When the voltage from the wall is many times higher than normal. Like if lightning were to hit the power line outside your computer would not see 120 volts, it would be more like 2000-5000+ volts.
A sudden burst of power in a computer
I dont think it protects the system, it just keeps your computer for blowing up when there is a power surge. What the surge protector does is it takes "the hit" from the surge and that fries instead of the computer.
If the computer operates in an environment prone to fluctuating current/voltage, a surge protector will reduce or eliminate (most of) the variations and protect the sensitive electronics in the equipment. Failure to protect from voltage spikes could result in damage to hardware and/or loss of data.
Which component is designed to remove high-voltage spikes and surges from a power line so that they do not damage a computer system?
A surge protector
1: It can cause the computer to not have power, at all, so that when you press power, absolutely nothing happens. 2: If it's surge protecting feature is down, it could let a surge through and damage components.
A power spike - also known as a power surge - could harm a computer if the computer's power supply has a low joule (unit of energy) rating. A power spike, a sudden increase in energy, can overwhelm a computer's power supply and cause too much electricity to flow to sensitive chips and processors and destroy them. To safeguard against power spikes a surge protector should be bought. A computer power supply with a high joule resistance rating would work as well.
If a surge protector had a very high resistance at all voltages, the wires in the surge protector would short out. It would kick off the protector and make it useless. A new surge protector would need to be purchased.
You need to plug in big electrical items, such as a computer, you need to plug it into a surge protector, available at your local electronics store, i.e., Best Buy.
You need a good power surge strip or a UPS. Make sure the computer plugs into the surge strip or the UPS, and then plug the strip or UPS into the wall. Some good UPS devices actually do power conditioning which is better, but more expensive.
Within the computer there can be a minor surge which can minorly damage almost anything inside.
Yes, a lightning storm can potentially damage a computer if a lightning strike directly hits the computer or if a power surge travels through the electrical wiring and damages components. It is recommended to use surge protectors and unplug electronic devices during storms to reduce the risk of damage.