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Viewing profile — IndrekR

IndrekR

HN member
Joined
Fri, Mar 27, 2015, 2:38 PM UTC
HN karma
1,885
Public activity
435 items

About IndrekR

An electronics engineer. You can contact me via indrek@hedgehog.ee

Am open for good chat on topics that matter in life and elsewhere.

Recent public activity

  1. comment
    Comment #49253814

    Has been done for decades. Buried capacitance materials like FaradFlex MC12TM exist and are really good, but are not too often used.

  2. comment
    Comment #49253759

    The (more common) package has very precise solder bumps. You can have a special order for one with ENIG finish as well, but this only makes sense if you have a really good use case…

  3. comment
    Comment #49248836

    Length of this capacitor is close to half-wavelength of 220 GHz (in vacuum). Using siblings of this broadband capacitor (40 GHz, same package) in some designs. In assembly, those r…

  4. comment
    Comment #49248612

    One scanner has way more than one channel…

  5. comment
    Comment #48943748

    0.018 kilotons. Order of magnitude smaller at minimum.

  6. comment
    Comment #48146490

    Jobs would have been lost with that move...

  7. comment
    Comment #48010000

    Was discussed recently: https://news.ycombinator.com/item?id=47834195

  8. comment
    Comment #47762153

    Have you tried Affinity Photo?

  9. comment
    Comment #47583533

    2/156 lost for Soyuz in 59 years, 2/135 for Space Shuttle in 30 years. Same rate. People often underestimate how intense STS actually was.

  10. comment
    Comment #47280995

    In QC, keeping cold is not just needed to superconduct, but to reduce thermal noise to level below the energy levels operated at.

  11. story
  12. comment
    Comment #46629219

    I am using Leo Bodnar’s fast pulse generator (SMA) in my lectures to teach transmission lines. With sufficient length (I use ~1m) it works quite well to demo with a low cost scope.…

  13. comment
    Comment #46604333

    > Except that after 11 years the equipment will have broken down or be obsolete, at which point you have to start over. If my calculations are correct, that setup probably lasts at…

  14. comment
    Comment #46564511

    A similar concept has been used for university lectures to start 15 minutes after the full hour. This was due to nobody having watches and everything being synced to the church bel…

  15. comment
    Comment #46464640

    In my EU country Gardasil 9 is the most common HPV vaccine nowadays. This protects against 9 most common strains. I would assume the same is true in other countries. We have gone f…

  16. comment
    Comment #46431216

    If the input to the weather forecast is mostly /dev/random, then yes, that is called a lie. There is a very big difference between modelling chaotic systems and providing random no…

  17. comment
    Comment #46359188

    Taiwan strait is filled with offshore wind turbines from both sides. This is not an issue for PRC nor Taiwan.

  18. story
  19. comment
    Comment #45856368

    Few things for starters: - you have to look at it in frequency domain as well; - speed of light is too slow; - often capacitors are inductors, even more so when mounted on PCB; - c…

  20. comment
    Comment #45637429

    Most common quaternary storage system is probably DNA.

  21. comment
    Comment #45585565

    Funny thing is, that news, by definition, are written about things that are newsworthy. Newsworthy things are not common, but exceptional and rare. Thus one shall not worry too muc…

  22. comment
    Comment #45455451

    In signal you can change your username any time.

  23. comment
    Comment #45241306

    The funny thing is, that MM in roman numerals means 2000.

  24. comment
    Comment #45241301

    It is to avoid confusing with "M", mīlle -- Latin for "thousand". Quite common in financial world still.

  25. comment
    Comment #44984075

    HOA = Homeowner association Took me a while to figure this out.