Blinky

Wingslash

making the world smarter

Circuit:

Components:

· IC555-1

· 10k pot-1

· 1k-5

· 330E-1

· 100uf-1

· LED-2

Working:

we are using IC555 in Astable mode. this produces a square wave. which turns ON and OFF the LED. hence by varying the resistance R1 or RV1 we can generate different frequency and duty cycle pulses. the capacitor starts charging via R1 and VR1.The LED remains ON till the capacitor reaches 2/3rd of VCC. at this point, pin 7 and pin 3 go to ground. hence the LED goes off.it takes some time for the charge to drain through RV1. the time taken to discharge is the time LED will remain OFF. we have connected pin 6 and pin 2. when the voltage reached 1/3rd of VCC pin 2 is triggered causing LED to go high. this disconnects pin 7 from ground. and the cycle repeats. making the LED blink

Comments

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