Today I am going to make an audio amplifier using transistor 8550.This is the easiest way to make audio amplifier.
Let's get started,
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Step 1: Take All Components As Shown Below
Step 2: Circuit Diagram
This picture shows the pinout of transistor 8550 and the circuit diagram of it's audio amplifier.
Step 3: Connect Resistor
Firstly we have to connect 1K resistor to the transistor.
Connect 1K resistor to emmiter and base of the transistor as shown in picture.
Step 4: Connect Capacitor
Next we have to connect capacitor.
Solder +ve pin of capacitor to base of transistor as you can see in the picture.
Step 5: Connect Aux Cable
Next connect aux cable wire.
Solder Left/Right (+ve) wire of aux cable to -ve of capacitor and
solder -ve wire of aux cable to collector pin of transistor as shown in the picture.
Step 6: Connect Speaker Wire
Solder -ve wire of speaker to collector pin of transistor.
Step 7: Connect Battery Clipper
Now we have to connect battery clipper wire to the circuit.
Solder +ve wire of battery clipper to +ve of speaker and
solder -ve wire of battery clipper to emmiter of transistor as you can see in the picture.
Step 8: HOW TO USE IT
Connect Battery to battery clipper and plug in aux cable to mobile phone and play songs.
It's volume can adjust by mobile phone.