RE: [SI-LIST] : inductor

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From: KokTongTHAM (kt_tham@uti2000.co.jp)
Date: Tue Oct 03 2000 - 01:07:35 PDT


Dear Ken & the rest of the SI gurus,

It seems that I couldn't find the e-mail discussion between you and Charles
mentioned in your previous mail and I was hoping that you could forward it
to me.

As for the rest of the SI gurus, I would like to thank all of you for your
replies regarding the issue above.

Regards,
KTTHAM

At 午前 10:00 00/09/29 -0600, you wrote:
>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:kt_tham@uti2000.co.jp]
>Sent: Friday, September 29, 2000 12:49 AM
>To: Ron Miller; Ken.Cantrell@srccomp.com
>Cc: si-list@silab.eng.sun.com
>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 $B8aA0(B 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: si-list@silab.eng.sun.com
> > > 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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