Like, how does the spark move through wires and why?
In: Technology
A spark doesn’t move through the wires. Electricity is the flow of electrons from the positively charged terminal to the negatively charged terminal of a circuit. To charge your phone the AC power is taken through a transformer and then a rectifier to produce DC power at a lower voltage. It is then moved through the charging cord to your phone. Once in the phone it is controlled by the charging regulator circuit, which controls how much power voltage is allowed to hit the battery, and at what amperage. The battery will need a certain amperage for a time, and the voltage delivered will be allowed to rise to drive that amount of amperage. Then the battery will need a fixed voltage with an amperage that slowly tapers down to zero. This will fully charge the battery without over charging it. Li-Ion batteries are more complex than older styles of batteries, which means that the charger has to accommodate those needs.
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