From: Ken Cantrell ([email protected])
Date: Fri Sep 29 2000 - 09:00:11 PDT
THAM -
I refer you to the e-mail discussion that Charles and I had yesterday* about
the problems associated with placing a frequency dependent source
termination into the equation. As far as data, the better ferrite mfg's
have all the data that you need to make the appropriate selection (graphs of
Z vs F).
Ken
* If you can't find the e-mail, let me know and I will forward it to you.
-----Original Message-----
From: KokTongTHAM [mailto:[email protected]]
Sent: Friday, September 29, 2000 12:49 AM
To: Ron Miller; [email protected]
Cc: [email protected]
Subject: RE: [SI-LIST] : inductor
Dear Ken, Ron Miller, Charles and other SI gurus,
Thanks for answer my question.
First of all, I'll like to apologize to you and the rest of the SI Gurus
who have read my question regarding on using inductors on transmission
line. It was suppose to be ferrite bead instead of inductor. Sorry for the
confusion and misunderstanding.
Back to the question, how can ferrite bead reduce ringing? How it
works? What are the criteria in choosing the correct ferrite for certain
frequency? Are there any books or articles on usage of ferrite beads in
transmission lines that you know of?
Thanks
Regards,
KTTHAM
At 午前 11:20 00/09/28 -0700, you wrote:
>Hi
>
>I think the inductors that you are talking about are ferrite torroids
>rather than
>inducters, and they have an apparent resistive component as well as an
>inductive
>component which dampens oscillations.
>
>Ron Miller
>
>
> > -----Original Message-----
> > From: KokTongTHAM
> > Sent: Thursday, September 28, 2000 3:07 AM
> > To: [email protected]
> > Subject: [SI-LIST] : inductor
> >
> > SI Gurus,
> >
> > I have told by an EMI engineer about using inductors can reduce ringing
of
> > a transmission line effectively instead of series resistor. Can anyone
> > tell if this is true?
> > As far as I know, inductor can act as a filter to cut unwanted
harmonnics.
> > How do we chose the suitable value for the inductor?
> >
> > Thanks.
> >
> > Regards,
> > KTTHAM
> >
> >
> >
> >
> >
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