PC POWER Flashcards
Computer Power A+ 1001
Ready
Safety
Always disconnect from any power source, Some devices store charge in compacitors
Power Wattage
Computers USE DC Wall outlets Are AC, Power supplies convert 115 Volts AC to 3.3v DC, 5.5 OR 12v DC
AMP
The rate of electron flow past a point in one secound
Voltage
Electrical pressure being pushed through wire
WATT
Measurement of Real power use
Formula to determine watts
VOLTS * AMPS = 60W
Current
Alternating Current (AC), Constantly reverses direction through electrical lines
DC current
moves in one direction with constant voltage
Manual switch on power supply
Used to set the input to match powersupply setup for
24 pin motherboard power
Provides 3.3v , 5v , 12v
20 pin motherboard power
This can still plug into the same connection
power supply ratings
usually based on number of watts they can support size powersupply to match the type of pc its going in
sizing powersupply
add up all differnt devices in pc to determine how many watts used.