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Inspired by over-the-cubical-wall conversations about the changing world of electronics and electrical engineering, Daniel Bogdanoff and Mike Hoffman set out to create an electrical engineering podcast. Covering a broad range of topics from the basics of electrical engineering to the tough engineering problems of tomorrow’s technologies, Daniel & Mike bring in members of Keysight’s engineering team to provide their unique perspectives.

EEs Talk Tech - An Electrical Engineering Podcast EEs Talk Tech - An Electrical Engineering Podcast

    • Technologie

Inspired by over-the-cubical-wall conversations about the changing world of electronics and electrical engineering, Daniel Bogdanoff and Mike Hoffman set out to create an electrical engineering podcast. Covering a broad range of topics from the basics of electrical engineering to the tough engineering problems of tomorrow’s technologies, Daniel & Mike bring in members of Keysight’s engineering team to provide their unique perspectives.

    Life Lessons from electroBOOM! – DON'T PLAY WITH HIGH VOLTAGE! (Mehdi Sadaghdar Interview) – #41

    Life Lessons from electroBOOM! – DON'T PLAY WITH HIGH VOLTAGE! (Mehdi Sadaghdar Interview) – #41

    That time Mehdi almost died on camera, science & tech on YouTube, 50 takes of the same scene, and more life advice from Mehdi Sadaghdar, aka electroBOOM! Join Mehdi and Daniel Bogdanoff in an random park in downtown New York City in this electrical engineering podcast episode.



    Mehdi is awesome check him out at: https://www.youtube.com/electroboom



    Episode sponsored by the 5G track, everything you need to know about 5G everything: https://www.keysight.com/find/LEARN5G



    Video:









    Audio:







    Approximate time tags:



    1:00He gives away tools to people that actually need it



    1:30electroBOOM is bringing electronics and electrical engineering to the mainstream



    Science channels are really growing on YouTube



    2:55How much does Mehdi prepare for his videos?



    3:30Most of Mehdi’s mistakes and explosions are planned and scripted



    4:30The comment section is always interesting



    5:10Mehdi has a Master’s Degree in Electrical Engineering



    6:00He doesn’t have a very good pain tolerance



    6:40He has a hard time keeping a straight face when something’s coming in the video



    7:00Jacob’s Ladder project – he almost died and learned that he should not be a mechanical engineer“I would be dead if it wasn’t for my flimsy wiring…”



    8:40Before he became a full time YouTuber he worked doing electronics for a boating steering and control company



    9:50Mehdi got his undergrad degree in Iran, Master’s in Canada



    10:00How Mehdi got into electronics – one of his relatives got him an electronics kit as a kid and he loved it



    10:40electroBOOM is not as good of a channel name as his daughter’s channel, electroCUTE



    11:40Mehdi works really hard on his videos



    Most underrated joke: “I don’t have a very long term memory”



    12:25Mehdi’s wife didn’t used to like his videos, she thought they were boring. But, she’s since come around



    13:30He watches PewDiePie and lots of science channels



    14:40Mehdi and “Mr. Tripod” do all his production work



    16:20The content is what matters, it’s not about the production value



    17:10Every paragraph that he reads, he tries it 10 – 50 times so that it comes out straight. Usually it’s just the last take that he keeps



    17:40Is it “recording” or “taping”? Can you still say “taping?”



    18:10Batteries can explode in beautiful ways



    18:45what other good science channels do you recommend?Cody’s Lab, Smarter Every Day, Veratisium, The Sci Show



    19:20Follow Mehditation on YouTube as well: https://www.youtube.com/mehditation



    19:35If you really want to learn electronics, you must experiment. Just pickup some random project, start building, and you will learn.And if you don’t care about electronics, do something else. I don’t know…



    …but don’t play with high voltage!

    • 21 min.
    Little Big Power: Femtoamps and Regenerative Supplies – #40

    Little Big Power: Femtoamps and Regenerative Supplies – #40

    When power systems get ridiculous…



    Power goes way beyond basic bench power supplies. Daniel Bogdanoff sits down with Chris Cain to explore femtoamp measurements, 100 kV multi-quadrant regenerative power systems, noise, and space-borne solar arrays in this EEs Talk Tech electrical engineering podcast!









    Audio:







    Learn more about the Keysight RP7900 regenerative power systems (RPS) and the Keysight CX3300 Dynamic Current Analyzers



    0:17Recording from New Jersey with Chris Cain, who manages teams for electronic industrial products, like power, DMMs, function generators, DAQs, board test, etc.



    1:15Current analyzer behind us measures FEMTOAMPERES of current. This is useful for RF and IoT systems.



