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 Beyond Design: AC/DC is Not Just a Rock Band Positioned at our usual table at the local pub in Melbourne, Australia one night in 1972, the boys and I laughed as a school boy, guitarist Angus Young, set up equipment and tuned a guitar. We assumed he was one of the roadies, and were gobsmacked when AC/DC unexpectedly fired up. This month, I will discuss AC coupling (or is it DC blocking?) of high-speed serial links as my taste in music has matured over the years. |
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 SHOW & TELL: Bringing STEM Students to IPC APEX EXPO for a View of the Industry On the last morning of IPC APEX EXPO 2018, we met with Nancy Jaster, IPC design programs manager and one of the driving forces behind IPC’s STEM Outreach program for high school students. We spoke about the students who were arriving on site at IPC APEX EXPO, and what the industry, and IPC, hoped to achieve with this valuable program. |
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 It's Only Common Sense: Great Vendors Ask Questions Board shops are continually criticized for asking too many questions, often losing orders because they asked too many questions. But fabricators often have no other choice, because they receive incorrect or incomplete design data. Back when OEMs had their own in-house board shops, designers all knew how a board was built. But many PCB designers have no idea how a board is built, because they have never set foot in a board shop. If your fabricator calls with a question or three, take the call, and maybe take a tour of the facility too. |
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 Mr. Laminate Tells All: IPC-4101 Validation Services—The QPL Lives Again When the electronics industry transitioned from the military standard MIL-S-13949 to the industry standard IPC-4101 in 1997, the electronics supply chain lost something fundamental: the Qualified Products List (QPL) for all the laminate and prepreg materials. |
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