Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

Wide band Common mode chokes by Murata
Wide band Common mode chokes by Murata
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 27th June 2003, 12:37 PM   #1
Dr.H is offline Dr.H
diyAudio Member
 
Join Date: Apr 2002
Default Wide band Common mode chokes by Murata

Wide band Common mode chokes by Murata


Hello all,

Has anyone here tried the wide band common mode mode chokes made by Murata? 100kHz to 1GHz!!, about US$3 each...

I'll be looking at trying sopme on the DC power lines to my dac. Will report back.

Ryan
  Reply With Quote
Old 28th June 2003, 12:34 AM   #2
weinstro is offline weinstro  United States
diyAudio Member
 
weinstro's Avatar
 
Join Date: May 2003
Location: N. Cal
Default Wide-band common mode filters

If you want to understand more about what these things do, visit http://www.mag-inc.com/ and select "Library". You can download some really nice articles on ferrite material selection, common-mode filter design, etc. There's even a software program available.

There's more to the choke than the bandwidth over which the material is effective. Max current and inductance are the primary specs of interest. For $3, you might be looking at parts that will saturate even with a low current drawing appartus like a CD player.

Second, the material selection depends in part on what kind of noise you have that you want to remove. Some material types are going to be more effective over certain frequency ranges than others. None are going to offer ruler flat noise attenuation across the freq. bandwidth mentioned. Besides Magnetics, there are many other ceramic/ferrite core manufacturers that will be happy to indulge you with free information.

Regards,

Rob
  Reply With Quote
Old 3rd July 2003, 03:29 PM   #3
Dr.H is offline Dr.H
diyAudio Member
 
Join Date: Apr 2002
Default Data from Murata

BNX-0002 is rated for 10 amps (!!!) and has a rated voltage of 50V, tested to 125V DC. Despite these impressive numbers, it measures 12 mm by 11mm...

Trying it in a CDP power supply (TDA1541 dac, 1 bnx-0002 in each of +5, -5 and -15 lines) gave a subtle but worthwhile improvement in what I can only describe as emotiveness. Baically the thing sounded more musical, more emotional. Horrible description I know but that what I heard. I'll do further listening.
I was expecting more detail, not sure I heard much of that.
  Reply With Quote

Reply


Wide band Common mode chokes by MurataHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
common-mode chokes jarthel Tubes / Valves 6 11th February 2008 03:31 PM
Common-mode EI PS Chokes rdf Tubes / Valves 14 17th June 2007 08:36 AM
Common Mode Chokes for Heater Supplies ppereira Tubes / Valves 7 29th January 2006 01:45 PM
Source for common mode chokes abj1 Tubes / Valves 7 24th June 2005 06:31 AM
Common mode chokes Dr.H Digital Source 1 24th July 2002 04:47 PM


New To Site? Need Help?

All times are GMT. The time now is 09:48 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki