This is TDA7052, Tiny stereo audio amplifier for mobile or Ipad. Even a 5v audio amplifier circuit diagram. It helps you to use AA 1.5V battery x2 (3V) to run a power amplifier.
There are two circuits diagram, 1W BTL Mono and stereo amplifier.
Mono small amplifier
In the circuit below. You may not believe your eyes. There are just five parts only, so easy. Because most components are inside TDA7052 and Mono model on simplest BCL at a maximum of 1.2W output.
This is Super Small and mini Power Amplifier BCL 1.2W using TDA7052. If you are seeking the circuit amplifies small-sized. I recommend this circuit because tiny economize with the equipment is a little.
And still can use force against large-sized get comfortably ( I have tried already ). Beside it still is low voltage amplifier circuit that volts power supply very wide be about 1.5V arrive at 15V as well.
Recommended: 3 transistor audio amplifier circuit
It is tiny size and can adjust volume by VR1. Regard as IC TDA7052 be worthwhile very much.
For you who want to try build this circuit. I have model PCB give a friend tests to see too.
Circuit Diagram of 5V BCL audio Amplifier using TDA7052
PCB layout and component layout.
Photo from Amazon.com
You can read TDA7052 datasheet pinout with DC volume control.
Mini Stereo Power Amplifier
The Small stereo amplifier circuit,low power, less devices, TDA7025 is the main part.
Operation of the circuit, the signal split into left and right through the capacitor coupling of C1, C2.
A variable resistor VR1 adjusts the strength of the input signals to bridge amplifiers
IC1- IC2 serves to amplify the signal up, drive out the speakers left-right.
Resistors R1, R2 set the input impedance to the circuit box.
The capacitor C4, the current filter to smooth and C1 reduce noise, and high frequency, resulting from the power supply to ground.
It helps to stabilize the circuit.
This circuit power supply: 6-volt battery or batteries, only 4 watts of output power up to 1.5 watts at 8-ohm speakers to the sound of small TV, radio, cassette player.
It’s a light or sound. No one was banned. Only has a headphone jack or the phone becomes available.
How to build this small stereo amplifier circuit
We can build these projects with seeing the PCB layout in Figure 2 with the Universal PCB form for saving time and money.
C1,C2_10uF 25V Electrolytic Capacitors
R1,R2_5.6K 0.5W resistors
VR1, VR2_4.7K or 5K potentiometer trimmer resistors
Speaker 8ohms 5 Watts
You can buy TDA7052 at www.mouser.com
See More 5V audio amplifier circuit diagram
We have other low volt amplifier circuit using 5V or 3V supply. Sometimes you may use them.
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