Power Amplifier

Project and Seminar Material For Electrical Electronics Engineering EEE

Project and Seminar Material For Electrical Electronics Engineering EEE

Chapter One


Power amplifier is an electronic device, which is used to increase sound energy. In other words, the final stage which must driven a given load e.g mechanical indicator, a loudspeaker cathode roy tade, magnetic deflection coil, a transmitting accrual of a communication network. Power amplifier is also used in regulation power supplies, chopper amplifier, motor controller etc. In general the load will by its nature, demand a certain power from the amplifier and the out stage must be capable of delivering the power (large current or voltage swing). The preceding stage to the power stage are supposed to given the input to drive the power stage so that it can produce the load requirement.

In power amplifier a large portion of active device (transistor) characteristics is used (i.e there is large alternating input voltage or current to make efficient use of the device.

The economic importance of power amplifier is know to be useful in many aspect of both social and business activities. In the social activity, it is found that during occasions like public gathering and parties people us power amplifier to increase or enlarge their speech as to be audible. While the business activity: during business promotion, it is found that marketing agents use power amplifier for their advertisement: for notifying the public about combating.

General Description

The project is a 50 volts, 150 w Audio – power amplifier. It is capable of producing a maximum watts (output) per channel. When in full operation it will generate a maximum power output of cow. The system is design to deliver optimum performance and reliability for house application.
The external features is shown in fig (ii)

  1. Is the volume control
  2. Is the tone control?
  3. Is the input sector?
  4. Is the power switch?
  5. Is the power indicator?
  6. Is the output source?
  7. Is the input source?
  8. Is the A.C cord for the A.C power input?

The Internal Features

The system is made up of four-(4) circuit brought together to work as a unit

The four circuits are:

  1. The pre- amplifier stage
  2. The control stage
  3. The power amplifier stage
  4. The power supply stage

Sequence Of Operation

  1. Plug the a-c coil to a-c source of 220 to 220v
  2. Connect the input source to the output of cassette player or radio.
  3. Connect two speakers, one to each side (ground) not any of the outputs)
  4. Turn the volume control to minimum
  5. Turn on the cassette player or radio connected
  6. Switch on the power switch of the amplifier
  7. Then raise the volume to desired level and use the tone control (Bass and treble) to control the tone.

Power Amplifier

Project Material Download

3,000 Naira

The complete material will be sent to you in just 2 steps.

Quick & Simple…

Step One Purchase

Make payment of ₦3,000: through USSD Transfer, Bank Mobile App, ATM Transfer, or POS Transfer to:

Access Bank PlcAccount No.: 0811003731
Name: Samphina Academy
Account Type: Current

Or Click Here to pay with Debit Card

Click Here to pay with Debit Card ($15)
GHANA – Make Payment of 60 GHS to MTN MoMo, 0553978005, Douglas Osabutey 


Step Two Purchase

Send the following details through Text Message or WhatsApp Messenger | +234-8143831497

  • Payment Details 
  • Email Address 
  • Power Amplifier

The complete material will be sent to your email address after receiving your payment information | T & C Apply

  Contact Our Help Desk

You may also like:

⚠️ Need a different topic? Perform a quick search

Get A Complete Business Plan For Any Business In Nigeria

Business Plan for Businesses in Nigeria

  Business Plans in Nigeria


This research material “Power Amplifier” is for research purposes and should be used as a guide in developing your research project / seminar work. For no reason should you copy word for word (verbatim) as samphina.com.ng will not be liable for any who copied the material.

The aim of providing this material is to reduce the stress of moving from one school library to another all in the name of searching for research materials. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works. According to Austin Kleon “All creative work builds on what came before”.

samphina.com.ng is only providing this material “Power Amplifier” as a reference for your research. The paper should be used as a guide or framework for your own paper. The contents of this paper should be able to help you in generating new ideas and thoughts for your own research. Use it as a guidance purpose only.

Samphina Academy

Samphina Academy is an Online Educational Resource Center that is aimed at providing students with quality information and materials to aid them in succeeding in their academic pursuit.