Recent Posts by Bil

INTERACTIVE SOFTWARE TO SOLVE CROSSTALK PROBLEMS

A link to this video demonstrating PCB cross-talk ended up in my mailbox the other day as I tend to stay on the mailing lists of the some of the high end CAD companies. There are some really interesting and powerful “mega-tools” that do things like plot noise density for decoupling analysis and extremely high…
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HOW CMOS WORKS: MOSFETS, JFETS, IGFETS AND MORE

CMOS opened the door for many if not most of the properties needed for today’s highly integrated circuits and low power portable and mobile devices. This really couldn’t happen until the speeds and current drive capabilities of CMOS caught up to the other technologies, but catch up they did. Nowadays CMOS Small Scale Integration (SSI)…
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COMMVEX 2015: WHAT HAPPENS WHEN COMMODORE USERS GATHER

I’m not getting any younger, in fact I’m getting older by the day.  This fact along with the fact that this year is the 30th anniversary of the Commodore C-128 and the original Commodore Amiga prompted me to attend this year’s CommVEx in Las Vegas lest I not be around for the next significant anniversary.…
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GATES TO FPGAS: TTL ELECTRICAL PROPERTIES

On the path to exploring complex logic, let’s discuss the electrical properties that digital logic signals are comprised of. While there are many types of digital signals, here we are talking about the more common voltage based single-ended signals and not the dual-conductor based differential signals. Single-ended Logic SignalI think of most logic as being in one…
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