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(2Tuesday) PCAS > Week 5 Power Supply > Flashcards

Week 5 Power Supply Flashcards

1
Q

a _______ _______ supplies electric power to the components of the unit. converts _______ to _______

A

a power supply supplies electric power to the components of the unit. converts AC to DC

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2
Q

power supplies have a power input which receives energy and _______ or _______ power output connections that deliver _______

A

power supplies have a power input which receives energy and one or more power output connections that deliver current

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3
Q

power supplies _______ and delivers power to components

A

power supplies regulates and delivers power to components

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4
Q

power supplies turns _______ 110v or _______ _______ into DC voltages suitable for powering the computer’s components

A

power supplies turns incoming 110v or 220v AC into DC voltages suitable for powering the computer’s components

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5
Q

power supplies quoted as having a certain power output specified in watts, standard power supply would be able to deliver around _______ watts

A

power supplies quoted as having a certain power output specified in watts, standard power supply would be able to deliver around 350 watts

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6
Q

more _______ you have in your pc, the greater the _______ required from the power supply.

A

more components you have in your pc, the greater the power required from the power supply.

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7
Q

AC alternating current comes from the outlet

_______ _______ _______ goes to the PC

A

AC alternating current comes from the outlet

DC direct current goes to the PC

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8
Q

_______ negatively charged particles

A

electrons negatively charged particles

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9
Q

Electricity _______ 110-115v other countries use 220-230v

A

Electricity Volts 110-115v other countries use 220-230v

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10
Q

volts is _______ of electrons

A

volts is pressure of electrons

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11
Q

Amperes is the _______ of electrons _______ second flowing between _______ points like the amount of water per sec. leaving a dam thru a pipe (the higher the amount the more dangerous)

A

Amperes is the amount of electrons per second flowing between two points like the amount of water per sec. leaving a dam thru a pipe (the higher the amount the more dangerous)

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12
Q

_______ - amount of power (typical PC today uses about 500 watts)

A

Watts - amount of power (typical PC today uses about 500 watts)

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13
Q

Power is _______ times volts

A

Power is amps times volts

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14
Q

Ohms - _______ impedance similar to _______ _______

A

Ohms - resistance impedance similar to gate valve

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15
Q 
parts of a \_\_\_\_\_\_\_ \_\_\_\_\_\_\_
cover
disk drive connectors
motherboard connector
input voltage selector
power plug receptacle
power supply fan
A 
parts of a power supply
cover
disk drive connectors
motherboard connector
input voltage selector
power plug receptacle
power supply fan
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16
Q

_______ voltage selector allows you to choose which source or _______ voltage you are to use

A

input voltage selector allows you to choose which source or input voltage you are to use

17
Q

power plug _______ connect power supply to wall socket

A

power plug receptacle connect power supply to wall socket

18
Q

power supply _______ circulates air throughout power supply, acts as a cooling system to the power supply

A

power supply fan circulates air throughout power supply, acts as a cooling system to the power supply

19
Q

_______ provides structural support to the power supply and keeps dust out

A

cover provides structural support to the power supply and keeps dust out

20
Q

disk drive connectors designed to be attached to the _______ of each drive

A

disk drive connectors designed to be attached to the rear of each drive

21
Q

motherboard connector connects to motherboard, processor, memory, chipset, integrated components (such as video, LAN universal USB, and FireWire. and any card plugged into _______ bus slots

A

motherboard connector connects to motherboard, processor, memory, chipset, integrated components (such as video, LAN universal USB, and FireWire. and any card plugged into expansion bus slots

22
Q

_______ a static device that transfers electrical energy from primary winding to secondary winding without affecting frequency. reducing or increasing voltage of AC

A

transformer a static device that transfers electrical energy from primary winding to secondary winding without affecting frequency. reducing or increasing voltage of AC

23
Q

_______ it is a device used to change AC power into DC basic. basic _______ is diode. a diode is a unidirectional device that acts as _______ in forward direction. the three basic _______ circuits using diodes are the _______-wave, full-wave _______-tapped and full-wave _______ type.

A

rectifier it is a device used to change AC power into DC basic. basic rectifier is diode. a diode is a unidirectional device that acts as rectifier in forward direction. the three basic rectifier circuits using diodes are the half-wave, full-wave center-tapped and full-wave bridge type.

24
Q

_______ - of power supply is used to keep the ripple component from appearing in the output. it is designed to convert pulsating dc from rectifier circuits into a suitably smooth dc level.

A

filter - filter of power supply is used to keep the ripple component from appearing in the output. it is designed to convert pulsating dc from rectifier circuits into a suitably smooth dc level.

25
Q

_______ regulator intended to give a very steady or well regulated dc output, it is always best to have a steady output _______ so that the load will function properly the output level is maintained despite of the variation of the input _______
dc _______ is lower than ac _______

A

voltage regulator intended to give a very steady or well regulated dc output, it is always best to have a steady output voltage so thath the load will function properly the output leel is maintained despite of the variation of the input voltage
dc voltage is lower than ac voltage

26
Q

_______ voltage regulator the _______ element controls the amount of the unregulated input voltage that goes to the output as a regulated output. the regulated output voltage is sampled by a circuit that provides a feedback to the comparator circuit and is compared to a reference voltage.

A

series voltage regulator the series element controls the amount of the unregulated input voltage that goes to the output as a regulated output. the regulated output voltage is sampled by a circuit that provides a feedback to the comparator circuit and is compared to a reference voltage.

27
Q

_______ voltage regulator provides regulation by _______ current away from the load to regulate the output voltage

A

shunt voltage regulator provides regulation by shunting current away from the load to regulate the output voltage

28
Q

ic _______ regulator a regular _______ circuit unit contains the circuitry - the reference _______, comparator, amplifier, control device, and the _______ protector - inside a single IC. There are also adjustable voltage regulators which allow the user to set the desired output level. Other IC _______ have unchanging output values. It is said that IC regulators are _______ compared to _______ voltage regulators when it comes to linearity of the output _______.

A

ic voltage regulator a regular integrated circuit unit contains the circuitry - the reference source, comparator, amplifier, control device, and the overload protector - inside a single IC. There are also adjustable voltage regulators which allow the user to set the desired output level. Other IC regulators have unchanging output values. It is said that IC regulators are superior compared to transistor voltage regulators when it comes to linearity of the output voltage.

29
Q

a power supply can be _______ changed and are generally _______ _______ it is more _______ to replace

A

a power supply can be easily changed and are generally not expensive it is more economic to replace

30
Q 
black wire used to provide a ground for the current. every other color should be paired with a \_\_\_\_\_\_\_  wire
yellow wires this colors denotes +12volt
red wires this color denotes +5volt
blue wires -12volt
white wires -5volt
orange wires 3.3volt
\_\_\_\_\_\_\_ wires control wire to check dc voltage
purple wires +5v on standby mode
A 
black wire used to provide a ground for the current. every other color should be paired with a black wire
yellow wires this colors denotes +12volt
red wires this color denotes +5volt
blue wires -12volt
white wires -5volt
orange wires 3.3volt
green wires control wire to check dc voltage
purple wires +5v on standby mode

(2Tuesday) PCAS (7 decks)

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