Transistor Flasher Circuit

Parts list for the proposed single transistor led flasher circuit.

Transistor flasher circuit.

These types of circuits are useful when we need a decoration in our homes or in our hobbies like we used to make a little home from scrapes and. Simple blinking led circuit. R1 2k7 r2 100 ohms t1 bc 547 c1 100 uf to 470 uf. 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. So follow every step and learn about how to make your own led blinking circuit. Use 9v or 12v battery or adaptor for this circuit. But the supply voltage not be less than 9v otherwise the circuit might fail to work correctly.

It was the first circuit i ever built and it felt great. This led flasher circuit is very easy and simple and there is no ic used. We can create a dancing led circuit by combining many similar circuits which we can use for advertisement boards. This two transistor led flasher circuit is easy to build.

The flashing rate could be varied either by changing the value of r1 or c1 or both together. Flashing led circuit aka blinking led circuit is one of the simple circuits to make in electronics projects that demonstrate the viewer about the working of transistors in switching state. A two led flasher is a simple modification of this circuit but is arranged so that one led switches on when the other switches off or vice versa. The blinking led circuit is like the electronics version of the hello world program.

This circuit basically works on the charging and discharging of capacitors. Both npn transistor you can use of bc547 548 or 2n2222. Three different ways to build a blinking led circuit. The parts list includes.

Circuit diagram blinking led circuit. The resistor r and capacitor c determines the timing of the flasher and the period is proportional to r c. When we power up the circuit the led blinks continuously. Led blinking using transistor bc547.

The circuit is built using transistors resistors capacitors and leds. Can be used on roads for signaling purposes. A very simple circuit that you can build to blink or flash leds. This circuit uses a bc557 pnp transistor connected to a bc547 npn transistor in such a way so that the bc547 conducts for a very brief time making the led light.

This circuit can be operated using dc 6 12v supply. 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. Figure 14 shows the practical circuit of a transistor two led flasher which can be converted to single led operation by simply replacing the unwanted led with a short circuit. In the second circuit a power fet is used in place of the npn.

Led any type any color. Led flash for alerts. Of course you will need a breadboard wire jumpers and a power source. Power transistors may be added for handling higher current loads.

The goal is to make a light emitting diode led blink.