But the supply voltage not be less than 9v otherwise the circuit might fail to work correctly.
Transistor flasher schematic.
Which be the circuit that is simple but at this time a friend someone complain to come to that want the circuit that use the transistor.
We can create a dancing led circuit by combining many similar circuits which we can use for advertisement boards.
Cree white led matrix xls.
This led flasher circuit is very easy and simple and there is no ic used.
In the second circuit a power fet is used in place of the npn.
In the first circuit a flasher circuit in series with a 220 ohm resistor turns on a power transistor.
This circuit can be operated using dc 6 12v supply.
Parts list for the proposed single transistor led flasher circuit.
The two circuits below are typical connections.
Both npn transistor you can use of bc547 548 or 2n2222.
Lamp flasher circuit using 2n2907 bipolar transistor i has evered to play the leading role lamp flasher circuit with the integrated circuit.
R1 2k7 r2 100 ohms t1 bc 547 c1 100 uf to 470 uf.
The transistors do not necessarily have to be bc547 you may use 2n2222 or similar small signal transistors but it is recommended to always use the equivalent transistors.
Led any type any color.
Key to the brightness is the led.
Circuit diagram blinking led circuit.
This circuit basically works on the charging and discharging of capacitors.
Cree white led matrix copied from the digikey search engine and edited numerous devices are available.
I selected a cree device cree is well known for ultrabright white leds.
Power transistors may be added for handling higher current loads.