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Buzzing/humming noise from new sockets with usb

batman1 · 2018-01-19 12:11:32

Had new kitchen sockets installed and recently noticed that the 2 which have usb sockets in them are emitting a slight buzz or static noise. You have to go right close to hear it but it's definitely there. Anything to be concerned about?

19-01-2018 12:11PM

#1

batman1

Registered Users, Registered Users 2 Posts: 613 ✭✭✭

Join Date: September 2008

Posts: 335

Had new kitchen sockets installed and recently noticed that the 2 which have usb sockets in them are emitting a slight buzz or static noise. You have to go right close to hear it but it's definitely there.

Anything to be concerned about?

0

Comments

#2 19-01-2018 02:25PM

DublinDilbert

Registered Users, Registered Users 2 Posts: 5,421 ✭✭✭

Join Date: July 2006

Posts: 5181

batman1 wrote: »

Had new kitchen sockets installed and recently noticed that the 2 which have usb sockets in them are emitting a slight buzz or static noise. You have to go right close to hear it but it's definitely there.

Anything to be concerned about?

More than likely it is the switch mode power supply in the socket cycle skipping, basically turning on / off very quickly when there is no load. Many switch mode supplies do this when there is no load.

0