on video Super LED blinking with BD139 Transistor, Science project with Transistor

 Super LED blinking with BD139 Transistor, Science project with Transistor

Components used in this project:-

1. BD139

2. 10K Potentiometer

3. 56 Ohm

4. 470uf 35V Capacitor

5.LED

This is the circuit diagram of this project.

Connect all components according to this circuit diagram.

Solder +ve pin of capacitor to Base pin of transistor

and solder -ve pin of capacitor to emmiter pin of the transistor as solder in the picture.

Next we have to solder +ve leg of LED to Collector pin of transistor and

solder -ve pin of LED to -ve of 2200uf capacitor as you can see in the picture.

Next solder 1K resistor to -ve pin of 2200uf capacitor/-ve leg of LED as solder in the picture.

Our circuit is completed.

So Now we have to connect input power supply wire to the circuit.

Connect +ve clip to Emmiter pin of Transistor and

Connect -ve clip to 1K resistor as you can see in the picture.

NOTE: We have to give 12V DC Input Power supply to this circuit.

Now LED will be flashing.

 Super LED blinking with BD139 Transistor, Science project with Transistor

Components used in this project:-

1. BD139

2. 10K Potentiometer

3. 56 Ohm

4. 470uf 35V Capacitor

5.LED

This is the circuit diagram of this project.

Connect all components according to this circuit diagram.

Solder +ve pin of capacitor to Base pin of transistor

and solder -ve pin of capacitor to emmiter pin of the transistor as solder in the picture.

Next we have to solder +ve leg of LED to Collector pin of transistor and

solder -ve pin of LED to -ve of 2200uf capacitor as you can see in the picture.

Next solder 1K resistor to -ve pin of 2200uf capacitor/-ve leg of LED as solder in the picture.

Our circuit is completed.

So Now we have to connect input power supply wire to the circuit.

Connect +ve clip to Emmiter pin of Transistor and

Connect -ve clip to 1K resistor as you can see in the picture.

NOTE: We have to give 12V DC Input Power supply to this circuit.

Now LED will be flashing.