Electronic Devices: Data Sheet Identification for Amplifier Types

This report provides a comprehensive guide on identifying appropriate manufacturer data sheets for electronic devices, emphasizing the importance of data sheets for maximizing device utilization. It covers various amplifier types, including Class A, Class B, Class AB, Class C, Class S, Class T, and Class D amplifiers, detailing their advantages, disadvantages, and possible applications. The report includes circuit testing procedures, such as visual inspection, voltage measurements, wiring polarity checks, and harmonic analysis. It concludes with recommendations for data sheet clarity and the importance of understanding circuits before amplifier selection. The document references several academic sources to support its findings, highlighting the complexities and nuances of amplifier technology and practical applications.

How to identify Appropriate
manufacturers data sheet for
electronic devices

Introduction
Maximum utilization ofMaximum utilization of
electronic devices depends onelectronic devices depends on
the information on the datathe information on the data
sheetsheet
Presentation is on advantagesPresentation is on advantages
and disadvantages of types ofand disadvantages of types of
amplifiersamplifiers

ObjectivesObjectives
What are the types of the amplifiers manufactured by the
company?
 Advantages
Disadvantages
Possible places of applications

Class A AmplifiersClass A Amplifiers
Simple in design, low distortion and high linearity.Simple in design, low distortion and high linearity.
The zero signal on the output should be more thanThe zero signal on the output should be more than
maximum load currentmaximum load current
AdvantagesAdvantages
Low ripple voltageLow ripple voltage
No switching distortionNo switching distortion
Eliminates Non linear distortionEliminates Non linear distortion
DisadvantagesDisadvantages
Used bulk transformersUsed bulk transformers
Requires two identical transistorsRequires two identical transistors

Class A continues, DiagramClass A continues, Diagram
 Generates sine wave formGenerates sine wave form

Class B Amplifier
Used in two complementary circuitsUsed in two complementary circuits
Out put device switches on and offOut put device switches on and off
continuouslycontinuously
AdvantagesAdvantages
More output per deviceMore output per device
Elimination of even harmonicElimination of even harmonic
DisadvantagesDisadvantages
•High harmonic distortionHigh harmonic distortion
•No need for self biasNo need for self bias

Class B continues; ApplicationsClass B continues; Applications
Data
B1=7V B2=10V R1=4Ω R2=6Ω R3=6Ω
 Used in low cost designUsed in low cost design

Class AB AmplifiersClass AB Amplifiers

Class CClass C
They are simple in the design
Relatively high efficiency and low physical size
Advantages and Disadvantages
High efficiency but with very low linearity .Also reduced dynamic range

Class AB continues…Class AB continues…
A combination of Class A and B
Application
Used in Hi-fi system
Advantages
Linear behaviour
Very simple
Disadvantages
Power dissipation generates heat
Lower power efficiency

Class S Amplifiers
Converts analog input signal to digital
square wave pulses using delta-sigma
modulation
Advantages
Digital signal can achieve efficiency of
100%
Amplifiers are non-linear

Class S continues…..