March 2009 01:58 PM
choke for an 8v power supply jarthel Parts 0 9th May 2007 02:12 AM
DC Choke for power supply senee Power Supplies 8 21st March 2005 09:05 PM
Choke power supply supernet Everything Else 1 12th May 2002 11:33 PM


New To Site? Need Help?

All times are GMT. The time now is 02:27 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