basic audio amplifier circuit diagram

The presented circuit diagram acts as an audio amplifier.  This is a basic simple audio amplifier circuit diagram.  With this circuit, very low power audio signals can be made more powerful.  


In this 2 transistor BC 547 has been used.  And with this, 2 resistors R1, R2 and two capacitors C1, C2 have been used in this circuit. 


Basic audio amplifier circuit diagram 

<img src="image_basic audio amplifier circuit diagram.jpg" alt="Basic Audio Amplifier Circuit Diagram">



How to work basic audio amplifier 

 Very low power input audio signal is applied through capacitor C1 to the base of transistor Q1.  Transistor Q1 amplifies the power of the audio signal which we get at the ammeter of the transistor.  


The audio signal received from the ammeter of transistor Q1 is applied to the base of transistor Q2 through capacitor C2.  And the transistor Q2 makes the audio signal more powerful than what we get on the transistor's collector.  


We can hear them by connecting an 8 ohm speaker to the collector of transistor Q2.  You can enjoy loud music by connecting this audio amplifier to mobile phone.  The list of electrical components used in this circuit is given below.

Electronics components 

Transistor 

Q1,Q2

BC547 

Capacitor 

C1,C2 1uf

Resistance 

R1 22k ohm

R2 22 ohm



Location: Ramala, Uttar Pradesh 250623, India

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