Kosketuslataus

Kosketuslataus, also known as inductive charging or wireless charging, is a method of transferring electrical energy between two objects through electromagnetic induction. This process does not require physical electrical conductors to be connected. Typically, it involves a charging pad or base and a receiver that is integrated into the device being charged.

The charging pad contains a coil of wire that generates a fluctuating magnetic field when connected to a power source. When a compatible device containing a similar coil is placed within this magnetic field, the field induces an alternating electric current in the receiver's coil. This induced current is then converted into direct current (DC) by the device's internal circuitry, which in turn charges the device's battery.

Kosketuslataus offers convenience by eliminating the need to plug and unplug cables. It is commonly found in smartphones, smartwatches, electric toothbrushes, and increasingly in electric vehicles. While it offers a cable-free experience, the charging speed can sometimes be slower compared to traditional wired charging. Efficiency can also be affected by the distance and alignment between the charging pad and the device. Standards like Qi have been developed to ensure interoperability between different manufacturers' devices and chargers. The technology continues to evolve, with advancements aimed at increasing charging speed, efficiency, and range.