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Early_To_Risa@sh.itjust.works

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Anon reflects on e-sports (sh.itjust.works)

submitted 5 months ago by Early_To_Risa@sh.itjust.works to c/greentext@sh.itjust.works

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[–] errer@lemmy.world 6 points 5 months ago* (last edited 5 months ago) (1 children)

Not sure you follow: even if the primary frequency is out of range, a harmonic (half the frequency, quarter the frequency, etc) can simultaneously exist with the primary.

[–] RightHandOfIkaros@lemmy.world -4 points 5 months ago (1 children)

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.