Download - CE, CB, CC AMPLIFIERS
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MINI PROJECT PRESENTATION ONCE, CB, CC AMPLIFIERS
Guide: Mr. S.Sravana Kumar
Asst. Professor
Adithya.R ………………..….11E31A0401[ECE-A IV Year]A.Sindhu Reddy………….…11E31A0402[ECE-A IV Year]Anirudh Kulkarni…………..11E31A0403[ECE-A IV Year]A.Bhanuteja………………….11E31A0404[ECE-A IV Year]B.Bharath Kumar Reddy…11E31A0405[ECE-A IV Year]
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CONTENTS
INTRODUCTION
DIODE
POWER SUPPLY
COMPONENTS OF POWER SUPPLY
TRANSISTOR
BIPOLAR TRANSISTOR
CE APMLIFIER
CB AMPLIFIER
CC AMPLIFIER
SOFTWARE DIAGRAMS
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INTRODUCTION
An amplifier is an electronic device that increases the voltage, current, or power of a signal.
There are four basic types of electronic amplifier:
• Voltage amplifier
• Current amplifier
• Transconductance amplifier
• Transresistance amplifier
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Diode
Diodes are basic unidirectional Semiconductor Devices.
It has an exponential I-V relationship.
Diodes are manufactured using Doping Technique
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Resistivity Chart
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POWER SUPPLY The main aim of this power supply is to convert the 230V AC into 5V DC.
In this process we are using a step down transformer, a bridge rectifier, a smoothing circuit and the RPS.
Functional block diagram
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Components in Power supply
1.Step-down Transformer- To step down 230V A.C to 5V A.C .
2.Rectifier- used to convert A.C to pulsating D.C.
3.Filter- Converts Pulsating DC into Pure D.C.
4.Voltage Regulator-7805-used to supply a stable voltage.
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Bridge rectifier
A bridge rectifier is an arrangement of four or more diodes in a bridge circuit configuration which provides the same output polarity for either input polarity.
It is used for converting an alternating current (AC) input into a direct current (DC) output.
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TRANSISTOR
A transistor is a semiconductor device.
It can be used as an Amplifier or as a Switch.
Transistors are the basic elements in integrated circuits (ICs).
The Major types of transistor are:
• BJT
• JFET
• MOSFET
• UJT
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Bipolar Junction Transistor
Two junction, three terminal device formed by joining together two individual signal diodes back-to-back.
The three terminals are known as
• The Emitter ( E )
• The Base ( B )
• The Collector ( C )
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Transistor has Three basic configurations:
• Common Emitter Configuration – has both Current and Voltage Gain.
• Common Base Configuration – has Voltage Gain but no Current Gain.
• Common Collector Configuration – has Current Gain but no Voltage Gain.
Bipolar Transistors have the ability to operate within three different regions:
• Active Region – the transistor operates as an amplifier and Ic = β.Ib
• Saturation – the transistor is “Fully-ON” operating as a switch
• Cut-off – the transistor is “Fully-OFF” operating as a switch
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Output Characteristics Curves of a Typical Bipolar Transistor
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Common Emitter Amplifier
a common emitter amplifier is typically used as a voltage amplifier
Input is applied to base ,output is taken across collector and the emitter is grounded.
Features:
• Moderate /high input impedance.
• Moderate output impedance.
• High Voltage Gain
• High Currant Gain.
• Output is Inverted
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Experimental Output of CE
Amplified output
Signal Input
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Common base amplifier
A common base also known as grounded-base amplifier is typically used as a voltage amplifier.
In this circuit
• The emitter terminal serves as the input
• The collector as the output
• The base is connected to ground, or "common”.
Features:
• Low input impedance.
• Moderate/High output impedance.
• High Voltage Gain
• Unity Current Gain.
• Non-inverting amplifier.
The Common base amplifier circuit
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Experimental Output of CB Amplifier
Signal Input
Amplified output
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Common collector
Common collector amplifier also known as an emitter follower typically used as a voltage buffer.
In this circuit
• The base terminal serves as the input,
• The emitter is the output
• The collector is common.
Features:
• Moderate/high input impedance.
• Low output impedance.
• Low (unity) voltage gain.
• High Current Gain.
The CC amplifier circuit
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Experimental Output of CC Amplifier.
Signal Input
Signal output
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PROTEL Circuit Design Diagram.
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SOFTWARE PROTEUS CIRCUITS
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CE Amplifier
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CB Amplifier
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CC Amplifier
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Completed Circuit Board
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Thank you