■What is surge current
A surge current is a large current that flows instantaneously through an electric circuit. Surge currents are generated by the following causes:
＜Surge caused by switching＞
In a circuit that uses a coil, if the switch is turned ON and current is flowing through the coil, then the switch is turned OFF, a surge will occur.
If a surge occurs, it can cause damage to the switch. This surge is also called a flyback voltage.
A freewheeling diode is used as an example of a method for dealing with this surge.
＜Load Dump Surge＞
The alternator and battery in a car are connected in parallel, and the surge that occurs when the battery is cut off is called a load dump surge.
A clamp circuit is used as an example of a method for dealing with this surge.
＜Electro-Static Discharge (ESD)＞
This is what we call static electricity, a phenomenon in which electric charges stored in the floating capacitance of the human body or objects flow. This can also be protected against using a clamp circuit, etc.
＜Storm Surge＞
In the online battle royal game Fortnite, if there are a certain number of surviving players as the safe zone shrinks, surges are applied to players who have dealt the least damage to their opponents.
This will continue until the number of players falls below a certain number, so the target player will see hell.
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