BD139 Transistor Amplifier Make Easily

Hii friend,

Today I am going to make a Transistor Amplifier using BD139 Transistor.This transistor amplifier is working properly.It's output sound depend upon the speaker and source.

Let's get started,

Components Required -

1.Battery - 9V

2.Battery connector wire

3.Speaker

4.Transistor - BD139

5.Resistor - 1K

6.Capacitor - 16V 100uf

7.AUX Cable

All components are compulsory for this amplifier.

Connect 1K resistor to the Collector and Base of the transistor as shown in the picture.

Now Connect the +ve of 16V 100uf Capacitor to the base of the transistor as you can see in the picture.

Solder +ve of aux cable to the -ve of capacitor.

and solder the -ve of aux cable to the emmiter of the transistor.

Now solder the +ve wire of speaker to the emmiter of the transistor.

Next Solder the -ve wire of battery to the -ve wire of speaker.

and the +ve wire of Battery to the collector of the transistor.

Connect battery to the circuit.

Now our BD139 transistor amplifier is ready to play.

Connect aux cable to your phone/laptop/tab/......etc and play songs and enjoy

Hii friend,

I made everyday new projects in this blog.If you like your blog then visit everyday to make new projects.

Thank you