I have constructed an Audio Amplifier using TDA 2050 single supply but I am having difficulty understanding the circuit.

It contains the TDA 2050, (32W hifi audio Amplifier) with Vs = +15 V.

Can anyone please help explain the detailed functionality of this circuit, such as

1- Why do we need voltage divider (R1 and R2)? Can't we use direct Vs as +7.5 V and remove R1?

2- How do we calculate its gain ? (I got around 33, is that right?)

3- How do we calculate its cut-off frequency? (upper and lower)? (I got 3.2883 Hz?)

4- Why there are different types of capacitors?

5- Can we change non-electrolytic with electrolytic capacitors and vice versa?

7- What is the purpose of C1, C2, C3, C4, C5, C6 and C7?

8- What happens if we remove C4 ?

9- What happens if we remove C6 ?

10- Do we need to change the capacitance of capacitors if we increase/decrease Vs?

11- What is the main purpose of C5? We used that capacitor in breadboard but not in PCB.

Hi numeness!

This is not a Build You Own Amplifier forum. I suggest you register at DIYaudio.com, that's the forum you need.

Moreover many of the answers you seek can be inferred from the application pdf data sheet on the link you posted. Hope this helps.

Donuk sunny downtown York