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It A+ Vocab 1001 > Power Supplies > Flashcards

Flashcards in Power Supplies Deck (29)
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1

Special box that takes electricity from the wall socket and transforms it into electricity your computer can use

Power Supply Unit (PSU)

2

Pressure of the electrons in the wire, measured in volts (V)

Voltage

3

The amount of electrons moving past a certain point on a wire, measured in amperes (amps/A)

Current/Amperage

4

The amps and volts needed so that a particular device will function. Also called watts/W

Wattage

5

Connects the cable supplying AC power from a wall outlet into the power supply

IEC-320

6

US AC Standard

110 - 120V

7

AC Standard for the rest of the world

220 - 240V

8

Hot to Neutral AC test

115V

9

Hot to Ground test

115V

10

Neutral to Ground test

0V

11

Device used to measure a number of aspects of electrical current consisting of two probes, an analog or digital meter, and a dial set to the type of test you want to perform

Multimeter/Volt-Ohm Meter (VOM)/Digital Multimeter (DMM)

12

Unit of electrical energy

Joule

13

Device that supplies continuous clean power to a computer system the whole time the computer is on. Protects against power outages and sags (and corresponding data loss)

Uninterruptible Power Supply (UPS)

14

Ensuring and adjusting incoming AC wall power to as close to standard as possible. Most UPS devices provide this

Power Conditioning

15

PC uses this current to power motors on devices such as hard drives and optical drives

12V

16

PC uses this current for support of onboard electronics

3.3V and 5V

17

Modern motherboards use this 20- or 24-pin connector

P1 Power Connector

18

Connector that supplies 5V and 12V current for fans and older drives. Has notches/chamfers that guide its installation

Molex Connector

19

Connector that supplies 5V and 12V to peripherals. Originally adopted as the standard connector on floppy disk drives

Mini Connector

20

15-pin connector used for Serial ATA drives. Supports the SATA hot-swappable feature and 3.3V, 5V, and 12V devices. They are L-shaped

SATA Power Connector

21

Characteristic of ATX motherboards, which can use software to turn the PC on and off. The physical manifestation of it is the power switch. Instead of the thick power cord used in AT systems, an ATX power switch is little more than a pair of small wires leading to the motherboard

Soft Power

22

Provided additional 12-volt power to assist the 20/24-pin P1 motherboard power connector

P4 Power Connector

23

Any power supply that provides a P4 connector

ATX12V Power Supply

24

A 6-pin auxiliary connector that supplied increased 3.3V and 5V current to the motherboard in the ATX12V 1.3 standard

AUX Connector

25

Separate DC voltage paths within an ATX power supply

Rails

26

The key circuitry that monitors the amount of amperage going through each rail. Will shut down the power supply if the current goes beyond its cap

Over-Current Protection (OCP)

27

One OCP to monitor all of the pathways

Single-Rail System

28

Each pathway has its own OCP

Multi-Rail System

29

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

Active Power Factor Correction (Active PFC)