Burger King

What are the three types of transistor amplifier configuration?

Common Base, Common Collector, Common Emitter

Which amplifier has an input applied to the base circuit and an output taken from the emitter circuit?

Common-Collector Amplifierop j

The collector of a PNP transistor has the most for __________ proper biasing.

Negative Potential Applied

What voltage is VE?

Emitter To Ground

(True or False) To properly bias a PNP transistor a positive potential is applied to the collector compared to the base.h by

False

What does NIC NOB represent?

Never Input on the Collector, Never Output on the Base

In a common-emitter amplifier, output is taken from the _______________ circuit.

Collector

What type of voltage is VEE?

Emitter Circuit Supply Voltage

What component has 95-98 percent of total current flowing through it?

Collector

The CE amplifier configuration has the input applied to____________.

The Base

What double subscript notation represents a Collector-to-Emitter voltage?

VCE

What does RC represent?

Collector resistor, RL, Collector Load Resistor

Which of the following represents a Collector Circuit Supply Voltage?

VCC

Voltage from the Collector to Ground is represented by_________?

VC

In a C-E transistor, what is used to represent current gain?

B Beta

What lead is identified by a wide space between it and the base lead in an oval-shaped transistor?

Collector

What lead is connected to the mounting surface in a conventional power transistor?

Collector

What are replaced with arrowheads on a schematic too indicate a connection too applicable sources?

Batteries

A tab on the case of a round transistor is located closest to the ____________ lead.

Emitter

What color is the dot that indicates the collector on a round transistor with the leads in line?

Red

(True or False) On an oval-shaped transistor, the emitter lead is the farthest from the collector.

True

On a rectangular-type conventional power transistor, the collector is connected to the _________ for the purpose of _________.

Case, Heat Dissipation

On an oval-shaped transistor, the ________ lead is the farthest from the collector.

Emitter

What is the most commonly used transistor amplifier?

Common Emitter (CE)

Common-Collector amplifiers have the highest ___________ gain of the three transistor configurations.

Current

What color sleeving indicates the Base of a round-type conventional power transistor?

Green

On a round transistor with leads in line, a red dot indicates the ________.

Collector

Which transistor amplifier provides the best power gain (Ap)?

Common Emitter

What measures the sensitivity of an amplifier's reference values when subjected to changes in temperature?

Stability Factor

Which amplifier configuration has the best overall stability?

Common Collector

To obtain a desired DC operating point and retain that operating point under actual operating conditions is _________.

Biasing

Which class of amplifier has the best efficiency?

Class C

During AB operation, the output current flows for how many degrees?

More than 180, but Less than 360

The worst stability factor is ________.

B+1

Stability is the ability of amplifier to maintain its nominal DC reference values when subjected too changes in what?

Temperature, Environment, Current, or Time

An amplifiers stability and gain are _______.

Inverse

Which class of amplifier has the best fidelity?

Class A

What minority current flows in any-reversed-biased PN junction during amplifier biasing?

ICO or ICBO

Cutoff occurs when the ___________ junction is reversed-biased.

E-B

Constant Emitter-Current biasing is also referred to as_____________.

Self Bias or Automatic Biasing

During amplifier biasing, what is defined as the ability of an amplifier to maintain its nominal DC reference values when subjected to changes in temperature, environment, current, or time?

Stability

What is the measure, of the sensitivity of an amplifiers reference values, to changes in temperature known as?

Stability Factor

What are the three factors that cause DC reference values to shift: characteristics of semiconductor materials, and variations in _______.

Supply Voltages

During amplifier biasing, ICO or ICBO is the same __________ current that flows in any reversed-biased PN junction.

Minority

Which junction in amplifier biasing has a negative temperature coefficient?

E-B

Which amplifier configuration has both AC and DC feedback?

C-C

Stability is the ability of an amplifier to maintain its nominal DC reference values when subjected to changes in temperature, environment, current, or __________.

Time

A bel is used to express the __________ ratio between the input and output of any given component, circuit, or system.

Logarithmic

A __________ is the whole number part of the log.

