G'day
I have a story to tell that I hope intrigues you smart people into giving me some feedback
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/xsmiley.gif.pagespeed.ic.R8GFI-pF6f.png)
I've owned a Breville toaster (See: Breville 800 2-slice) for a few years now, its been to several locations around Sydney in rentals etc, lived a hard life and still pumps out toast. (Great you say...)
The toaster is meant to be a little clever by rising the toast slowly, preview function, LED bar graph etc...
Too smart for its own good.
Problems:
After leaving the device plugged in for hours/days/weeks and while still powered on at the wall, toaster would develop from time to time a high pitched whine. If it happened at all, the pitch varied between events, not always super high pitch. Unplug it and the whine would slowly fade into the background.
My first thoughts are to the transformer as I've heard similar sounds coming from them. I could be way off.
The more interesting part for me is THIS:
The toaster is connected to a two-port wall socket, one for the toaster, the other was being used by a laptop charger.
While the toaster was being used the speakers on the laptop started buzzing to the tune of the Toaster. It was amazing to me. As the toast slowly rise, and then the arms release their hold on the toast, the sound would change to the rhythm of the toaster. And then the buzzing basically stopped once the toaster had completed its release of said toast.
Now comes the stupid part, after knowing what occurred above, the same toaster/wall socked combo was used and this time it was a phone charger and not a laptop. Start cooking toast... next minute the little wall wart is singing like crazy. I immediately pull it from the wall, and it continued to sing for about 30seconds, very high pitch.
Anyone care to give their thoughts on what's happening to the toaster and how it affected the laptop?
I wonder how it can affect the second socket?
Are other sockets at risk?
Any thoughts on safety or ideas of eliminating the issue?
I appreciate any comments.
Cheers