Power & Energy

Polls Mains hum

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Author Author: neuromodulator
Date Created: 18 Jan 2020 6:32 PM Date Created
Last Updated Last Updated: 11 Oct 2021 2:59 PM
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Comments 12 comments

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Mains hum

Probably many community members are quite familiar to the mains hum. What effect does it have on you?

Top Comments

genebren over 4 years ago +4

Very scary! I have worked on power inverter systems (up 1MW), which produces both a mains hum as well as much higher frequency switching noises. That is, until it doesn't. That is when the loud noises…
neuromodulator over 4 years ago in reply to genebren +4

I've never had any of such experiences, nor do I often get close to large AC devices, but the hum still makes me anxious. The noise in some way reminds you that you are not safe and you could die at any…
beacon_dave over 4 years ago +3

Working with AV, it is a nuisance...

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wolfgangfriedrich over 4 years ago

At home I know it is the capacitor for the well pump startup. So I am getting anxious about when it is going to fail.
anywhere else I am just curious what piece of equipment it is that makes the distinctive sound.

Humming switch mode power supplies are much scarier to me.
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wolfgangfriedrich over 4 years ago

At home I know it is the capacitor for the well pump startup. So I am getting anxious about when it is going to fail.
anywhere else I am just curious what piece of equipment it is that makes the distinctive sound.

Humming switch mode power supplies are much scarier to me.
- W.
- Cancel
- Vote Up +2 Vote Down
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