Would you like to be able to calculate multiple layers at a single time?
Would you like to be able to change copper/dielectric/trace width and
see how it affects the impedance?
Wouldn't you like to be able to change all of these and see the overall
thickness?
This and many more calculators and utilities all in one program
http://www.pcbdr.com/
Direct download/online use. (Try it out online. It's free)
http://home.hiwaay.net/~robdne/files/Beta%20ResourceV4.xls
Chris Robertson
Author "PCB Designer's Reference"
[log in to unmask]http://www.amazon.com/exec/obidos/tg/detail/-/0130674818/qid=1050066233/sr=1-2/ref=sr_1_2/102-6322169-5005731?v=glance&s=bookshttp://search.barnesandnoble.com/booksearch/isbnInquiry.asp?userid=31IA2SZUEK&isbn=0130674818&itm=4http://www.booksamillion.com/ncom/books?id=2500661345456&pid=0130674818
----- Original Message -----
From: Ray Dwyer
To: [log in to unmask]
Sent: Thursday, September 11, 2003 7:45 AM
Subject: [DC]
Greetings Ya'll
I recived a number of request for info about the impedance calucator. So here is my attempt to give honor to where honor is due. The contribution by UltraCAD Inc. has been note worthy. They have a number of items worth reading. The umr.edu has an on-line calulator the work really well also.
http://www.emclab.umr.edu/pcbtlc/http://www.ultracad.com/
Remember 9/11,
Ray Dwyer
972-371-4046
Maxim
4401 Beltwood Parkway
Dallas, Tx. 75244
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Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
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