Low Cost Audio Amplifier Circuit

I WILL GIVE YOU 100 % WORKING AND LOW COST AUDIO AMPLIFIER WITH SIMPLE CIRCUITRY

1^ST OF ALL I WILL TELL YOU ABOUT THE COMPONENTS REQUIRED FOR THIS AUDIO AMPLIFIER

LIST OF COMPONENTS

1-  T E A 2 0 2 5 I C

2- 0.22 uF CAPACITOR ( 2 PIECES) (THIS IS CERAMIC CAPACITOR)

3- 0.15 uF CAPACITOR (2 PIECES) (THIS WILL BE ALSO CERAMIC        CAPACITOR)

4- 100 uF CAPACITOR (6 PIECES)

5- 470 uf CAPACITOR (2 PIECES)

6- 10 KILO OHM VARIABLE RESISTOR (IT IS OPTIONAL YOU MAY OR MAY NOT USE THIS)

7- TWO 4 OHM SPEAKERS FOR LOAD

CIRCUIT DIAGRAM

COMPONENTS

IN CIRCUIT DIAGRAM YOU CAN SEE THE VCC SUPPLY FOR SUPPLY YOU CAN TAKE ANY DC SUPPLY OF 3V TO 12 V UNDER 1 AMPERE FOR BETTER PERFORMANCE TAKE MINIMUM 9 VOLT SUPPLY.

AND Vin 1 AND Vin2 IS YOUR INPUT SIGNAL WHICH WILL GIVE YOU FROM YOUR AUDIO PLAYER THROUGH AUDIO JACK OR IN OTHER WAY WHICH WOULD YOU LIKE.

IF YOU USE AUDIO JACK , IT HAS 3 TERMINAL IN CASE OF STEREO JACK IN THIS YOU HAVE 3 WIRES FROM JACK ONE FOR RIGHT CHANNEL AND SECOND WIRE FOR LEFT CHANNEL AND THIRD ONE FOR GROUND THAN MAKE GROUND MAKE COMMON FOR BOTH AND CONNECT ONE WIRE OF AUDIO JACK IN Vin1 AND ANOTHER WIRE IN Vin2.

AND HERE POT RESISTOR IS OPTIONAL, IF YOU WANT TO CONTROL VOLUME THROUGH CIRCUIT, THAN YOU CAN CONNECT POT RESISTOR IN Vin1 AND Vin2.

YOUTUBE VIDEO LINK

NOW YOU SHOULD KNOW WHY WE USED HERE TEA 2025 IC

THIS IC IS ORIGINALLY DESIGNED FOR PORTABLE CASSETTE PLAYERS AND RADIOS.

BUT IT CAN BE ALSO USED TO MAKE A PRETTY DECENT STEREO AUDIO AMPLIFIER FOR AN I POD OR MP3 PLAYER.

THE INTERESTING CHARACTERISTIC OF TEA 2025 IS, IT HAS BUILT IN THERMAL PROTECTION CIRCUIT.

THIS CIRCUIT IS 100 % WORKING AND BEST FOR HOME PURPOSE AUDIO AMPLIFIER

AND FURTHER I WILL TELL YOU HOW TO MAKE COMPLETE AUDIO SYSTEM WITH THIS CIRCUIT.

THANK YOU