Name: Ken Shirriff on the Hidden Complexity of Power Supplies by O'Reilly Radar in O'Reilly Hardware Podcast
Duration: 41 min 5 s
Description: In this episode of the Hardware Podcast, we talk with Ken Shirriff, a software engineer at Google and writer of a fascinating series of electronics teardowns. His posts on power supplies, like Apple’s MacBook and iPad chargers, offer detailed looks at how the real things differ from counterfeits. And his writeup of Apple’s remarkably complex Magsafe connector is illuminating.

The O'Reilly Hardware Podcast is hosted by Jon Bruner and David Cranor, and focuses on the people, ideas, and technology that we feature at the O'Reilly Solid Conference (solidcon.com). We explore topics related to the Internet of Things, hardware, software, manufacturing, and the blurring of the physical and virtual worlds.

O'Reilly Hardware Podcast

Audio example to accompany the May 2021 Sound On Sound magazine article.

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She rose every day at dusk and rehearsed, performed, ate and drank until dawn.  Then slept all day, woke up and began to create and unravel again as the sun went down.  Nearly every song Edith Piaf sang came from a moment of her life on the streets of Paris.  She would tell her composer and musician lovers a story, or describe a feeling or show them a gesture and they would put music and words to her pain and passion, giving her back her own musical autobiography.  Charles Aznavour, Francis Lai, Georges Moustaki, Henri Contet, some of France's great musicians and writers recall their nights with Edith Piaf.   

Fugitive Waves is one of 10 podcasts in the Radiotopia Collective, some of the best story-driven podcasts on earth.  99% Invisible, The Truth, Love & Radio,Theory of Everything, Strangers, Radio Diaries, and us, The Kitchen Sisters. Come January you'll also be hearing Criminals, Mortified, The Illusionist and Heart.   Love Funding for this episode comes from Mothlight Creative and Audible.com.  Funding for Radiotopia comes from Mailchimp and The Knight Foundation and from all of you who backed the Kickstarter campaign that kicked some serious support.

12 - The Nights of Edith Piaf

This week, the guys get in the conversation on a variety of topics including the expiration date on feuds, specifically within the rap game, Damien talks about an incident with a mouse at his hotel which sparks a discussion about fear, and the idea of comics becoming caricatures of themselves over time. Check it out.

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Have Mercy

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In this episode of the Hardware Podcast, we talk with Ken Shirriff, a software engineer at Google and writer of a fascinating series of electronics teardowns. His posts on power supplies, like Apple’s MacBook and iPad chargers, offer detailed looks at how the real things differ from counterfeits. And his writeup of Apple’s remarkably complex Magsafe connector is illuminating.

Ken Shirriff on the Hidden Complexity of Power Supplies

In this episode of the O’Reilly Hardware Podcast, Jeff Bleiel and I speak with Gilad Rosner, a privacy and information policy researcher, and the founder of the Internet of Things Privacy Forum.  Rosner is also the author of the recently-published free O’Reilly ebook, “Privacy and the Internet of Things.”

Gilad Rosner on Privacy in the Age of The Internet of Things

With interest growing in field programmable gate arrays (FPGAs)—witness Amazon’s recent addition of AWS EC2 instances that include dedicated FPGAs—this episode of the O’Reilly Hardware Podcast looks at what FPGAs are and how their capabilities are different from microcontroller boards (such as Arduino and Raspberry Pi).Jeff Bleiel and I speak with Ryan Cousins, co-founder and CEO of KRTKL (pronounced “critical”), the makers of Snickerdoodle, a board that’s based on an ARM/FPGA hybrid chip.

Ryan Cousins on Field Programmable Gate Arrays

In this episode of the O’Reilly Hardware Podcast, Jeff Bleiel and I speak with Niko Triulzi, co-founder and CTO of AE Dreams, the makers of the children’s product Turtle Mail, a wooden mailbox with a WiFi-connected thermal printer inside. Triulzi explains the hardware and software workings of the device, which enables parents, relatives, and friends to send a message from a computer or mobile device. The child then receives the message, which is printed from the mailbox.

Niko Triulzi on IoT Toys

In this episode of the O’Reilly Hardware Podcast, Jeff Bleiel and I speak with Joel Johnson, co-founder and CEO of BoXZY, a startup that makes an all-in-one desktop CNC mill, 3D printer, and laser engraver. We discuss the BoXZY device’s software and hardware, including its CAD/CAM software (Autodesk’s Fusion 360) and controller board (Arduino Mega), as well as its shield, steppers, and firmware.

Joel Johnson on Desktop Fabrication

In this episode of the O’Reilly Hardware Podcast, Brian Jepson and I speak with Mike Vladimer, co-founder of the Orange IoT Studio at Orange Silicon Valley. Vladimer discusses how Internet of Things devices could benefit from connectivity options other than those provided by well-known technologies (including cellular, WiFi, and Bluetooth), and explains the LoRa wireless protocol, which supports long-range and lower-power applications.

Mike Vladimer on IoT Connectivity

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O'Reilly Media spreads the knowledge of innovators. At O’Reilly, a big part of our business is paying attention to what’s new and interesting in the world of technology. We have a pretty good record at having anticipated some of the big technology developments in recent history. For instance, we launched the first commercial Web site, GNN, in 1993; we organized the meeting at which the term “open source” was first adopted; we were early investors in Blogger, which helped launch the blogging revolution; and more recently, our Web 2.0 conference launched a world-wide meme. We call this predictive sense the “O’Reilly Radar.” And while we’re certainly not always right, we are, at least, good at making interesting guesses.

Our methodology is simple: we draw from the wisdom of the alpha geeks in our midst, paying attention to what’s interesting to them, amplifying these weak signals, and seeing where they fit into the innovation ecology. Add to that the original research conducted by our Research team, and you start to get a good picture of what the technology world is thinking about.

Ken Shirriff on the Hidden Complexity of Power Supplies

O'Reilly Radar

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