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Simple Basic audio amplifier with BC547 Amplifier

In this article, we are getting to discuss an easy amplifier circuit with a BC547 transistor. Here you'll find the complete schematics and o

BeginnerFull instructions provided1 hour12,591
Simple Basic audio amplifier with BC547 Amplifier

Things used in this project

Hardware components

BC547 TRANSISTOR UTSOURCE
×1
5MM LED UTSOURCE
×1
10K RESISTOR UTSOURCE
×1
10K POTENTIOMETER UTSOURCE
×1

Hand tools and fabrication machines

SOLDERING IRON UTSOURCE
IRON STAND UTSOURCE
NOSE PLIERS UTSOURCE
FLUX UTSOURCE

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Schematics

Step 1

First, we'll need a BC547 transistor. And these are the Pinouts of the BC547 Transistor.

Step 2

Now take a hand tool then pre tin the Legs of the hand tool.

Step 3

Now you'll need a 10K resistor. Then Connect the 10k Resistor with the Transistor's Collector and therefore the base Pin.

Step 4

Now, you'll need a 100uF Capacitor. Then Connect the Capacitor's -ve Pin with Transistor's Base.

Step 5

At next i would like to run the amplifier with the Android Device. So, we'll need a 3.5MM Headphone jack For this. From the Headphone jack, we'll get three wires. Right Channel, GND, LEFT Channel wires. Since we are making a Mono Amplifier we'll need just one Channel wire. it'd be the Left Channel wire or the proper Channel wire.
In my case, i'm using the proper Channel Wire.

Step 6

Now Connect the Battery wires with the circuit. In Specifically connecting the Battery -ve with the Transistor's Emitter Pin.

Step 7

If you remember then you'll see that we've missed the Speaker +ve wire. Now let's connect the speaker +ve wire. Connect the Speaker wire with the Battery +ve.

Testing

Here I even have connected the circuit with the Android Device then give the 9V Power supply. then I played free music from youtube and you'll see that the audio is playing through the Speaker so it means the Speaker, also because the Circuit, works perfectly.
Note:
The circuit is experimental only. it's not for practical usage. If you run an extended time the circuit then the transistor will heat up quite a lot. As a result, the transistor could also be damaged.
The efficiency of those sorts of amplifies is extremely low. So, you cannot use thin in practical cases. confirm that Polarity is true otherwise the transistor is going to be instantly damaged.
You can run any 4 Ohm speakers easily.

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