3 LED flasher circuit using transistor
Here is another type of LED flasher circuit but this circuit is also about the same as my previous led chaser, here is some change in this circuit. This is a Very Easy and beautiful LED chaser that is made using without any ic. only transistors, capacitors and resistors are used to make this LED chaser Circuit. This is 3 channel Flashing chaser circuit, 3 step Flashing effect blink One by one. You can connect Relay and then high voltage AC bulb for blinking purposes. The main working function of this circuit is based on to capacitor charging and discharging timing through the transistor switching.
You can use 5v to 12v DC power supply for operating this led flasher circuit. Use battery or any ac to dc adaptor.
All transistors are BC547 are used in this circuit. Capacitors you can use between any value of 100uf-470uf. The circuit is very simple. This is one of the best, easy and effective circuit for Beginners and LED lovers. You can arrange LEDs in different patterns as you like and can connect more LEDs with one transistor up to 6. Use can also use transistor 2N2222 at the place of BC547 and connect Upto 20 LED with one transistor.
Schematic diagram
Components
Resistor
10K -3, 470 Ω -3
Transistors- BC547B-3
Capacitors- 220uf 25v – 3
LED- 3 – 9
Also read
LED Special Sequence Effect Circuit
your circuit has an error. The LEDs are constantly ON
This circuit tested on breadboard and also simulated on software.
This worked perfectly with 3 transistors. If you connected more than 3 then fluctuation will different.
I will make this
This circuit is tested using circuit wizard software, but it would be work in proteus.
You try to change the values of capacitors or resistors