[SI-LIST] Re: UltraCAD ESR and Bypass Capacitor Caculator

  • From: "Muranyi, Arpad" <arpad.muranyi@xxxxxxxxx>
  • To: <si-list@xxxxxxxxxxxxx>
  • Date: Tue, 12 Aug 2003 13:07:12 -0700

Chris,

They gave a pretty good description of what it was made for and why
earlier in this thread.  Look it up in the archives.  And I second
Scott, let's put this thread behind us, please!

Arpad
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

-----Original Message-----
From: Scott McMorrow [mailto:scott@xxxxxxxxxxxxx]
Sent: Tuesday, August 12, 2003 12:59 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: UltraCAD ESR and Bypass Capacitor Caculator


Chris,
Go get'm.
I'm bored and tired of this thread.

scott


Chris Cheng wrote:

>Then what's the use of it if it can't take the placement into =
consideration
>and calculate loop inductance of the leads/pads of the caps in the PCB =
which
>I think will easily dominate over the ESL of the cap ?
>
> -----Original Message-----
>From:  Doug Brooks [mailto:doug@xxxxxxxxxx]=20
>Sent:  Tuesday, August 12, 2003 9:13 AM
>To:    si-list@xxxxxxxxxxxxx
>Subject:       [SI-LIST] Re: UltraCAD ESR and Bypass Capacitor Caculator
>
>While I've enjoyed the entire discussion under this heading, I feel =
like I=20
>have to say once again that the UltraCAD calculator says NOTHING at all =

>about placement. THAT discussion picked up under this heading some how. =
Our=20
>calculator is just one (repeat "one") way to calculate a a complex=20
>impedance function.
>
>Doug
>
>At 03:56 PM 8/12/2003 +1000, you wrote:
> =20
>
>> it may be a good idea to put
>>   =20
>>
>
>Doug Brooks' new book, "Signal Integrity Issues and Printed Circuit =
Board=20
>Design" has just been released by Prentice Hall. See details and =
ordering=20
>info at www.ultracad.com
>________________________________________________________________________=
____
>__
>
>
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--=20
Scott McMorrow
Teraspeed Consulting Group LLC
2926 SE Yamhill St.
Portland, OR 97214
(503) 239-5536
http://www.teraspeed.com




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