Usually mobile phone battery require very low level DC
voltage and current for charging, while our house hold wiring contains
high level AC voltage (220V) and sinusoidal current(AC). How this
becomes possible for Charger to overcome this issue?
Solution:
Charger
collects 220V from A.C Supply and then converts into required level
through transformer. After this A.C voltage converts in to D.C voltage
and this current used for mobile charging.
In mobile chargers 1st
thing was a step down transformer which steps down the voltage and
current coming from sockets and then there is a rectifier (normally a
bridge rectifier is used) that converts or rectify A.C voltages and
current coming from transformer which is Alternating current (AC) to
Direct Current (D.C) which is given to the battery of mobile fine to
charge
