• 0 Posts
  • 34 Comments
Joined 1 year ago
cake
Cake day: June 15th, 2023

help-circle
  • I mean, you don’t HAVE to. But you can pour some oil into the filter to pre-fill it so the oil doesn’t have to pump so long for the air you cycle out of the system, but the amount of time that happens for is so small it basically doesn’t matter. If the oil filter is easy to access and faces upward (the solid part faces the floor and open part faces up) then I would do it, but I wouldn’t do it in any other circumstance just to not have oil spilling and making a mess everywhere.

    Youre not going to blow up the engine if you don’t. But it gives some people better peace of mind.







  • Typically speaking in the aesthetic sense, _punk means taking a certain look to its extreme. Cyberpunk of course infusing everything with computer technology, steampunk infusing everything with the looks of a steam powered machine, etc.

    Starfield was described once as having its aesthetic “NASApunk,” which sounded really cool to me when I heard it. I expected white and black, gold foil, etc. Which isn’t really how the end product ended which was a bit disappointing, but the point remained that calling it “NASApunk” had me immediately expecting a certain aesthetic.

    In the case of Frostpunk, I am not sure. It takes place in a frozen world, but it doesn’t have an aesthetic to fit that name so it may just be a title.






  • I suppose its possible with a low quality CRT that has poor construction, leaving loose parts or thin plastic fins that can vibrate at harmonics of a lower frequency, but high quality CRTs don’t have this issue.

    Extra or louder noise does not occur in normal operation of a correctly functioning flyback transformer circuit. Any frequency or harmonic (vibration) that occurs that is not the specified frequency of operation of the flyback transformer is caused by a problem in the circuit. A brand new CRT with known good parts will not have any kind of extra harmonic.

    I had to replace a flyback transformer because it was too loud, and it was a pretty simple job. Hardest part was finding a new flyback transformer. After replacement, the noise volume was reduced to normal levels.



  • RightHandOfIkaros@lemmy.worldtoGreentext@sh.itjust.worksAnon reflects on e-sports
    link
    fedilink
    English
    arrow-up
    4
    arrow-down
    7
    ·
    edit-2
    16 days ago

    Yes, as I previously stated, if there is a problem with the flyback transformer circuit, it is possible that the frequency or volume of the noise it generates can become increased or different.

    Though again, PC monitors never made an audible noise unless they were low quality and used the cheaper 15.7kHz transformer in their construction.

    Other noises associated with CRTs are the degaussing noise, which only happens once usually after turning on the CRT or after pressing the degauss button, or the sound of old IDE hard disks spinning, which also make a constant high frequency noise.


  • RightHandOfIkaros@lemmy.worldtoGreentext@sh.itjust.worksAnon reflects on e-sports
    link
    fedilink
    English
    arrow-up
    23
    arrow-down
    6
    ·
    edit-2
    17 days ago

    https://en.m.wikipedia.org/wiki/Flyback_transformer

    Under “Operation and Usage”:

    In television sets, this high frequency is about 15 kilohertz (15.625 kHz for PAL, 15.734 kHz for NTSC), and vibrations from the transformer core caused by magnetostriction can often be heard as a high-pitched whine. In CRT-based computer displays, the frequency can vary over a wide range, from about 30 kHz to 150 kHz.

    If you are hearing the sound, its either a TV or a very low quality monitor. Human hearing in perfect lab conditions can only go up to about 28kHz, and anything higher is not able to be heard by the human ear.

    Either that or you’re a mutant with super ears and the US military will definitely be looking for you to experiment on.



  • This only happens with TVs or very low quality monitors. The flyback transformer vibrates at a frequency of ~15.7k Hz which is audible to the human ear. However, most PC CRT monitors have a flyback transformer that vibrates at ~32k Hz, which is beyond the human hearing range. So if you are hearing the high frequency noise some CRTs make, it is most likely not coming from a PC monitor.

    Its a sound thats a part of the experience, and your brain tunes it out pretty quickly after repeated exposure to it. If the TV is playing sound such as game audio or music it becomes almost undetectable. Unless there is a problem with the flyback transformer circuit, which causes the volume to be higher than its supposed to be.