Transistor Flasher Schematic

Key to the brightness is the led.

Transistor flasher schematic.

Cree white led matrix copied from the digikey search engine and edited numerous devices are available. Can be used on roads for signaling purposes. But the supply voltage not be less than 9v otherwise the circuit might fail to work correctly. This circuit basically works on the charging and discharging of capacitors.

In the first circuit a flasher circuit in series with a 220 ohm resistor turns on a power transistor. The two circuits below are typical connections. Lamp flasher circuit using 2n2907 bipolar transistor i has evered to play the leading role lamp flasher circuit with the integrated circuit. This circuit can be operated using dc 6 12v supply.

The flashing rate could be varied either by changing the value of r1 or c1 or both together. Both npn transistor you can use of bc547 548 or 2n2222. This led flasher circuit is very easy and simple and there is no ic used. 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. In the second circuit a power fet is used in place of the npn. We can create a dancing led circuit by combining many similar circuits which we can use for advertisement boards. 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.

Circuit diagram blinking led circuit. I selected a cree device cree is well known for ultrabright white leds. Power transistors may be added for handling higher current loads. Parts list for the proposed single transistor led flasher circuit.