helps protect
against damage
from surges and
spikes
a surge
suppressor
diverts extra
electrical voltage
that is on the line
to the ground
uninterruptible
power supply
(UPS)
helps protect against potential
electrical power problems by
supplying a consistent level of
electrical power to a computer or
other device
the UPS provides a
consistent quality of
power when brownouts
and blackouts occur
standby
power supply
(SPS)
helps protect against potential
electrical power problems by
providing a backup battery to
supply power when the incoming
voltage drops below the normal
level
this device is not
as reliable as a
UPS because of
the time it takes to
switch over to the
battery