SUBMITTED BY:-SMRUTI RANI PATRO6TH SEM, E&TCF1001203058

SUBMITTED TO:-Er. AMULYA KUMAR PANDA(H.O.D, E&TC)

A PROJECT SEMINAR ON

RANDOM RUNNING LIGHTS

Introduction Block diagram Circuit diagram Component Layout

Transformer Rectifier Resistors Capacitors LED 556 Dual timer IC Switch

LED arrangement Front panel of the project Conclusion

contents

Many types of lamps are used for turn signal, brake lamps, side and clearance marker lamps, and interior lamps.

The simple, inexpensive but reliable electronic device may find numerous application such as warning indicators, exit door indicator in an auditorium, house number flasher, seat number indicator etc.

introduction

Block diagram

circuit diagram

Following are the different components used in this project.

1. Transformer2. Rectifier3. Resistors4. Capacitors5. LED6. NE 556 IC7. ON-OFF switch8. Connecting Wires

components

Transformer

It is a static electromagnetic device which transfers electrical energy(power) from one magnetic circuit to another magnetic circuit keeping frequency constant.

components

Rectifier• converts AC to DC.• Here bridge rectifier is used.

components

Resistors1. A resistor is a passive two-terminal electrical component that

implements electrical resistance as a circuit element.

Capacitors A capacitor (originally known as condenser) is a passive two-

terminal electrical component used to store energy in an electric field.

components

LEDA light-emitting diode (LED) is a semiconductor light source. LEDs are used as indicator lamps in many devices and are increasingly used for other lighting.

components

Switch• In electrical engineering, a switch is an electrical

component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another.

556 Dual timer IC• It is dual version of 555 timer IC. So it can be called as dual

timer IC. • It can be substituted by NE 566 F, NE 566 N, LM 556, MC

3456, SE 556, TDB 0556.The dual timer 556 can be used with a supply voltage (Vs) in the range 4.5 to 15V (18V absolute maximum).

components

(PinDescription)

components

Led arrangement

Random Running Lights consumes very little Electricity.

It is an simple, inexpensive project.

It has many applications such as exit door indicators, house number flasher, seat number indicators, warning indicators etc.

conclusion

ANY QUERIES ?

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