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Odd interference between electric heater and computer

atikovi

Mar 8, 2017
7
Joined
Mar 8, 2017
Messages
7
I have a small electric space heater next to me when I use the computer in the basement. It's about 18 inches from the computer and 3 feet from the speakers. Whenever I turn the heater on or off, the computer makes the same "gong" as when I connect a device to a USB port. Reason?
 

Alec_t

Jul 7, 2015
3,642
Joined
Jul 7, 2015
Messages
3,642
Interference from switch sparking, inductive back-emf, or voltage spikes on the mains, is presumably reaching some critical USB-related part of the PC via the mains led or via the cable of a mouse or other peripheral device.
 
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