This is simple portable audio amplifier circuit. This circuit built based on IC TEA2025 which is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package manufactured by UTC. Circuit has Internal Thermal Protector. It is designed for portable cassette players, mp3 players and radios. You can also use it as your smartphone or PC audio amplifier. This circuit require 9V power supply to work, you may use a power supply circuit with output 9V @500mA DC current or a 9V lead acid battery.

Here is the portable audio amplifier schematic diagram for stereo audio input/output:


and here for mono audio input/output (bridge)

Portable Audio Amplifier Specification

Stereo per channel
VCC=9V; RL=4 ohm/3W
VCC=9V; RL=8 ohm/2W

Bridge Application
VCC=9V; RL=8 ohm/5W
VCC=9V; RL=4 ohm/8W

Supply Voltage min = DC3v @ 500mA
Supply Voltage max = DC12v @ 500mA
Supply Voltage recommended = DC9v @500mA

Download TEA2025 datasheet document for your project reference:

circuit schematic

View Comments

1 2 3
Share
Published by
circuit schematic

Recent Posts

Switched ON Bike Lamp

Do you have a bicycle..? why don't try to build this circuit..?. Powered using battery…

55 years ago

3A Switching Power Supply Regulator

This is the circuit diagram of 3A switching power supply regulator: Simple and cheap, the…

55 years ago

Remote Control Tester

Here is the remote control tester circuit. This circuit is really a simple and easy…

55 years ago

Current Output Multiplier for 78xx Regulator

This is the circuit diagram of current output multiplier designed for regulator IC LM78xx. By…

55 years ago

4 Transistor FM Tracking Transmitter

The following diagram is the FM tracking transmitter based on 4 transistors. No additional notes…

55 years ago

White Line Follower

This is the circuit diagram of white line follower toy. The actuator of the toy…

55 years ago