PC Maintenance Flashcards
Complete power failure
Blackout
An under-voltage that last seconds
Brownout
A signal caused by motors, heavy machinery, and fluorescent lights that interferes with wired networking signals.
Electromagnetic Interference (EMI)
They system installed within buildings to control temperature by supplying heat and air conditioning.
Heating, ventilation, and air conditioning (HVAC)
A device that modifies power signals to remove noise and create a smooth AC electrical signal.
Line Conditioner
Signals caused by cordless phones, microwaves ovens, and wireless devices that interfere with wireless networking.
Radio Frequency Interference (RFI)
An under-voltage that last milliseconds
Sag
An over-voltage that lasts milliseconds
Spike
An offline devices that provides power when an under-voltage occurs.
Standby Power Supply (SPS)
An over-voltage that lasts seconds
Surge
A device that protects systems form damage from a power surge by suppressing the over-voltage.
Surge Suppressor
A device that protects system form over-voltages by switching the system off.
Surge protector
A device that provides battery power to a computer in case of an under-voltage or power failure.
Uninterruptible Power Supply (UPS)
