• 0 Posts
  • 21 Comments
Joined 1 year ago
cake
Cake day: November 4th, 2023

help-circle





  • “Coil whine”.

    The inductors used in the power regulation circuitry physically vibrate due to the electromotive force the part relies on to function. Changes in the load on the power supply changes the characteristics of the vibration, allowing audible detection of the variation.

    The physical vibration slightly alters the electrical characteristics too, which is why inductors are glued down or “potted” in some equipment to try and negate this effect.

    Edit: The inductors on your graphics card can whine too. This generates noise on the ground line of the whole PC which is then amplified by cheap sound devices, which is why you can literally hear the mouse moving on the screen on some PCs.





  • Fluke@lemm.eetoAsk Lemmy@lemmy.worldWhat's your superpower?
    link
    fedilink
    arrow-up
    12
    arrow-down
    2
    ·
    9 days ago

    Diagnosed autistic?

    It’s very common for us 'spergs to have a very high frequency cut off on our hearing, all the way to old age.

    I’m 43 and can still hear the bats chirping when they’re hunting insects in the twilight round the gardens. People think I’m making it up, until I point the bats out, tracking them by sound until they flutter high enough to see their silhouette against the sky.

    CRT TVs and monitors used to annoy the hell out of me. The high pitched whine of the flyback transformer that runs the motion of the electron beam makes a very distinctive hiss. Like someone else on here, I could tell what refresh rate your monitor was running in by the noise it made.

    That, plus an abnormally high flicker fusion frequency meant I had migraines every other day when I was working. :-/


  • See, it was plausible until the price of oil started falling. Oil is one of the few things propping up Russia’s economy. If oil keeps falling, Russia is even more screwed than it is now.

    It would appear that he’s just a brat who’s never been told no in his life, grown so far as to be going senile. It’s all ego. Every single stupid thing he does is because he thinks he’s right. He is the literal embodiment of the dunning-krueger effect, fed by a bubble of yes-men hoping for crumbs from the table.