SAVE THE FILE UNDER: 3.2 POWER SUPPLIES
NAME:
Essential Question: What can I do to ensure my understanding of the
lesson and have success in the class by passing the exam with an 80% or
PERIOD:
higher.
NOTE: MAKE SURE TO TYPE YOUR
Learning Goal: Students will be able to learn about power supply
NAME/PERIOD ABOVE SO YOU DO NOT
terminology and functions. They will also identify different power supply
LOSE 10 POINTS.
connectors.
Refer to the 3.2 Power Supplies FACTS to help you answer the questions. Go to the PC Pro Test-out, 3.2 Power
Supplies lesson. DO NOT GOOGLE FOR THE ANSWERS. USE THE FACTS FROM PC-PRO TEST OUT.
1. What do new power supplies
have to avoid overloading one
circuit and how does it work to
avoid overloading the circuit?
2. What is AC and DC current?
3. What function does the red
switch on a power supply
perform in a power supply and
why is it important?
4. What is watt and how does the
watt rating for a power supply
affect the devices you can use in
a system?
5. What is soft power supply?
6.
Why must you be careful when
using a proprietary power
supply?
7. When choosing a power supply
to power a computer
component what must you take
in consideration? Explain.
8. Why should you never open a
power supply and what should
you do if the power supply does
not provide power?
9. What are a few symptoms of
bad power supply?
10. Is it necessary to ground yourself
when working on a power
supply?
11. What should you insert on the
motherboard connector to turn
the power supply on for testing?
SAVE THE FILE UNDER: 3.2 POWER SUPPLIES
Identify each power supply connectors and match them with the correct description. Type the letter inside the
space provided to the left of each connector.
POWER SUPPLY CONNECTORS
POWER SUPPLY DESCRIPTON
A. 4-pin +12 volt power (P4). This connector
supplies 2 additional wires of 12 volt power.
B. 4-pin accessory power. Often called a 4 pin
Molex connector used by IDE hard drives, optical
drives and other accessory devices.
C. SATA power cable. This power cable has 15 pins
and provides 3.3, 5 and 12 volts. It is used for
powering SATA devices.
D. 4-pin mini-Molex. This connector provides both
5 and 12 volts and is used by floppy drives.
E. 8-pin eps + 12 volt. This connector provides 4
lines of 12 volt power. This connector is used with
some older dual processor systems or some newer
quad-core processors.
F. 20 – pin. The main motherboard connector and
supplies 3.3, 5, and 12 volts to the motherboard.
G. 6-pin PCI Express. Plugs in directly to the video
card to supply the additional power since newer
video cards require more power.
H. 24-pin (20 +4 pin). This motherboard connector
replaced the 20-pin connector in older
motherboards. The additional 4 pins supply extra
wire for 3.3, 5, and 12 volts.
SAVE THE FILE UNDER: 3.2 POWER SUPPLIES
Lastly, summarize The paragraph does not have to include all details, just reflect that you have a basic knowledge of
what you learned about power supplies. You might ask yourself, "How would I explain this information to someone
else?" - You can type it in the box below.