Dillan Hyatt
Unit
Volts
Amp or Ampere
Definition
A measure of
Electrical “pressure”
differential
A measure of
electrical current
Ohm
A measure of
resistance to
electricity
Watt
A measure of
electrical power
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Computer Example
An AT power supply
provides 4 separate
voltage
A 17 inch monitor
requires less than 2
A to operate
Current can flow in
typical computer
cables and wires
with a resistance of
near 0hm
A computer power
supply is rated at
200 to 600 W
Volts are a measure of “pressure”
120 volts.
Black and yellow
A transformer is a device that changes the ratio of
current to voltage while a rectifier is a device that
converts alternating current into direct current. Both are
found in a computer.
+12, -12, +5, -5, and +3.3
Provides an additional 12 volts of power
24 pins
An ATX motherboard designed just to fit it.
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A ground line is used to prevent electrocution and to
prevent the wires from getting to hot.
A transistor.
The big electrical charge help inside the capacitors
 |--Use a inexpensive AM radio on a low frequency near the
device
A short circuit
LPX or mini LPX
ATX (most common), BTX, LPX, NLX
Adding and removing components better, better support
for I/O devises and processor technology, and lowering
cost.
* PC appears dead
*PC sometimes halts during booting
*Error code or beeps occur during booting
*You do not hear the fan running
The hard drive and the monitor
Hibernation
APM ( Advanced Power Management)
Look for “EnergyStar” in the manual or in bootscreen.
Joules
It shows that the surge protector is still working.
Standby UPS, On-Line UPS, and Line Interactive UPS
A Smart UPS can let the computer know when certain
power related changes are occurring.
27) Size of the motherboard and the connectors on the back
of it.
28) ATX, NLX, BTX.
29) Get rid of the dust on the inside.
30) BTX