WELCOME TO OUR PRESENTATION

DC Power Supply.

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PRESENTED BY

Name ID:

1. Rejvi Ahmed 13307132

2. Md. Mostafizur Rahman 13307027

3. Jobaeear Molla 12103097

4. M.A.A.A. Al- Arif Bin Roise 12103055

5. Md. Robiul Islam 13105156

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SEQUENCE/CONTENTS

Introduction

How it works

Equipments

Circuit diagram

Conclusion

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Introduction:

The electrical power is almost exclusively generated,transmitted and distributed in the form of acbecause of economical consideration but foroperation of most of the electronic devices andcircuits, dc supply is required. Dry cells and batteriescan be used for this purpose. No doubt, they havethe advantages of being portable and ripple free buttheir voltages are low, they need frequentreplacement and are expensive in comparison toconventional dc power supplies.

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How it Works (Continued): Voltage Step down

Process (AC to DC):The voltage woulddown by thetransformer. Theworking principle oftransformer is verysimple. It dependsupon Farada’s law ,mutual inductionbetween two ormore winding isresponsible fortransformationaction in an electrictransformer.

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Rectification Process:Rectification processwill be accomplishedby using a diode. Adiode is an electricalcomponent thatconducts current inone direction andblocks current fromflowing in the otherdirection.

How it Works (Continued):

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How it Works (Continued):

Filtering Process:

For filtering our outputcurrent we may use acapacitor. A capacitor iscommonly used forfiltering and storecharge in it.

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How it Works (Continued): Load (LED):As a load we used LEDlight for our project.

LED

Resistor

Resistor: Resistor is anelectrical component thatreduce the electriccurrent.

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Equipments:

Name: Quantity (Piece)

Project Board 1

Transformer 1

Diode 4

Resistor 1

Capacitor 1

Load (LED Lamp) 1

Connecting Wire As needed

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Equipments at a Glance:

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Circuit Diagram This i s the c ircui t d iagram on which the project would work .

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After Completing Project

When AC Power AbsentWhen AC Power Present

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CONCLUSION:The power supply that has been designed provides agood alternative to a more expensivepower supply. The power supply has fewcomponents, covers a small area, and is very simplein design.

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