Some have over-current protection circuit, when the current exceeds a certain rating, the fuse disconnects the machine to stop working to maximize the protection of machine safety.
I didn't understand why at first, but soon I learned that there is a great shortage of electricity supply in our city-my air-conditioner turned off because of a power failure midnight.
This one said that all the technology in the world would just stop working as the clock turned on midnight of 31st December, 1999, or at least that’s what all the big companies had us believe.
I was allowed to stop playing the violin and piano before high school, I had far from a 4.0 GPA and was still allowed to celebrate birthdays and Christmas.