    4:20Chris’s most spectacular equipment failure – a new engineer put their electrolytics in backwards



    6:30For extra large electrolytic capacitors people design vent holes in PCB 8:15 High power power supplies. 5kW and 10 kW power supplies



    9:00Two quadrant power supplies vs. one quadrant power supplies



    10:30A 100 kV power supply!? What’s that used for? Battery emulation for things like electric cars. The supply has to be able to both source and sink power, and switch between the two very quickly



    12:15A regenerative power supply (RPS) rectifies input voltage and puts it back on the AC mains instead of dissipating it as heat like a normal electronic load. So, the overall cooling requirements are very different for an RPS than a normal electronic load. One of the big costs for industrial factories is air conditioning and heat management. So, a regenerative power supply is very useful because it reduces heat.



    15:15Regenerative power supplies are also useful for testing photovoltaic inverters, for both terrestrial and space solar systems.



    18:45Noise parameters for high power systems



    20:30Power is very complex, and the systems are very dynamic



    22:15Giant toroidal transformers are used for power supplies and are dynamically controlled. They also are leveraged from systems like source measure units (SMUs).



    24:30Precision current measurement is very different than measurement, it often uses a triax



    25:30Some systems have 5 or 6 wire measurements to help with guardbanding

    • 28 min.
    5G, Beamforming, & MIMO – #39

    5G, Beamforming, & MIMO – #39

    5G means business. With wired speeds coming in over the air, designers are turning to new wireless techniques like beamforming, MIMO, and advanced tower synchonization designed to pump you full of bits. Find out more as Daniel Bogdanoff sits down with Brig Asay and Joe Haver to discuss the changing wireless ecosystem of tomorrow.



    Audio:







    Video:


     




    1:004G was sub 6 GHz, but 5G is much higher frequencies (24 GHz, 28 GHz, 39 GHz, and above 50 GHz)



    2:154G test strategies: simple source and a middle-of-the-line signal analyzer. There were also some combo boxes that were both signal sources and signal analyzers.



    4:005G testing requires more powerful setups. There are still generators, but they have to be more powerful. FR2, 100 MHz, 200 MHz, 400 MHz wide bands make things more complicated.



    Chambers and OTA (over the air) testing and MIMO systems make things much more complicated.



    And, a 5G system has to cover all of these ranges.



    5:30MIMO for 5G – MIMO means “Multiple Input Multiple Output”



    Beamforming is also being implemented. Designers need to be able to test and see all the 5G signals at once.



    7:00 Beamforming explanation and discussion – essentially beams can be directed with constructive and destructive interference to send signals to UEs (user equipment).



    5G beamforming significantly increases the power delivered to a UE. Want to try it? Try “Build a beam” here: https://www.keysight.com/main/editorial.jspx?cc=US&lc=eng&ckey=2800374



    10:005G brings wired-level speeds to wireless systems, which will open up brand new markets that haven’t even been defined yet.



    11:155G security



    12:00Are 5G bandwidths a challenge? A wider carrier channel means more interference and a lower effective number of bits / SNR (signal to noise ratio). So, the wide 5G bands require a more robust design. This is especially true for distance.



    Even windows are potentially a challenge with 5G frequencies, so beamforming becomes critical.



    15:30Testing 5G with a signal analyzer / spectrum analyzer – is it doable? Sorta… How do you look at four distinct bands at one time?



    18:00The UXR oscilloscope can actually look at multiple bands at once at 0.5 EVM (error vector magnitude).



    20:00Why does 5G have so many different frequencies and bands? Isn’t that excessive?



    21:00Will 5G make it where I can get rid of my home internet provider?



    22:00Beamforming from a cell tower is pretty easy, but it’s much harder for a handset. So, there are systems that propose 5G downlinks, but 4G or 3G back up to the tower.



    23:00Multiple towers can talk to the same handset AT THE SAME TIME! Multiple towers can provide the same packet at the same time to the same UE to increase the power. This means they are all working on the same clock as well.



    25:00There are a number of ways to synchronize multiple cell towers at the same time. GPS is common, but there are a number of other feasible technologies.



    27:00Brig has to get in his “vicious Keysight plug” for the mmWave extension on the UXR that lets an oscilloscope behave like a signal analyzer. It also uses a 1mm connector on the front end.



    31:45Stupid question: if you had to describe 5G using five words that start with “G” what would they be?

    • 34 min.
    USB4 – No more Mr. Nice Guy, your USB-C connector has to do it all! – #38

    USB4 – No more Mr. Nice Guy, your USB-C connector has to do it all! – #38

    New tunneling modes, the scoop on plugfests, and 40 Gbps!



    Get the FREE! Tech Tip eBook about testing 6 emerging technolgy standards: http://bit.ly/PodcastTechTrends



    Subscribe on YouTube ► http://bit.ly/KeysPodcastSub ◄



    It feels like USB 3.2 just came out, but USB4 is HERE! With USB4, gone are the days of wondering what’s behind that USB Type-C connector – all the functionality is mandatory. And, you get double the speed! 40 Gbps over two 20 Gpbs lines keeps Moore’s law happy (which makes us happy).



