Sunday, January 21, 2018

Running LED Circuit

Running led is a basic applicative circuit whose usage can be modified in such a way that it can form running letters, drawings or characters running by arranging the led in accordance with our wishes.

Running Led circuit scheme :
running led circuit

Component:
  1. LED
  2. R1=1K
  3. R2-R8=220 Ohm
  4. VR=10K
  5. C1=10pF
  6. IC1=555
  7. IC2=4017
  8. B1=Battrey  9V

Circuit Explanation:

IC4017 is an IC decade counter that outputs high value (logic 1) alternately with timer term corresponding to timer / clock that goes into the IC, as the clock generator we use IC 555 with asatable base circuit, duration of this clock / timer can we set by rotating the variable resistor.




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