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Do you often hear the ringing of switching power supplies and devices when you are in a quiet space? (lemmy.world)

submitted 10 months ago* (last edited 10 months ago) by j4k3@lemmy.world to c/asklemmy@lemmy.ml

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I'm curious, how many people are aware of these sounds. I have designed, etched, and built my own switching power supplies along with winding my own transformers. I am aware of the source of the noise. So, does anyone else hear these high frequency sounds regularly?

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[–] Illuminostro@lemmy.world 17 points 10 months ago (2 children)

I play electric guitar a foot from my computer. I hear all kind of noises through my amplifier. Scolling with my wired mouse makes a noise through it. I also know my phone is goimg to ring before it does because the cell,signal makes a noise through mu computer speakers.

[–] IronicDeadPan@lemmy.world 5 points 10 months ago (1 children)

Cell phone incoming signals: dit dit dit...dit dit dit...dit dit dit...buzzzzzzzzzz..dit dit dit...buzzzzzz...ringtone.

[–] Illuminostro@lemmy.world 1 points 10 months ago

Exactly.

[–] folkrav@lemmy.ca 2 points 10 months ago* (last edited 10 months ago) (1 children)

Curious. I thought that buzzing from cellphones was TDMA induced, which isn’t really a thing since… LTE, I think? I’m wondering why you still get this. Older phone, older network/infra…?

[–] Illuminostro@lemmy.world 1 points 10 months ago (1 children)

You're correct that it's not the high pitch sound from the old days. Now it's more like a,low pitch hum. But it's still there.

[–] folkrav@lemmy.ca 1 points 10 months ago

Interesting! I haven’t had this happen with any speaker or amp in a good decade. I wonder what it is!