    Find out more in today’s podcast with Jit Lim, Mike Hoffman, and Daniel Bogdanoff.



    Video version:









    Twitter: @DanielBogdanoff: https://twitter.com/DanielBogdanoff



    Subscribe with your podcast tool:



    iTunes:https://podcasts.apple.com/us/podcast/ees-talk-tech-an-electrical-engineering-podcast/id1238385165



    Spotify:https://open.spotify.com/show/4j9CG7Z1iy9zkjnOSVHB6f



    Google:https://podcasts.google.com/?feed=aHR0cHM6Ly9lZXN0YWxrdGVjaC5jb20vZmVlZC9wb2RjYXN0&hl=en



    Stitcher:https://www.stitcher.com/podcast/keysight-technologies/ees-talk-tech



    RSS:https://eestalktech.com/feed/podcast/ees-talk-tech



    Notes & Topics:



    1:45 The USB-IF released the USB4 Spec in September USB4 requires that you use the USB Type C connector USB4 is fully backwards compatible USB4 uses a 20 Gbps x2 link (pronounced “by two”) so Moore’s law still holds (yay!) USB 3.2 took 10 Gbps and doubled it to 20 Gbps



    It’s USB4 not USB 4.0 and not USB 4 (confirmed)



    10:00With USB4 you must implement USB-PD (USB Power Delivery), but in the past it was optional.USB4 brings a doubling bitrates, you must use Type C connector, and must be backwards compatible all the way to USB2



    13:30USB 3 and USB 3.2 had a lot of alternate modes, but USB4 implements a tunneling mode. With tunneling allows you to send packets of USB, DisplayPort, or PCIe inside of the USB protocol. This means you don’t have to run it as an alternate mode, which requires extra silicon.



    17:00The silicon is often prototyped before a spec is actually released, so that the spec can match reality and be possible to build.



    18:30USB4 is already being prototyped and tested. At the USB workshop-plugfestUSB plugfests are very secret, and company names aren’t used. They use a “test ID number” instead of company name, and the attendance is very limited. In many cases, only Keysight and the company testing their device are allowed to be in the room while the testing is done.



    21:00A “Compliance Test Spec” describes how you test a device against a specification. Because, you can’t test for every single thing in the spec, but you can test a subset of things to verify performance.



    22:00
    Will USB take over everything? It depends on the other organizations and specifications groups. There are other ecosystems and organizations like VESA (DisplayPort) and HDMI that are autonomous. But, both HDMI and VESA have a USB Type-C mode that allows the protocols to work over a USB Type C connector



    26:00USB4 implementation is very complex! The different speeds that could be used are pretty complex. USB4 is advertised 40 Gbps, but it’s actually 20 Gbps x2.



    30:15It can be 5 Gbps, 10 Gbps, 20 Gbps, and run at x1 or x2, and it can also do alt modes.



    31:55Are there any main competitors to USB4? What about the lightning connector from Apple?



    35:30There’s evidence that there will be a USB4 native display, and some high end USB4 monitors already exist.



    36:30USB4 is coming, and if you want to be on the leading edge you better get started now (and why)!



    38:20 – stupid questions:When will see USB5? What’s the lamest way someone could use USB4? If USB4 is truly universal, shouldn’t it go into space?



    Helpful Links:



    Keysight Bench Facebook page:https://www.facebook.com/keysightbench



    Keysight RF Facebook page:https://www.facebook.com

    • 41 min.
    Teaser: EEs Talk Tech Season 2!

    Teaser: EEs Talk Tech Season 2!

    It ain’t over. We’re back with a hot new season, premiering November 21, 2019!
    Audio:

    https://eestalktech.com/wp-content/uploads/2019/10/EE-Talk-Tech-Electrical-Engineering-Podcast-Season-2-Trailer.mp3
    Video:

    iTunes:https://podcasts.apple.com/us/podcast/ees-talk-tech-an-electrical-engineering-podcast/id1238385165 
    Spotify:https://open.spotify.com/show/4j9CG7Z1iy9zkjnOSVHB6f
    Stitcher:https://www.stitcher.com/podcast/keysight-technologies/ees-talk-tech 
    Google Play and Google Podcasts:https://podcasts.google.com/?feed=aHR0cHM6Ly9lZXN0YWxrdGVjaC5jb20vZmVlZC9wb2RjYXN0&hl=en 

    • 1 min.
    IC Packaging – #37

    IC Packaging – #37

    The unsung heroes of the IC world – packaging engineers!
    https://eestalktech.com/wp-content/uploads/2019/03/IC-Packaging-Electrical-Engineering-Podcast.mp3

    The pictures I promised:
    The UXR Amplifier Fanout Package:

    Bert Signal Conditioning Hybrid Packaging:

    UXR Data Processor Flip Chip Packaging:

    • 33 min.

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