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Second Sem > ECE > Flashcards

ECE Flashcards

Identify the given description

1
Q

What is electron flow?

A

Negative to positive and has five electron

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2
Q

Conventional flow

A

positive to negative and hole, moving in the same direction as the positive charge flow

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3
Q

P-type material

A

majority carriers is holes

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4
Q

N-type materials

A

majority carriers are electrons

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5
Q

types of semiconductor

A

Silicom, Gallium Arsenide (GaAs), Germanium

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6
Q

What is doping

A

introducing impurity to intrinsic

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7
Q

What is intrinsic

A

Pure materials

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8
Q

are doped with impurities to increase conductivity

A

Extrinsic

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9
Q

Atoms with valency 5; such as Arsenic (As), Phosphorous (Pi), Antimony (Sb), etc.

A

Pentavalent atoms

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10
Q

trivalent atoms

A

Atoms with valency of 3

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11
Q

P

A

anode

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12
Q

N

A

cathode

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13
Q

flow of charges decreases

A

depletion region

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14
Q

threshold voltage at which imitation of breakdown

A

breakdown voltage

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15
Q

conduction band

A

delocalize band of energy

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16
Q

least abandoned condition of the conduction band

A

bandgap or energy gap

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17
Q

always filled with electrons, formed by a series of energy

A

valence band

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18
Q

The peak inverse voltage rating of the diode

A

half-wave rectifier

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19
Q

types of full-wave rectifier

A

center tapped rectifier and bridge rectifier

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20
Q

allows unidirectional (oneway)

A

Full-wave rectifier

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21
Q

Eliminates fluctuations

A

filter

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22
Q

ripple

A

small amount of fluctuation

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23
Q

variation in capacitor voltage

A

ripple voltage

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24
Q

Ripple factor

A

can be lowered by increasing the value of the filter

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25
Q

connected to the output of a filtered rectifier

A

voltage regulator

26
Q

how much changes occurs in the output voltage for the given change

A

line regulation

27
Q

how much changes occurs in the output voltage over a certain range

A

load regulation

28
Q

are networks that employ diodes to clip away a portion of an input signal

A

clippers

29
Q

network constructed of a diode

A

clamper

30
Q

special type of semiconductor that convert light to electrical energy or vice versa

A

optoelectronics devices

31
Q

LED

A

two lead semiconductor device has polarity

32
Q

electroluminescence

A

the process by which electrons and electron holes recombine in a semiconductor, producing light

33
Q

a regulator/ device that is designed for operation in the reverse breakdown region

A

Zener diode

34
Q

applying high voltage and increasing the free electrons in semiconductors and insulating materials.

A

Avalanche breakdown

35
Q

Electrons move across the barrier from the valence band of p type

A

Zener breakdown

36
Q

Generate electromagnetic energy

A

Light Emitting diodes

37
Q

transform electromagnetic energy

A

light detecting devices

38
Q

Photoresistors

A

Light sensitive variable resistors

39
Q

Photodiode

A

2 lead semiconductor that transform light to electric energy

40
Q

A three lead semiconductor device that
acts as:
o an electrically controlled switch, or
o a current amplifier.
is analogous to a faucet.

A

Transistor

41
Q

BJT (NPN AND PNP)

A

BIPOLAR JUNCTION TRANSISTOR (NPN AND PNP)

42
Q

JFET (N-CHANNEL AND P-CHANNEL)

A

JUNCTION FIELD EFFECT TRANSISTOR (N-CHANNEL AND P-CHANNEL)

43
Q

MOSFET
Depletion type (n- and p-channel) and
enhancement type (n- and p-channel)

A

METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR

44
Q

has Voltage Gain but no Current Gain

A

Common Base Configuration

45
Q

CURRENT CONTROL DEVICE

A

BJT

45
Q

Common Collector Configuration

A

has Current Gain but no Voltage Gain

45
Q

a type of transistor that uses an electric
field to control the flow of current in a
semiconductor

A

FIELD EFFECT TRANSISTOR

46
Q

has both Current and Voltage Gain

A

Common Emitter Configuration

46
Q

commonly
known as MOSFET

A

Metal-insulator Field Effect Transistor (MISFET)

47
Q

VOLTAGE CONTROLLED DEVICE

A

FET

48
Q

(MESFET)

A

Metal-semiconductor Field Effect Transistor

49
Q

What are the two types of BJT

A

npn pnp

49
Q

IGFET

A

Insulated Gate Field Effect Transistor

50
Q

What applications does the BJT serve?

A

SWITCHING, AMPLIFICATION

51
Q

The three terminals of a bipolar junction transistor are called

A

COLLECTOR, BASE, EMITTER

52
Q

In transistors, what does 𝛽 represent

A

CURRENT GAIN OR AMPLIFICATION FACTOR

53
Q

A type of transistor that uses an electric field to control the flow of current in a semiconductor.

A

FIELD EFFECT TRANSISTOR

54
Q

Give the types of FET

A

METAL OXIDE SEMICONDUCTOR FET
METAL-SEMICONDUCTOR FET
Metal-insulator Field Effect Transistor

55
Q

The three terminals of a field effect transistor are called

A

SOURCE, GATE DRAIN

56
Q
A

Second Sem (10 decks)

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