Lecture 3 Flashcards

1
Q

Its output is high if all inputs are high. For other input, the output is low.

A

AND

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2
Q

Its output is high if one or more inputs are high.

A

OR

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3
Q

The process of converting an ac signal into a dc signal

A

Rectification

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4
Q

It is used in power supplies to convert ac voltages to dc voltages.

A

Rectifiers

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5
Q

Types of rectification

A

Half-wave rectification & Full-wave rectification

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6
Q

It changes ac voltages based on the turns ratio between the primary and secondary.

A

Transformer

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6
Q

It eliminates the fluctuations in the rectified voltage and produces a relatively smooth dc voltage.

A

Filter

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7
Q

A circuit that maintains a constant dc voltage for variations in the input line voltage or in the load.

A

Regulator

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8
Q

Simplest rectifier circuit

A

Half wave rectifier

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9
Q

It is the voltage rating that must not be exceeded in the reverse-bias region or the diode will enter the Zener avalanche
region.

A

Peak inverse voltage (PIV) [or PRV
(peak reverse voltage)]

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10
Q

It produces an output voltage during one-half (180 degrees) of the input ac signal.

A

Half wave rectifier

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11
Q

Produces an output voltage during the entire cycle (360 degrees) of the input ac signal which means it uses both cycle of the input signal for its output.

A

Full wave rectifier

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12
Q

It has the ability to “clip” off a portion of the input signal without
distorting the remaining part of the alternating waveform.

A

Clippers

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13
Q

There are two general categories of clippers

A

series and parallel

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14
Q

It is defined as one where the diode is in series with the load

A

Series clippers

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15
Q

It has the diode in a branch parallel to the load.

A

Parallel clipper

16
Q

It is a network constructed of a diode, a resistor, and a capacitor that shifts a waveform to a different dc level without changing the appearance of the applied signal.

17
Q

In clampers, as the capacitor
voltage increases the charging current ____

18
Q

It is employed to maintain a relatively low transformer peak voltage while stepping up the peak output voltage to two, three, four, or more times the peak rectified voltage.

A

Voltage-multiplier circuits

19
Q

Voltage multiplier circuits are typically made up of ___

A

diodes and capacitors

20
Q

Operates on reversed biased condition, maintain its voltage when the breakdown is reached

A

Zener Diodes

21
Q

Used in high frequency range
due to its quick response time and lower noise figure

A

Schottky Diode (Hot carrier diode)

22
Q

Light sensitive diode that narrows the depletion region when there is a presence of light

A

Photo diode

23
Q

Give off visible light when it is
properly biased

A

Light Emitting Diode (LED)

24
It is a diode that always operates in reverse bias and is doped to maximize the inherent capacitance of the depletion region.
Varactor
25
A large exposed surface area on one layer of the semiconductive material permits the photons to be emitted as visible light.
Electroluminescence
26
The term laser stands for
light amplification by stimulated emission of radiation
26
A device that operates in reverse bias where I(lambda) is the reverse light current
Photodiode
26
also known as a photovoltaic cell, is a type of semiconductor device that converts light into electrical energy.
Solar cell
27
High-current diodes used primarily in high-frequency and fast-switching applications. They are also known as hot-carrier diodes.
Schottky diodes
28
It consists of heavily doped p and n regions separated by an intrinsic (i) region.
PIN diode