Characteristic

What is the log of 0.279?

-0.5543

Calculate the dvmv level for an audio signal of 60 mV.

35.56 dBmV

What is the BW, given f2 of 45kHz and f1 of 5kHz?

40kHz

Capacitive reactance is __________ when frequency is high.

Low

There are many types of amplifiers, but all are classified either by their _________ or frequency response.

Function

In impedance considerations, how many circuits are coupled when they share a common element?

Two

Gain of an amplifier our losses in transmission lines are often expressed in?

dB

A __________ is the exponent that indicates the power to which a base number is raised to produce a given number.

Logarithm

What is the antilog of -1.3201?

0.0478

What is the dB loss for a decrease in voltage from 26V to 13V?

-6 dB

As frequency decreases, capacitive reactance ____________ and inductive reactance ___________.

Decreases, Increases

A ___________ is a unit that expresses the logarithmic ratio between the input and output of any given component, circuit, or system.

Bel

What is the dB gain for an icrease in power from 17W to 52.7W?

4.914 dB

Calculate the dBm level for a 27.6 mW audio signal.

14.4 dBm

Which type of amplifier requires more components than AF and RF amplifiers?

Wideband Amplifier

Placing a capacitor across across the windings of the coupling tuned-transformer provides _________.

Better Selectivity

Direct coupling provides the _________.

Broadest frequency response of all coupling methods

Which type of amplifier is used as the final stage of amplification to drive an output device?

DC

The most costly and space consuming method of coupling amplifiers is ____________.

Transformer Coupling

What is the most widely used form of coupling?

RC

In ____________ the output device may be a speaker, antenna, or indicator device.

Power Amplifiers

In special direct-coupled amplifiers, what term describes the use of NPN and PNP transistors in the same functional amplifier?

Complementary

Feedback is the process of __________ a portion of the output signal back the input signal of an amplifier for control.

Coupling

In a closed-loop system, what represents the summation point, where two or more voltages combine?

Sigma

AF amplifiers perform uniform amplification of all signals within frequencies that fall within an AF range of _________ to _________?

20Hz to 20kHz

Power transfer __________ when the impedances of input and output stages are mismatched.

Decreases

Which amplifier coupling method acts like a single high power transistor?

Darlington Pair

What feedback system has no feedback between input and output?

Open-Loop

Ina closed loop system, __________ equals overall gain f amplifier with feedback.

Feedback Gain (Af)

Which single-ended audio amplifier configuration is used because of its good voltage, power gain, and ease of obtaining negative feedback?

Common Emitter

What is a primary characteristic of an open loop system?

No feedback output fed to the input

Which class of feedback improves the stability of an amplifier but reduces its gain?

Degenerative

A feedback signal that aids the input signal is _________.

Regenerative

What is the basic voltage gain formula for an open loop system?

Vout/Vin

What is a disadvantage to operating a push-pull amplifier in Class B?

Crossover Distortion

What type of circuit generates alternating current at a frequency determined by the values of its components and at constant peak amplitude?

Oscillator

Which oscillator component sustains oscillations?

Regenerative Feedback Network

What are the three basic parts of an oscillator?

Frequency Determining Network, Positive Feedback Network, Amplifier

In what type of oscillator does DC current flow through the resonant tank circuit?

Series Fed

Which component is referred to as the heart of the oscillator?

Frequency Determining Network

____________________ is the ability of an oscillator to maintain a constant amplitude output waveform.

Stability

What category does an Armstrong oscillator fall under?

Sinusoidal

Which oscillator is characterized by split capacitors in the frequency determining network?

Colpitts

In an oscillator, which amplifier configuration has the highest power gain?

Common Emitter

Oscillator categories are determined according to their output ___________.

Waveforms

Which components identify the circuit as a Colpitts oscillator?

C1 & C2

The ___________ amplifier configuration is best for the impedance matching.

C-C

Which type of oscillator generates complex waveforms?

Non Sinusoidal

An oscillator in which the DC current flows through the resonant tank circuit is known as what?

Series Fed