LED Blinking Circuit | LED Blinking circuit using Transistor | simple LED blinking circuit | LED flashing

Blinking LED circuits provide visual alerts and indications using electronic oscillator systems and digital timing. 555 timer as stable or monostable oscillators offer simple blinker circuits. Transistor multivibrator and JFET Transistor relaxation oscillator designs enable discrete-component LED blinkers.

LED flashers are semiconductor-integrated circuits (ICs) used to turn on and off groups of light-emitting diodes, either sequentially or according to a programmed pattern. They are found in circuits used as indicators and controllers, as well as in home-built electronic projects.

Flicker happens due to rapid voltage variations, or a “ripple” in a current, which then leads to a ripple in light output—a flicker. All types of lights are susceptible to flicker, including incandescent, halogen, and, yes, even LED Light. But the effects aren't the same for every type of light.

Flashing circuits are very interesting. They grab your attention and can be used in many applications system. They consume very little energy, and some circuit diagrams.

Connect both transistors on the breadboard. Now connect the 1k ohm resistor from the base of the BC547 to the collector of the 2N3906 transistor. Connect the 1.2 uF capacitor from the collector of BC547 to the base of 2N3906.