Dancing L8

DANCING LIGHT

SUBMITTED BY : XXXXXXXXROLL NO. : XXXXXXXXX

DIPERTMENT : XXXXXXXXXXXXXXX

INSTITUTE NAME : XXXXXXXXX

CONTENT TABLE:

SL.NO. CONTENT1. DIAGRAM2. PRINCIPLE OF OPERATION3. COMPONENT4. DESCRIPTION OF MAJOR

COMPONENT5. PICTURE6. PROCEDURE7. GUIDES8. BIBLIOGRAPHY

diagram

PRINCIPLE OF OPERATION:

• Here is a simple dancing light circuit based on NE555 (IC1) & CD4017

(IC2) .• The IC1 is wired as an astable multivibrator to

provide the clock pulses for the CD4017.• For each clock pulse receiving at the clock input

(pin14) of IC CD4017, the outputs Q0 to Q9 (refer pin diagram of CD 4017) becomes high one by one

alternatively.• The LEDs connected to these pins glow in the same

fashion to give a dancing effect. The speed of the dancing LEDs depend on the frequency of the clock

pulses generated by the IC1.

COMPONENTS:IC: a) NE555 : 1 PC b) CD4017 : 1 PC

LED : 8PCS RESISTANCE:

a) 220 Ohm : 8 PCS b) 10 KOhm : 1 PC c) 100 Kohm : 1 PC

(VARIABLE)CAPACITOR: a) 10 UF : 1 PCBATTARY : 9V

Description of Major Component

IC 555 : The 555 timer is an integrated circuit(chip) , used for generating accurate timing pulses. It is an 8pin timer IC & mainly 3 modes of operation:

Monostable, Astable &

Bistable.

CD 4017 : The CD4017BC is a 5-

stage divide-by-10 Johnson counter with 10 decoded outputs and a carry out bit.

RASISTANCE

LED CAPACITOR

BATTERY:

9 VOLT

PROCEDURE:1. STUDY OF THE CIRCUIT DIAGRAM2. CLEANING OF THE LEADS OF THE

COMPONENTS3. PLACING THE COMPONENTS IN

PROPER PLACE IN VERO BOARD4. SOLDERING THE LEADS5. CONNECTING REQUIRED POINTS

BY WIRE6. REVIEWING THE WHOLE CIRCUIT7. ATLAST CONNECTING THE

BATTERY

GUIDES:

OUR RESPECTED TEACHERS:

BIBLIOGRAPHY:

INTERNETTEXT BOOK

THANK YOU