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Peter BigelowAsk only for what you need for practical decision-making.

Not a day goes by that I am not asked, or demanded, to provide volumes of data on what appear to be trivial things. Between DFARS flow-downs, NIST protocols, Dodd/Frank requirements and AS/ISO documentation, the verification and validation needs have reached hyper levels. But as time spent providing these data grows exponentially, I keep returning to two simple questions: Does the requester really know what they need? And is the information provided truly accurate?

We are a product of our experiences. My career commenced in the mid-1970s. Then, I was the “young pup,” the gofer and protegee to more seasoned coworkers. That was the era when businesses were just starting to adopt computers as management tools. The hot new area in every large corporation was the “Management Information Systems” department. They had the sexy new mainframe computers that took up the entire basement, typed code on snazzy keypads, and were able to generate reams of reports containing tons of data.

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Mike BuetowDoes artificial intelligence make you concerned for your job? Are humans at imminent risk of being replaced by robots, or even software-driven functions?

Kyle Miller says no and no.

Miller is head of a team of product developers at Zuken in Bristol, England, that is working on AI-based place-and-route technology. In addition to the 20-plus years spent in CAD tools, he has a doctorate in artificial intelligence, which means he’s a lot better at math than me or you.

Speaking at Zuken Innovation World in mid-April, Miller outlined the headway Zuken is making in machine-learning tools. The short answer: quite a bit. Machine learning-based programs are very good at pattern recognition and converting data into usable forms. Everyday uses include Google’s Android-based speech-to-text tools. ML is also apparently superior in finding and exploiting bugs in software, to the extent the developers of the space-flight simulation role-playing game known as Elite Dangerous had to eliminate the function after their game’s ML exploited a glitch to create an unstoppable weapon.

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 Our Jan. 27 newsletter spoke about a decline from Taiwanese PWB manufacturers: “The barometer for the Taiwanese electronics industry is falling – signaling bad weather ahead.”

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Mike BuetowIf your designer certification were suddenly rendered invalid, would you feel any less professional? Would you feel any less knowledgeable about your craft?

Those questions are at the root of an ongoing debate between IPC and the Designer’s Council Executive Board. The two parties have been at odds over the past several months due to a difference in opinion over the nature of the certification program.

Designer certification as a formality dates back to 1994. A group of industry professionals, along with the late Dieter Bergman, then IPC technical director, devised the original template. (Disclosure: I was the IPC staff liaison for design and was present at all the meetings where the program was drafted.) A consulting firm we’d hired advised us to use a consensus body of knowledge such as a standard as the foundation for the exam, as it would leave us less exposed to litigation from someone who might have failed the test. Thus, we wrote hundreds of questions for a test based on IPC-D-275, the prevailing design standard of the time, but steeped in good design practice. And we developed a multi-day workshop to prepare designers for it.

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Are parts falling incorrectly from the feeder?

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Akber RoySurface roughness can increase electric field strength and capacitance.

Conductor surface roughness directly interferes with conduction in high-frequency circuits. How is this? Surface conductivity (or RF resistivity) of a metal film is a function of frequency, as conduction decreases exponentially from the surface into the film. But it’s a Catch-22; the “roughness rule” states the rougher the interface between metal and substrate, the better the adhesion, but the higher the attenuation. 

Scientists have long studied the effect of grooves present on the surface of a conductor, having noted the additional losses through the conductors caused by them. In worst-case scenarios, the grooves cause losses that sometimes reach a factor of two. The explanation proposed was electromagnetic (EM) waves travel mostly along the surface of a conductor; e.g., the copper signal trace. The grooves effectively cause the signal paths to become longer, as the EM waves, while traveling along the surface, enter in and then exit from the grooved shapes.

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