2025 IC Audio Amplifier Circuit

Hii Friend,

Today I am going to make an Audio Amplifier using 2025 IC.

Let's get started,

(1.) IC - 2025 x1

(2.) Capacitor - 25V 100uf x5

(3.) Aux cable

(4.) Resistor - 1K x1

(5.) Resistor - 100K x1

(6.) Potentiometer - 47K {Variable resistor}

(7.) Battery - 9V

(8.) Battery clipper

(9.) Speaker x1

Firstly we have to connect Pins of the IC.

Solder Pin-4 and Pin-5 to each other,

And solder Pin-12 to Pin-13 of the IC.

Next Short Pin4,5 to Pin-12,13 and also solder pin-12,13 to Pin-9 as solder in the picture.

NOTE : These pins are ground for this amplifier circuit.

Solder +ve pin of 25V 100uf capacitor to Pin-3 of the IC and -ve pin of capacitor to pin-2 of the IC as solder in the picture.

Solder +ve pin of 25V 100uf 2nd capacitor to Pin-14 of the IC and -ve pin of capacitor to pin-15 of the IC as solder in the picture.

Solder +ve pin of 3rd 100uf capacitor to Pin-7 of the IC and -ve pin of capacitor to pin-5 of the IC which is Ground.

Solder +ve pin of 4th 100uf capacitor to Pin-6 of the IC and -ve pin of capacitor to pin-1 of the IC as you can see in the picture.

Solder +ve pin of 5th 25V 100uf capacitor to Pin-11 of the IC and

Solder 1K Resistor to the -ve pin of 5th 100uf capacitor and solder it with Ground pin i.e. Pin-4,5,13,14 & 9 of the IC as solder in the picture.

Solder 100K resistor to Pin-10 of the IC as solder in the picture.

Solder Left/Right wire of aux cable to pin-1 of the potentiometer and

Solder ground wire to the Pin-3 of the potentiometer as you can see in the picture.

Next solder two wires in the potentiometer for giving input audio in the IC.

Solder a wire to Middle pin of the potentiometer and Ground wire to pin-3 of the potentiometer as you can see in the picture.

Next solder Middle pin wire of potentiometer to 100K resistor and

solder pin-3 wire of potentiometer to Ground wire of the IC i.e. Pin-4 as solder in the picture.

Next solder speaker wire to the IC.

Solder a wire of speaker to Pin-2 of the IC and Other wire of speaker to Pin-15 of the IC as you can see in the picture.

Next solder +ve wire of battery clipper to pin-16 of the IC and

solder -ve wire of battery clipper to pin-4 / Ground wire.

Now our amplifier circuit is ready and so connect battery to the battery clipper and plug in aux cable to mobile phone and play songs and now we can also adjust the volume using potentiometer.

If sound is slow then please check battery and other wise remove 100K Resistor and play songs.

Thank you