professor,
This is where you and I are going to agree to disagree.
By spikes, I mean overcurrent as well as the occasional very high overcurrent.
The reson the UPS works is that MOST of the better ones that have a high enough wattage rating detect the over and under current and switch over to battery power the moment that is detected.
Then there are the UPS's that come with some software that you can actually regulate the overage and underage currents in which the battery would kick on , or not kick on.
What kills appliances, tv's, and other electronic devices is the constant HIGHER fluctuations. Fluctuations one is always going to have no matter who the utility happens to be. Some are worse than others.
More devices such as computer circuit boards ae more sensitive to these constant fluctuations than other things.
Just as not all UPS's are created equal, neither are quality electronic surge protectors and there are BIG differences between inexpensive ones and the ones that actually protect.
My computers I use a UPS on them with 750 Volt Amp ratings. Anything less is just playing with toys.
My higher priced appliances like refrigerator/freezer, television, I use a very good surge protector, not a power strip.
I have yet in decades to have ANYTHING fail of anything other than OLD AGE or the desire by me to change to a new technology.
Your mileage may vary.
But, as I said, this is where we are simply going to have to disagree and say that I see it differently than one another.
Hope you understand and certainly no disrespect intended.
the best to you professor!
micro....