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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kkazem over 2 years ago

It makes me want to get rid of it by using notch filters in my audio circuits. This can be done in either the analog or digital domain, but it's better using digital filters since there are no component tolerances nor variations over time to worry about.
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kkazem over 2 years ago

It makes me want to get rid of it by using notch filters in my audio circuits. This can be done in either the analog or digital domain, but it's better using digital filters since there are no component tolerances nor variations over time to worry about.
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