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ECE > ECE 2 > Flashcards

ECE 2 Flashcards

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1
Q

A silicon pn junction device that is designed for
Operation in the reverse-breakdown region

A

Zener diodes

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2
Q

A diode that always operates in reverse bias and is doped to maximize the inherent
capacitance of the depletion region

A

Varactor diodes

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3
Q

When the device is forward-biased, electrons cross the pn junction from the n-type
material and recombine with holes in the p-type materials

A

Light-emitting diode

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4
Q

A device that operates in reverse bias where iy is the reverse light current. It has a
small transparent window that allows light to strike the pn junction

A

Photodiode

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5
Q

Also known as a photovoltaic cell, is a type of semiconductor device that converts
light into electrical energy

A

Solar cell

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6
Q

Normally emits coherent light, whereas the led emits incoherent light

A

Laser diode

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7
Q

Are high-current diodes used primarily in high-frequency and fast-switching
applications

A

Schottky diode

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8
Q

Consists of heavily doped p and n regions separated by an intrinsic region

A

Pin diode

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9
Q

Is a three-layer semiconductor device consisting
Of either two n- and one p-type layers of material or two p- and one n-type layers of
material

A

Transistor

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10
Q

Are three terminal semiconductor devices which could be used to amplify signals

A

Bipolar junction transistors

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11
Q

Derived from the fact that the base is common to both the input and output sides of
the configuration

A

Common base

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12
Q

Usually closest to or connected to the ground

A

Emitter

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13
Q

The base-emitter junction is forward-biased, whereas the collector-base junction is
reverse-biased

A

Active region

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14
Q

Base-emitter and collector-base junctions of a transistor are both reversed-biased

A

Cutoff region

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15
Q

Base-emitter and collector base junctions are forward-biased

A

Saturation region

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16
Q

Power supply that is directly or indirectly applied to the collector terminal of the
transistor

A

Collector biasing voltage (vcc)

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17
Q

Dc voltage that is used to bias the base of the transistor

A

Base biasaing voltage (vbb)

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18
Q

For common emitter, nothing more than a ground connection

A

Emitter biasing voltage (vee)

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19
Q

Means to keep the input circuit always forward biased and output circuit always
reverse biased

A

Transistor biasing

20
Q

Refers to the dc voltages applied to a transistor in order to turn it on so that it can
amplify the ac signal

A

Biasing

21
Q

The simplest transistor dc bias configuration

A

Fixed bias circuit

22
Q

The line drawn over the collector curves to determine all possible operating points

A

Loadline

23
Q

Generally a three terminal device which could be used in applications wherein
bipolar junction transistors are used

A

Field effect transistor

24
Q

Are either n-channel or p-channel depending on its construction

A

Junction field effect transistor

25
Q

Are both types of power mosfets used in power electronics

A

Vmos and umos power mosfets

26
Q

A type of semiconductor technology widely used in digital circuits, such as
microprocessors and memory chips

A

Cmos (complementary
Metal-oxide-semiconductor)

27
Q

Stands for metal semiconductor field effect transistor, which is a type of field-effect
transistor that uses a metal-semiconductor junction for the gate

A

Mosfet

28
Q

Provides amplification of a signal without any distortion so that the output signal is
an exact amplified replica of the input signal

A

Linear amplifier

29
Q

A combination of circuit elements

A

Model

30
Q

Reflects the operation of the bjt at mid-frequencies. Is an equivalent network that is
used to predict the performance of the transistor amplifier

A

Re model

31
Q

A logarithmic unit of measurement for power gain and voltage gain

A

Decibel

32
Q

A unit for measuring power levels referenced to 1 mw

A

Dbm

33
Q

A voltage amplifying device that can perform different operations. It is the most
useful device in analog circuitry. Are very high gain amplifiers with very wide
bandwidth, very high input impedance.
Single-ended input
One input is connected to the ground

A

Op-amp

34
Q

Both input pins have input signal

A

Double-ended input

35
Q

An op amp specification which indicates the voltage gain of an op amp when there is
no feedback resistor

A

Open loop voltage gain

36
Q

When there is no input voltage in an op-amp, its output is ideally zero

A

Maximum output voltage swing

37
Q

If the input of the op-amp is zero volts, ideally its output is equal to zero also

A

Input offset voltage

38
Q

Measured across the output terminal of the op-amp

A

Output impedance

39
Q

Defined as the maximum rate of change of the output voltage in a step input voltage

A

Slew rate

40
Q

The principle is the same in basic amplifiers

A

Frequency response

41
Q

Is one of the most useful concepts in electronics

A

Negative feedback

42
Q

Is the voltage gain with external feedback circuit

A

Closed-loop voltage gain

43
Q

This is a special case of the noninverting amplifier

A

Voltage follower

44
Q

A specialized op-amp circuit in which the main function is to compare two input
voltages

A

Comparator

45
Q

Has two or more inputs that provide a means of algebraically summing multiple
voltages, each multiplied by a constant-gain factor

A

Summing amplifier

46
Q

Simulates mathematical integration, which is basically a summing process that
determines the total area under the curve of a function

A

Integrator

47
Q

The differentiator circuit consists of capacitor as input element and resistor as
feedback element

A

Differentiator

ECE (2 decks)

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