5 LED CHASER USING a TRANSISTOR

MATERIALS USED

1)BC547 TRANSISTORS 5NOS

2)5 LED

3)100 MFARAD CAPACITOR 5

4)220 OHM RESISTOR 5

5)10k RESISTOR 5

6) 9V POWER SUPPLY

Step 1: FIX 5 TRASSISTORS ON BREADBOARD

FIX 5 TRANSISTORS ON BREADBOARD SUCH THAT THEIS FLAT SIDE FACES AGAINST YOU.

Step 2: CONNECT RESISTOR

CONNECT BASE OF TRANSISTOR TO 10K RESISTOR AND CONNECT OTHER END OF RESISTOR TO POSITIVE RAIL

Step 3: INSERT LED

CONNECT CATHODE OF EACH LED TO THE COLLECTOR OF EACH TRANSISTOR AS SHOWN IN IMAGE

Step 4: CONNECT 270 OHM RESISTOR

CONNECT ANODE OF LED LED TO THE 270OHM RESISTOR AND CONNECT OTHER END OF RESISTOR TO POSITIVE RAIL.

Step 5: EMITTER TO NEGATIVE RAIL

CONNECT EMITTER OF TRANSISTOR TO NEGATIVE RAIL.

Step 6: ADD 100 MICROFARAD CAPACITOR

CONNECT ANODE OF CAPACITOR TO THE EMITTER OF FIRST TRANSISTOR AND CATHODE TO THE BASE OF SECOND TRANSISTOR. CONNECT 5TH CAPACITORS CATHODE TO THE BASE OF FIRST TRANSISTOR.

Step 7: FIRE UP

CONNECT 5V OR 9V POWER SUPPLY

Comments

[maharanasuprabha211]

its not working at all dont upload like this circuit which is not working or not tested because i tried its not working properly and image also not clear please be sure with ur ckt

[Sona15121999]

I Want Working of led chaser by using transistor

[TusharB43]

Plz send me working of it

[VanshikaN]

very good post, please also mention working of this circuit if possible. Regards (Sonu Modal & Project Makers Noida, India, UAE, [phone]).

[gm280]

Again, a schematic diagram would be interesting. People that want to built your circuits will need a schematic diagram to allow them to understand how everything is connected to all the other parts. JMHO