Introduction: DIY Super Simple Audio Amplifier
Hey! everyone My name is Steve.
Today I'm going to show you How to Make 30 Watt Portable Amplifier in a Very Simple Way
Let's Start
Step 1: Features
Output Power
- 35 Watt x 1 @ 4Ohms
Input Power
- 16 - 24V DC
Built-in Protection
- Over Load Protection
- Short Circuit Protection
- Over Heat Protection
Step 2: Thing I've Used
LCSC
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- TDA2050 - http://bit.ly/2VfWTJ5
- 22K - http://bit.ly/2VfWTJ5
- 680R - http://bit.ly/2VfWTJ5
- 2.2R - http://bit.ly/2VfWTJ5
- 0.47uF - http://bit.ly/2VfWTJ5
- 100uF 25V - http://bit.ly/2VfWTJ5
- 22uF 25V - http://bit.ly/2VfWTJ5
- 2.2 50V - http://bit.ly/2VfWTJ5
- 1000uF 25V - http://bit.ly/2VfWTJ5
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Banggood
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- 24V SMPS - https://bit.ly/2DXQ5Yq
- Soldering Iron - https://bit.ly/2DXQ5Yq
- Flexible Arms - https://bit.ly/2DXQ5Yq
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Amazon
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- 24V SMPS - https://amzn.to/2BvUejG
- Soldering Iron - https://amzn.to/2BvUejG
- Flexible Arms - https://amzn.to/2BvUejG
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Aliexpress
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- 24V SMPS - http://bit.ly/2Vva3P9
- Soldering Iron - http://bit.ly/2Vva3P9
- Flexible Arms - http://bit.ly/2Vva3P9
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Step 3: Sponsor
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Step 4: Circuit Diagram
You can see the circuit diagram to make it easier
Step 5: Soldering
You can see the image it looks messy, you can easily use perf board but in this video, I'm doing this in an easy way
- First I've connected 22K Resistance to 2 and 4 Pin of TDA2050
- I've connected a 22uf capacitor to the 2nd pin of TDA2050
- 680 Ohms Resistances to the 3rd pin of TDA2050 and the negative pin of the 22uf capacitor
- 3 22K Resistances to pin 1,3 and 5 Pin of TDA2050 and connected all the Resistance together " see the image "
- Negative Pin of 100uf Capacitor to the 3rd pin of TDA2050 and the positive pin to the 3 Resistances
- 2.2 Ohms Resistance to the 4th pin of TDA2050
- 0.47uf capacitor to the 3rd pin of TDA2050 and 2.2 Ohms Resistance " see the image "
- Negative Pin of the 2.2uf capacitor to the 1st pin of TDA2050
- Positive pin of the 1000uf capacitor to the 4th pin of TDA2050
Step 6: Connection
Red and Black wire to 3rd and 5th Pin of TDA2050
- Green wire to Negative of the 1000uf capacitor
- Signal wire to Positive of the 2.2uf capacitor
Input Power
- The black wire is ground and Red wire is Positive
Speaker Output
- Green wire is Speaker Output with Ground
Source Input
- Signal wire is for signal input with Ground
Step 7: Heat Dissipation
- I used a medium size Heat Shink for Heat Dissipation with a little bit of thermal compound
Step 8: Setup and Enjoy
- I've used a 24V SMPS to power the Amplifier
- And used a bookshelf speaker
Thank you for visiting my Instructables Stay tuned for next Projects
