How to make LED chaser Circuit With NE555 Ic and BC547 NPN Transistor

 How to make LED chaser Circuit With NE555 Ic and BC547 NPN Transistor

Today I am going to make an LED Chaser circuit using NE555 IC and BC547 Transistor.This LED Chaser is different from other LED Chasers circuit.

This is the Pinout of BC547 Transistor.

C - Collector,

B - Base and

E - Emmiter

Connect emitter pin of one transistor to base pin of other transistor and like this we have to connect all transistors as you can see in the picture.

Solder 10K resistor to base pin of all transistors and other side of 10K resistor connect each other as connected in the picture.

Next solder 330 ohm resistors to +ve Legs of all LEDs as you can see in the picture.

Next solder -ve legs of all LEDs to Collector pins of all transistors as solder in the picture.

Next connect +ve Legs of all LEDs to each other as solder in picture.

Connect Anode of 1N4007 Diode to 10K Resistors and Cathode to +ve legs of all LEDs as you can see in the picture.

Solder 2.2K Resistor between Anode and Cathode of 1N4007 Diode as you can see in the picture.

Next Solder +ve pin of 25V 470uf capacitor to 10K Resistor/Anode of Diode and -ve pin to Emmiter pin of 5th transistor as you can see in the picture.

Next solder 100uf capacitor to the IC.

Solder +ve pin of capacitor to pin-2 and -ve pin to pin-1 of the IC as solder

 How to make LED chaser Circuit With NE555 Ic and BC547 NPN Transistor

Today I am going to make an LED Chaser circuit using NE555 IC and BC547 Transistor.This LED Chaser is different from other LED Chasers circuit.

This is the Pinout of BC547 Transistor.

C - Collector,

B - Base and

E - Emmiter

Connect emitter pin of one transistor to base pin of other transistor and like this we have to connect all transistors as you can see in the picture.

Solder 10K resistor to base pin of all transistors and other side of 10K resistor connect each other as connected in the picture.

Next solder 330 ohm resistors to +ve Legs of all LEDs as you can see in the picture.

Next solder -ve legs of all LEDs to Collector pins of all transistors as solder in the picture.

Next connect +ve Legs of all LEDs to each other as solder in picture.

Connect Anode of 1N4007 Diode to 10K Resistors and Cathode to +ve legs of all LEDs as you can see in the picture.

Solder 2.2K Resistor between Anode and Cathode of 1N4007 Diode as you can see in the picture.

Next Solder +ve pin of 25V 470uf capacitor to 10K Resistor/Anode of Diode and -ve pin to Emmiter pin of 5th transistor as you can see in the picture.

Next solder 100uf capacitor to the IC.

Solder +ve pin of capacitor to pin-2 and -ve pin to pin-1 of the IC as solder