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Answer Posted / thuranga
Online UPS is- the ups is connected to power supply and the
equipment is connected to the UPS.i.e ups does 2 works
here,they are:1) give the supply to the equipment.2) charge
the batteries in the UPS from the supply. this is online ups.
offline ups: the supply is connected to the ups and the same
supply is connected to equipment,i.e the supply charges the
ups and also the equipment. then if there is a failure in
the power supply then we disconnect the equipment from
supply and connect it to ups.this is the disadvantage of
this so we shifted to online UPS long ago.
example for the online UPS is: the ups we use for the
computers in our home
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