Ultracad freeware

These videos, encompassing nine lesson titles and over 7 hours of videos, cover all of the topics Doug's seminars have become famous for. Go here to learn more about these lessons. Our president, Doug Brooks, has written several articles and a series of columns for Printed Circuit Design magazine. He has also begun a series of web-based articles for Mentor Graphics.

For a list of the all Brooks' papers and articles, click here. Doug Brooks' and books published by Prentice Hall are available through bookstores. Click here and here to learn more about them, for ordering information, and to find Tables of Contents.

Don't miss these great resources. ISBN X and Calculator topics include transmission line impedance, crosstalk, relationships between trace current and temperature, and relating trace geometries width and thickness to equivalent wire gauge.

One calculator helps analyze the combined effects of bypass capacitor capacitance, inductance and therefore self-resonant frequency and ESR. Another calculator does differential impedance and replaces our original calculator, introduced many years ago, that has gained acceptance around the world.

Check out our calculator page here. Check out our simulations that we are now making available to the public. Sometimes our imagination runs away from us or maybe there are periods when we simply don't have enough to do. Read all about them here. Please sign our guestbook. Most have been freeware, a few have required a license for purchase. Here is our current offering. Click on any calculator name to be taken to a page that describes it more fully.

These calculators are now available in a single downloadable package. Click here to download the package. A single "universal" license is necessary for operation. All of these calculators are written in Microsoft Visual Basic. Some of these calculators may require supporting Microsoft files for operation.

Usually they are already on your system. But if not, they are included in the download package and can be installed locally. Here is the installation Readme. This calculator is multifunctional! This calculator has been upgraded to Version 3. This calculator graphs an impedance function for a power distribution system on a PCB with an arbitrary number of capacitors with arbitrary associated lead and mounting inductance and arbitrary ESR. This calculator will calculate factorials of any size tested to 10,,,!