How to make USB Speaker for PC

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Hi, friends welcome to my blog. This is my 5th text in the blog. OK in this tutorial we will learn how to make USB Speaker for your PC.
OK, Lets start,

To make this we need an Operational Amplifier or simply called op-amp.
In this project we are using LM386 low power audio amplifier which is suitable for any PC.

OK, take a look of the circuit

Circuit is so simple to understand:
Pin 1 and 8 is the gain pin. Gain starts from 20-200 which means 20 is small sound peak but 200 means highest sound peak if we don't use capacitor between pin 1 and 8 then output of sound will be low but if we want to increase sound volume then we have to connect 10uf capacitor with 50v to achieve gain of 200.

We are using C1 which is 100uf 50v. We are using this capacitor to block DC source from the output because DC is not suitable for good sound.

And finally we are using potentiometer to control the volume.

For video click the following link:-
https://www.youtube.com/watch?v=d-RzdJQKpUE&feature=youtu.be

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