How to Make Bicycle Horn Circuit Using BC547 Transistor

Hii friend,

Today I am going to make a circuit of Bicycle Horn circuit using BC547 Transistor.This circuit will give output bicycle horn when we will connect 9V battery to this circuit.

Let's get started,

Step 1: Take All Components As Shown Below

Components required -

(2.) RGB LED (Changing colour RGB LED) - 3V x1

(2.) Buzzer - 5V x1

(3.) Battery clipper x1

(4.) Battery - 9V x1

(5.) Resistor - 330 ohm

(6.) Resistor - 220 ohm

Step 2: Transistor BC547

This picture shows the Pin outs of Transistor BC547.

As pin-1 is collector,

pin-2 is base and

pin-3 is emmiter of this transistor.

Step 3: Connect 330 Ohm Resistor

Solder 330 ohm resistor to base pin and emmiter pin of transistor as shown in the picture.

Step 4: Solder RGB LED

Next solder RGB LED -

Solder +ve pin of RGB LED to collector and -ve pin of RGB LED to base pin of the transistor as you can see in the picture.

Step 5: Connect 220 Ohm Resistor

Solder 220 ohm resistor to +ve and -ve pin of the buzzer as shown in the picture.

Step 6: Connect Buzzer to Circuit

Next we have to connect buzzer to the circuit.

connect -ve pin of buzzer to collector pin the transistor as shown in the picture.

Step 7: Connect Battery Clipper Wire

Next Connect battery clipper wire.

Solder +ve wire of battery clipper to +ve pin of Buzzer and

Solder -ve wire of battery clipper to emmiter pin of transistor as you can see in the picture.

Step 8: How It Works

Now our circuit is ready so let's check it.

Connect battery to battery clipper and now we can observe that Bicycle horn sound is coming from the buzzer.

This type we can make bicycle horn circuit using only BC547 Transistor.If you have any question about this project then you can ask on comment box.

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Thank you