How LED blink

[Ezugudor]

Hi pls can anyone explain to me the device that makes a LED to blink in a circuit and how it does that

 

[Reloadron]

Really depends on the circuit but for all practical simple purposes it turns the LED on and off. That can be done several ways. Pulses from a clock or other source is one method. The LED can be turned on and off for equal periods or on a short time and off longer time. Your question is a little open ended with several answers.

Ron

 

[Hero999]

You can buy blinking LEDs so a circuit is not normally needed unless it's purely for educational purposes.

 

[nuclearrambo]

LEDs can be made to blink by applying a low frequency square wave to its terminals. You can use 555 timer IC to make LEDs blink or stuffs like that >_>

 

[RODALCO]

Or build a simple flip flop circuit with 2 transistors, 2 capacitors 4 resistors and one or two led's to suit the purpose.