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Buzzing from various plugs/sockets around the house

rory0k · 2014-03-05 09:37:57

This morning I became aware of a little clicking noise coming from my inductive phone charger. I realised I'd been hearing it for a while. While I was changing, I noticed a high-pitch noise coming from my wife's sony charger. Then later in the kitchen, a buzzing noise coming from the socket the microwave was connected to.…

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05-03-2014 10:37am

#1

rory0k

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Join Date: July 2008

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This morning I became aware of a little clicking noise coming from my inductive phone charger. I realised I'd been hearing it for a while. While I was changing, I noticed a high-pitch noise coming from my wife's sony charger. Then later in the kitchen, a buzzing noise coming from the socket the microwave was connected to. All around the house, various sockets buzz.

Is this normal? I've checked my voltage using a meter plug, and it fluctuates between about 236.5 and 237.5, which is normal enough according to the ESB (who's operating range is 207 - 253 Volts)

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#2 05-03-2014 11:12pm
[Deleted User]
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Some chargers click. Simple 3 stage chargers use relays to activate different circuits depending on battery requirements.
Some transformers buzz it's induced magnetic noise generally the cheaper the noisier.
Microwave? No idea.

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