[SI-LIST] Re: How to use common mode chock to elimate Common-mode noise ?

  • From: steve weir <weirsp@xxxxxxxxxx>
  • To: binchuan2000@xxxxxxxxxxxx, si-list@xxxxxxxxxxxxx
  • Date: Thu, 09 Oct 2003 09:56:48 -0700

Binchuan, a good common mode choke has:  a high common mode impedance, and=
=20
a low differential impedance.  It doesn't eliminate common-mode noise, but=
=20
it does attenuate it, without imposing much loss on the desired=20
differential signal.

Regards,


Steve.
At 08:57 AM 10/9/2003 +0000, =AA=FC=A5=C8 wrote:

>    Dear all,
>
>    I have one question from Ethernet design of Transformer which was
>    said could eliminate Common-mode noise. But I saw its equivalent
>    circuit designed just like two Inductance, so I have no idea about
>    why Transformer can eliminate Common-Mode noise?
>
>    Could someone help me to clarify this question ?
>
>    Sincerely your,
>
>    Binchuan.Wang
>
>
>------------------------------------------------------------------
>To unsubscribe from si-list:
>si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
>or to administer your membership from a web page, go to:
>//www.freelists.org/webpage/si-list
>
>For help:
>si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>List archives are viewable at:
>                 //www.freelists.org/archives/si-list
>or at our remote archives:
>                 http://groups.yahoo.com/group/si-list/messages
>Old (prior to June 6, 2001) list archives are viewable at:
>                 http://www.qsl.net/wb6tpu
>


------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List archives are viewable at:     
                //www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages 
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu
  

Other related posts: