Electronic Devices and Circuits

Electronic Devices and Circuits


process of adding impurities is called ___________.
-Doping

The process of imparting impurities to an intrinsic semiconductive material in order to control its conduction characteristics.
-Doping

The depletion region is created by
-Diffusion


A solid material in which the atoms are arranged in a symmetrical pattern.
-Crystal

A trivalent impurity is added to silicon to create
-A p-type semiconductor

The majority carriers in an p-type semiconductor are
-Holes

Free electrons are also called __________.
-Conduction electrons


A pentavalent impurity is added to silicon to create
-An n-type semiconductor


The smallest particle of an element that possesses the unique characteristics of that element.
-Atom


Holes in an n-type semiconductor are
-Minority carriers that are thermally produced


The reverse voltage is ____________ in practical diode model.
-equal to bias voltage


What happens to the depletion region during forward bias?
-Narrows


The connection wherein the negative terminal of the source is connected to the anode side of the circuit and the positive terminal is connected to the cathode side.
-Reverse-bias connection

The p region of the diode.
-Anode

The value of barrier potential of a diode.
-0.7 V

The condition that allows current through the pn junction
-Forward Bias

The ideal diode model is represented like a/an __________.
-simple switch

The n region of the diode.
-Cathode

The limit of external reverse-bias voltage wherein the reverse current will drastically increase.
-Breakdown voltage

The bias wherein the positive side of external voltage is connected to the n region of the diode and its negative side is connected to the p region.
-Reverse Bias

The average voltage of a full-wave rectifier is _____________.

It is created from the addition of a trivalent impurity in silicon.
-A p-type semiconductor


The depletion region is created by
-all of the choices

A type of current wherein holes are moving because of the vacancy left in every move of free electrons.
-hole current

The bias wherein the negative side of external voltage is connected to the n region of the diode and its positive side is connected to the p region.
-Forward Bias

The smallest particle of an element that possesses the unique characteristics of that element.
-Atom


The process of imparting impurities to an intrinsic semiconductive material in order to control its conduction characteristics.
-Doping


The majority carriers in an p-type semiconductor are
-Holes

It means there are no impurities.
-Intrinsic

The value of the forward voltage in practical diode model.
-0.7 V

The fuse rating that must be used
-should be at least 20% larger than the calculated Ipri.

The smallest particle of an element that possesses the unique characteristics of that element.
-Atom

It determines the effectiveness of the filter.
-Ripple factor

A material that easily conducts electrical current.
-Conductor

The following are examples of trivalent atoms except ___________,
-Carbon

The addition of impurities to an intrinsic semiconductive material.
-Doping

The circuit wherein the during the negative alternation of the ac input voltage, the diode is reverse-biased and there is no current.
-Full-wave rectifier

A material that has no bandgap.
-Conductor

It states how much change occurs in the output voltage over a certain range of load current values.
-Load Regulation

The bias wherein the positive side is connected to the p region and the negative side of external voltage is connected to the n region of the diode.
-Reverse Bias

It is represented like a switch.
-Ideal diode model

The surge current initially occurs during ________.
-The first turn on of the power

The process of adding impurities is called ___________.
-Doping

It is the voltage variation in the capacitor.
-Filter voltage

It only conducts current in one direction and block the other direction.
-Diode

A solid material in which the atoms are arranged in a symmetrical pattern.
-Crystal

What happens to the depletion region during forward bias?
-Narrows

A pn junction is formed by
-The boundary of a p-type and an n-type material

Free electrons are also called __________.
-Conduction electrons

It produces an output voltage from the input voltage with a multiplication factor of two.
-Voltage Doubler

It adds a dc level to an ac voltage.
-Diode Clamper

A circuit of half-wave voltage doubler with the addition of another diode-capacitor section.
-Voltage tripler

A voltage multiplier that produces an output voltage from the input voltage with a multiplication factor of four.
-Voltage quadrupler

A type of limiter which the level to which an ac voltage can be adjusted by adding a bias voltage in series with a diode.
-Biased Limiter

Diode clamper is also known as __________.
-DC restorer

Also known as diode limiter.
-Diode Clipper

What is called to a diode clamper which inserts a negative dc level in the waveform?
-Negative clamper

Another application of diode circuit which used to clip a portion of signal voltages above or below certain levels.
-Diode Limiter

A diode clamper that inserts a positive dc level in the output waveform.
-Positive clamper

A special purpose diode which consists of heavily doped p and n regions separated by an intrinsic region.
-PIN diode

An American Physicist who first describe the properties of breakdown voltage.
-Clarence Melvin Zener

It has a small transparent window that allows light to strike the pn junction.
-Photodiode

A special purpose diode uses graded doping where the doping level of the semiconductive materials is reduced as the pn junction is approached.
-Step-recovery diode

Another name of constant-current diode.
-Current regulator diode

It is used as a dc-controlled microwave switch operated by rapid changes in bias or as a modulating device that takes advantage of the variable forward-resistance characteristic.
-PIN diode

A semiconductor operates in the reverse-breakdown region and provides stable reference voltages
-Zener diode

High-current diodes used primarily in high-frequency and fast-switching applications.
-Schottky diode

Special purpose diode that is monochromatic and also emits coherent light.
-Laser diode

It is also known as tuning diodes.
-Varactor diode

The two basic methods to turn off the SCR.
-Anode current interruption and forced commutation

Another name is SUS.
-Shockley diode

What are the terminals of SCS?
-Cathode gate, anode gate, anode and cathode

The SCS means ________________.
-Silicon controlled switch

Another name is SUS.
-Shockley diode

What does UJT means?
-Unijunction transistor

The inventor of Shockley diode.
-William Shockley

These are family of devices constructed of four semiconductor layers.
-Thyristors

It is a two-terminal four-layer semiconductor device that conducts current in either direction when activated.
-Diac

It is a two-terminal four-layer semiconductor device that conducts current in either direction when activated
-Diac

Type of MOSFET that can operate in either enhancement mode or depletion mode.
-Depletion MOSFET

It is another name for MOSFET because of the polycrystalline silicon used instead of metal for the gate materials.
-IGFET

The two types of JFET.
-N-channel and P-channel

This term refers to the depletion region formed in the channel of a FET because of the voltage imposed on the gate.
-Field-effect

The _____________ produces a depletion region along the pn junction.
-Reverse-biased

The VGS must be __________ to have channel conductivity in n-channel E-MOSFETS in enhancement mode,
-Positive

A type of FET that operates with a reverse-biased pn junction to control current in a channel.
-JFET

What is the meaning of JFET?
-Junction field-effect transistor

The meaning of MOSFET.
-Metal Oxide Semiconductor Field Effect Transistor

A type of input signal mode wherein either one signal is applied to an input with the other input grounded or two opposite-polarity signals are applied to the inputs.
-Differential mode

The JFET operates as a
-Voltage-controlled, constant-current device

It is a four-terminal thyristor that has two gate terminals that are used to trigger the device on and off.
-SCS

These are the two types of JFET.
-N-channel and P-channel

It is a two-terminal four-layer semiconductor device that conducts current in either direction when activated.
-Diac

It is the difference of the input bias currents, expressed as an absolute value.
-Input offset current

The three terminals of SCR.
-Anode, cathode and gate

A device that is like a diac with a gate terminal.
-Triac

It symbolizes the broken lines of E-MOSFETs.
-Absence of a physical channel

It is a two-terminal four-layer semiconductor device that conducts current in either direction when activated.
-Diac

It has a single pn junction and therefore, does not belong to the thyristor family.
-UJT

The three terminals of SCR.
-Anode, cathode and gate

The JFET three terminals.
-Drain, source and gate

A 4-layer pnpn device similar to Shockley diode except it has three terminals.
-SCR

To have channel conductivity in n-channel E-MOSFETS in enhancement mode, The VGS must be __________.
-Positive

The four terminals of SCS.
-Cathode gate, anode gate, anode and cathode

This term refers to the depletion region formed in the channel of a FET because of the voltage imposed on the gate.
-Field-effect

A device that is like a diac with a gate terminal.
-Triac

The total resistance between the base terminals.
-Interbase resistance

A mode wherein either one signal is applied to an input with the other input grounded or two opposite-polarity signals are applied to the inputs.
-Differential mode

The 4-layer diode.
-Shockley diode

The two main types of field effect transistor.
-JFET and MOSFET


Also known as the 4-layer diode.
-Shockley diode

The configuration that has high input impedance and low output impedance.
-Common Collector Configuration

What does SCS means?
-Silicon controlled switch

The total resistance between the base terminals.
-Interbase resistance

The resistance from the output.
-Output impedance

What JFET stands for?
-Junction field-effect transistor

The JFET operates as a _______________.
-Voltage-controlled, constant-current device

What is the meaning of JFET?
-Junction field-effect transistor

What does UJT means?
-Unijunction transistor

A single pn junction device and therefore, does not belong to the thyristor family.
-UJT

The _____________ produces a depletion region along the pn junction.
-Reverse-biased

The JFET always operates with the gate-source on junction _____________.
-Reversed-biased

The differential dc voltage required between the inputs to force the output to 0 V.
-Input offset voltage

The VGS must be __________ to have channel conductivity in n-channel E-MOSFETS in enhancement mode,
-Positive

It is a field-effect transistor that has no pn junction.
-MOSFET

A type of FET that operates with a reverse-biased pn junction to control current in a channel.
-JFET

These are family of devices constructed of four semiconductor layers.
-Thyristors

A four-terminal thyristor that has two gate terminals that are used to trigger the device on and off
-SCS

Type of MOSFET that operates only in enhancement mode.
-Depletion MOSFET (WRONG)

The value of the voltage gain of a Common Base Configuration.
-Low (WRONG)

Two basic methods to turn off the SCR
-Anode current interruption and forced commutation

A type of FET that operates with a reverse-biased pn junction to control current in a channel.
-JFET

A 4-layer pnpn device similar to Shockley diode except it has three terminals.
-SCR

The inventor of Shockley diode.
-William Shockley

It is a field-effect transistor that has no pn junction.
-MOSFET

Another name is SUS.
-Shockley diode

What are the terminals of UJT?
-Emitter, base 1 and base 2

The transistor configuration that has a 180 out of phase relationship.
-Common Emitter Configuration