TEA2025B ic audio amplifier.

TEA2025B ic audio amplifier made with 4 volt battery

This things are required to make it............

1.👉 TEA2025B ic..............https://amzn.to/2VdWcx6

2.👉 2 pcs 470uf capacitor................https://amzn.to/2BMNyfM

3.👉 6 pcs 100uf capacitor.................https://amzn.to/2GLIBtA

4.👉 2 pcs 223pf capacitor................https://amzn.to/2QZodtS

5.👉 Bluetooth module................https://amzn.to/2BMZrmb

6.👉 1pcs spst switch.................https://amzn.to/2BMpZDW

7.👉 1pcs dc socket..................https://amzn.to/2GLJbHM

8.👉 1pcs speaker clip connector...............https://amzn.to/2Vcwcly

Watch This Video For Better Understanding

*TEA2025B ic pinout........

1 no pin...........Bridge

2 no pin...........Out.2

3 no pin...........Boot.2

4 no pin...........Gnd

5 no pin...........Gnd

6 no pin...........Feedback

7 no pin...........Audio input

8 no pin...........Svr

9 no pin...........Gnd

10 no pin...........Audio input

11 no pin...........Feedback

12 no pin...........Gnd 

13 no pin...........Gnd 

14 no pin...........Boot.1 

15 no pin...........Out.1

16 no pin...........3-15 volt dc input.

circuit diagram of TEA2025B ic

* This ic is stereo ic.

* This ic is 10 watt ic. Per channel output 5 watt.

*Now watch the circuit diagram and follow my steps to make amplifier.

*First you need a plastic case for assemble this amplifier.

*Then cut the plastic case size of the bluetooth module. And input the bluetooth module after cut the plastic case.

*Then attached the TEA2025B ic with the heat sink, after applying heat sink paste between heat sink and TEA2025B ic. And make a hole on the plastic case. then input the TEA2025B ic on plastic case.

*Then connect 470uf capacitor [+] pin with ic's 2 no and 15 no pin. And capacitor [-] pin is speaker output.

*Then short ic's 3 no and 14 no pin by 100uf capacitor. [connect after watch circuit diagram]

*Then short all gnd pin of ic. Short ic's 4, 5, 9, 12, 13 no pin by a wire.

*Then connect 100uf capacitor [+] pin with ic's 6, 8 and 11 no pin. and capacitor [-] pin connect with gnd.

*Then connect 223pf capacitor with ic's 7 and 10 no pin. And here is audio input.

*Then connect the gnd wire with 1000uf (power) capacitor [-] pin. and connect it 4 volt battery's [-] pin.

*Then you need a dc socket for charge the 4 volt battery. Connect IN4007 diode with the dc socket as well as the picture.

*Then you need a spst switch. Make a hole on plastic case and input the switch.

*Then connect wire on ic's 16 no pin and connect it with spst switch's first pin and second pin is connect with 1000uf (power) capacitor [+] pin. And then capacitor [+] pin wire connect with 4 volt battery's [+] pin.

*Then connect wire on dc socket. IN4007 diode's [-] pin is connect with 4 volt battery's [+], and dc socket's gnd pin is connect with 4 volt battery's [-] pin. 

*Now your circuit is ready. play songs on this circuit.

Thank you,

Technical Mriganka...........