Introduction: DIY | 20 Watt Powerful Amplifier Using TDA2005 - Easy to Make

About: For more content please subscribe to my YouTube channel @

20 Watt Powerful Amplifier Using TDA2005 - this is one of the easy amplifier anyone can build

Step 1: Making Video

You can watch the making of the video by the clicking the video linked in this step or continue reading to make your own 20 watt amplifier

You Can Subscribe To My YouTube Channel By Clicking HERE

Step 2: Components Required

1. TDA2005 - Buying Link

2 Heat Sink - Buying Link - USA or Buying Link - IND

3. 1000uF/25 volt

4. 220uF /25 volt - 2

5. 2.2uF /25 volt

6. 10uF /16volt or 10uF /25 volt

7. 0.1uF Ceramic capacitor - 4

8. 10 ohm resistor - 2

9. 1 ohm resistor - 2

10. 1.5k ohm resistor

11. 1k resistor

12. 3.5 mm Male Jack with cable

13. 3.5 mm Female jack

14. Any Speakers for testing

15. Heat Sink Compound

16. PCB board

17. Wire

18. Battery & Battery cap

19. Soldering rod, soldering wire & soldering paste

20. Wire stripper

Step 3: Circuit Diagram

1st Image - Circuit Diagram

2nd Image - In this image i have shown how to add a volume control. The volume control part is not included in the circuit diagram and also in my construction. This part can be skipped. Only add this if you want a volume control in your amplifier.

Step 4: Construction :

Mount all the components on PCB board and make connection according to the circuit diagram .

Few Tips :

1st Image - Connect the TDA2005 and before connecting the other components make sure to leave some place for the heat sink. My suggestion - Place the heat sink & mark the area.

Make sure you connect all the nodes properly

8th, 9th & 10th Image - I suggest to add heat sink compound on the heat sink and then attach the heat sink to the TDA2005 with a screw. Heat sink compound helps to transfer the heat from the TDA2005 to the heat sink at fast rate. This also have a additional help of transferring the heat from the plastic part of the TDA2005 to the heat sink

Note : I recommend, adding a small 5 volt computer cooling fan if your running the amplifier for the long time on the go.

12th Image - I have change few components while construction my PCB board which is explained in this image. You need not change the components. The reason for me to change this is i was short of components in my stock.

Step 5: Finished Images

3rd Images - this image gives you brief technical aspects of the amplifier.

Note : For better results i recommend you to supplying 12 volt as input voltage

To watch the amplifier performance please CLICK HERE

Testing begins @ 3:20th minute of the video


If you interested in making this product you can please use my affiliate buying links to buy the components

Do you want to support my videos?
If Yes, Please browse and buy things from my Amazon Store. This way I get a small commission which will help me produce more videos. Please use the link to visit my store :

You can also contribute to me on Patreon using the link :

Amazon USA:

TDA2005 -

Heat Sink -

Heat Sink Compound -

Soldering Kit :

Wires -

PCB Board -

Insulation Tape -

Wire Stripper & Cutter -

Resistors, Capacitors & Others Things :

3.5 mm Jack -

Amazon India:

Heat Sink -

Heat Sink Compound -

Capacitors, Resistors & Other items -

Soldering Kit -

Wires -

PCB Board -

Scissor -

3.5 mm Jack -

Wire Stripper & Cutter -


Please Subscribe To My YouTube Channel by CLICKING HERE