Transistor Flasher Schematic

Cree white led matrix copied from the digikey search engine and edited numerous devices are available.

Transistor flasher schematic.

R1 2k7 r2 100 ohms t1 bc 547 c1 100 uf to 470 uf. Led any type any color. The two circuits below are typical connections. Can be used on roads for signaling purposes.

Circuit diagram blinking led circuit. 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. 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. Lamp flasher circuit using 2n2907 bipolar transistor i has evered to play the leading role lamp flasher circuit with the integrated circuit.

This circuit basically works on the charging and discharging of capacitors. Both npn transistor you can use of bc547 548 or 2n2222. Key to the brightness is the led. Use 9v or 12v battery or adaptor for this circuit.

Power transistors may be added for handling higher current loads. In the first circuit a flasher circuit in series with a 220 ohm resistor turns on a power transistor. In the second circuit a power fet is used in place of the npn. Cree white led matrix xls.

But the supply voltage not be less than 9v otherwise the circuit might fail to work correctly. I selected a cree device cree is well known for ultrabright white leds. This led flasher circuit is very easy and simple and there is no ic used. This circuit can be operated using dc 6 12v supply.