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,

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

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.

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

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.

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

Next we have to connect buzzer to the circuit.

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

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.

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