3. CONTENTS
COURSE OUTCOMES
INTRODUCTION
COMPONET LIST
PIN CONFIGURATION
CIRCUIT DIAGRAM
WORKING OF CIRCUIT
ADVANTAGES & DISADVANTAGES
APPLICATION
4. COURSE OUTCOMES
Build test the performance of audio amplifier
To apply the knowledge of making the audio amplifier by using
IC TBA810
We understand the concept of audio amplifier
We understand the circuit of audio amplifier for low as well as
high frequency
Analysing the audio amplifier by testing the experience
5. INTRODUCTION
It is a audio power amplifier or (power amplifier) is an electronic
amplifier that amplifier low power electronic audio signal radio
receiver or electric guitar pick up to the level that is high
enough for driving loud speaker , head phone , audio power
amplifier are found in all manner of sound systems including
sound public address & home audio system & musical
instrument amplifier like guitar amplifier it is the final electronic
stage in atypical audio playback chain before the signal is sent
to the loudspeaker.
9. WORKING & CONSTRUCTION
Audio signal input given to the non inverting pin 8 of TBA 810 IC through
volume control variable resistor VR1 and output is taken out from pin 12 and
other pins are filled up with Resistor and capacitor components.
Tabs both side in IC are grounded and IC can be covered with heat sink,
After completing the construction of circuit choose power supply depends on
required output power.
Thus this circuit gives 1 watt output for 4 to 6V and 7 watt output for 16V
bias, and it produce better output from 40Hz to 20KHz (-3dB) frequency
input.
10. ADVANTAGE & DISADVANTAGES
ADVANTAGES
Linear behaviour
Hi-FI quality sound
Simpler design
Still pretty simple & basic
DISADVANTAGES
Power dissipation (which generates
heat & required large heatsinks)
Typically more expensive than single
supply amplifier
The design tends to be much more
complex
Low power efficiency have an average
efficiency of less than 50%
11. APPLICATION
Audio amplifier uses car AUX input, cell phone amplifier ,DVD players,
earbuds , GPS audio, Headphone amplifier, hearing amplifier ,iPads
laptops, motorcycle audio,MP3 players, PC audio, Race Scanners, satellite
Ratio,tablet travel amplifier, TV listening ,wireless headphone etc.
Important applications include public address system, theatrical & concert
sound reinforcement , & domestic sound systems such as a stereo or
home-theatre system instrument amplifiers including guitar amplifier.