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From: "Hemon Dey"
Subject: Re: Chip Ferrites
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
Date: Wed, 23 Oct 2002 16:22:14 +1300
NNTP-Posting-Date: Wed, 23 Oct 2002 16:22:16 NZDT
You got me there, what's Tempest? do you have a link?
"Robert Baer" wrote in message
> Hemon Dey wrote:
> > Hello post,
> > I'm wondering if anybody out there knows much about ferrite beads and
> > ferrites. I'm making a custom module that has USB and RS232 devices in
> > The USB application note specifies the BLM18BB121SN from Murata which
> > 120 ohm impedance at 100Mhz. How important is this impedance rating? I
> > looking at getting a 75 ohm equivalent due to availability - does
> > see any problems doing this?
> > I can't find an app note anywhere on what ferrite values to attach to
> > RS232 lines (Rx,Tx, CTS, RTS) Any advice on the choice I should be
> > surely there must be a scientific way about it ...
> > Thanks for your help.
> > Hemon
> The only app i know of that may use ferrites for RS-232 lines is for
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