Chapter 7 Continues

Question 1

PI power connector

Answer 1

20-24pins and is on average motherboards

Question 2

Typically pc power supply has at least 3 types of connectors that plug into peripherals. What are they?

Answer 2

molex

Mini

SATA

Question 3

Molex connectors

Answer 3

Supplies 5V and 12V current for fans and older drives. It has notches called chamfers, that guide its installation. Always check for proper orientation before you plug this in. It’s easy to break.

Question 4

Mini connectors

Answer 4

Only a few power supplies still support the mini connector or Berg connector. Supplies 5V and 12V to peripherals. You’ll occasionally see devices that still need this connector. These were around when floppy disks were popular.

Question 5

SATA power connector

Answer 5

Serial ATA (SATA) drives need a 15 pin SATA power connector. The larger pin count supports the SATA hot swappable feature and 3.3-, 5-, and 12V devices.

Question 6

Splitters and adaptors

Answer 6

Splitters - create more connectors

Adaptors - help you connect certain connectors if needed

Question 7

ATX

Answer 7

The original ATX power supplies had two physical features: the motherboard power connection and soft power

Question 8

Motherboard power:

Answer 8

Came with a single cable with a 20 pin P1 motherboard power connector. Also had at least two other cables, each populated with two more molex or mini connectors for peripheral power — 5V running to motherboard

Question 9

Soft power

Answer 9

Handles the chore of turning the PC on or off

Question 10

Soft power

Answer 10

The power switch on your PC isn’t a true power switch. The power switch on an ATX system simply tells the computer whether it has been pressed. The Bios or OS takes over from there and handles the chore of turning the PC on or off. This is called soft power.

Question 11

P4 connector

Answer 11

First update to the ATX standard

4 pin motherboard power connector

Question 12

Aux connector

Answer 12

ATX 12V 1.3 introduced 6 pin auxiliary connector

Question 13

EPS12V

Answer 13

24 pin - more currents and more stability for the motherboards

Came with AUX connector, ATX12V P4 connector, and unique 8 pin connector

EPS 12V and ATX12V not interchangeable

Question 14

Rails

Answer 14

PCs power comes from a single transformer that takes the AC current from a wall socket and converts it into DC current that is split into 3 primary DC voltage rails: 12V, 5V, 3.3V

Groups of wires run from each of these voltage rails to the various connectors

Each rail has a max amount of power

Multiple 12V rails in a power supply that. Reds to run a powerful PC

Question 15

The key circuitry of her monitors the amount of amperage going through each rail called the ________ , will shutdown the power supply if the current goes out beyond its cap

Answer 15

Over current protection (OCP)

Question 16

Single rail system

Answer 16

Single OCP circuit monitors all the pathway

Question 17

Multi rail system

Answer 17

Each pathway gets its own OCP circuit

Question 18

Auxiliary PCI express (PCIe)

Answer 18

6 pin - high end video cards have 1 to 2 sockets that require specific PCIe 6/8 pin power connectors

Question 19

Niche market power supply form factors

Answer 19

Mini ITX and microATX

TFX12V

SFX12V

Question 20

Mini ITX and microATX

Answer 20

Smaller power supply form factors designed specifically for mini ITX and mircoATX cases, respectively

Question 21

TFX12V

Answer 21

A small power supply form factor optimized from low profile ATX systems

Question 22

SFX12V

Answer 22

A small power supply form factor optimized for systems using FlexATX motherboards

Question 23

Harmonics

Answer 23

Create the humming sound you hear from electrical components

Question 24

Active power factor correction (active PFC)

Answer 24

Extra circuitry that smooths out power coming from the wall before passing it to the main power supply circuits

Question 25

Wattage requirements

Answer 25

Total wattage of all devices combined is the minimum you need the power supply to provide

Question 26

Wattage rating

Answer 26

Represents the amount of energy thats converted from the power outlet to your computers internal power components

Question 27

Power supplies are headed for their efficiency under a voluntary standards program called 80 plus

Answer 27

Bronee 80 percent, Gold 90percent or titanium 94 percent

Question 28

Redundant power supply (RPS)

Answer 28

You will never have to worry about power failure when you have this. RPS - two identical RPS power supplies are used in a server