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WEL COME TO INNOVATION WORLD

Dimmer CKT

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Page 1: Dimmer CKT

WEL COME

TO INNOVATION

WORLD

Page 2: Dimmer CKT

BRIGHTNESS CONTROL OF

INCANDESCENT, HALOGEN LAMP,

LIGHT BULB AND FAN CONTROL BY

WIRELESS REMOTE CONTROL . PRESENTED BY:

PANKAJ KUMAR NAYAK(EE)

Page 3: Dimmer CKT

This technology will help you to control the brightness of your light according to your need.

This technology will very useful to save the energy and money.

This technology will save you from electric shock hazard. because this technology involves the wireless switch es which is indirect contact with electricity.

By this technology you can control your all appliances and equipments by remote control switches.

It is very cost effective to buy, small size and easier to install for everywhere.

INTRODUCTION

Pankaj Kumar Nayak

Page 4: Dimmer CKT

BRIGHTNESS CONTROL OF LIGHT CIRCUIT:

THIS CIRCUIT CONTAINS THE BASIC ELEMENT LIKE TRIAC(BT136),DIAC(DB3),CERAMIC CAPACITOR 0.15UF-250VOLT,RESISTOR 2.2Kohm,POTENTIOMETER 470Kohm AND TWO PIN CONNECTOR.

THE BT136 AND DB3 IS A POWER ELECRONIC ELEMENTS.

Page 5: Dimmer CKT

WORKING PRINCIPLE OF BRIGHTNESS CONTROL OF LIGHT CIRCUIT:

This is basic explanation of dimmer circuit. Here potentiometer changes the magnitude of AC pulse by varying the resistance. Then capacitor stores the charge up to its limit and discharge through the diac.Then Diac will provide the trigger pulse in each time to the triac.So that triac will activate in each trigger pulse and provide voltage change.

Pankaj Kumar Nayak

Page 6: Dimmer CKT

WIRELESS CONTROL PRINCIPLE

IN THIS PROJECT WE USE RADIO FREQUENCY(RF) CONTOLLER.BECAUSE IT IS VERY COST EFFECTIVE AND EASILY AVAILABE IN MARKET.

RF CONTROLLER PROVIDES VERY LARGE RANGE OF OPERATION DUE TO USE OF ANTENA INSTEAD OF IR CONTROLLER.

GENERALLY IT USES AN ENCODER AND DECODER IN TRANSMITTER AND RECIVER PART i.e. HT12E AND HT 12D.

IT ALSO USES ANOTHER PARTS i.e. RF TRANSMITTER AND RF RECIVER.

Pankaj Kumar Nayak

Page 7: Dimmer CKT

RF CONTROLLER CIRCUIT DIAGRAM

Page 8: Dimmer CKT

POWER SUPPLY CIRCUIT AND OPERATION

This is the basic power supply circuit. which will provide 12 volt and 5volt

constant Dc voltage through voltage regulator ic i.e. LM7812 and LM7805.

Pankaj Kumar Nayak

Page 9: Dimmer CKT

BASIC PRINCIPLE BEHIND DIMMER CIRCUIT USING RF CONTROLLER:

The dimmer circuit is totally depend on variable resistance i.e. provided by potentiometer. The potentiometer is controlled by an automatic driven motor which is controlled by RF controller.

The RF controller provide 5 volt dc at receiver part when the different switches is turn on at transmitting part.

Using LM324 opamp the 5 volt dc is converted to 12 volt dc for relay control. when relay is turn on then motor will start and drive the potentiometer. Which results the change in resistance to trigger the diac and triac to provide different pulse for brightness control of the bulb.

Similarly fan control is also done by another switch with another relay.

Pankaj Kumar Nayak

Page 10: Dimmer CKT

DC VOLTAGE BOOSTER CIRCUIT FOR RELAY OPERATION:In this circuit 5volt dc voltage is given by RF controller i.e. from receiver part.This dc voltage is directly fed to LM324 ic with inverting configuration which will provide the output of 10 volt.This 10 voltage DC is sufficient for operation of relay.Here the vcc is provide by LM7812 i.e 12 volt dc.

Page 11: Dimmer CKT

CIRCUIT DIAGRAM:

Page 12: Dimmer CKT

COMPONENTS DETAIL

BT136 (TRIAC) RATING OF 400 VOLT DIAC (DB3) {BREAK OVER VOLTAGE 30 VOLT} POTENTIOMETER

470Kohm,RESISTOR(2Kohm,2.2Kohm,270 ohm)

CAPACITOR(0.15uf,470uf/25 VOLT,100uf/15 VOLT,)

LED,LM7805 & LM7812 VOLTAGE REGULATOR,SWITCH,1N4007 DIODE

12 VOLT SPDT RELAY 2 PIN SCOKET RF TRAMSMITER & RECIVER HT12E (ENCODER) & HT12D (DECODER) ANTENNA,LM324(OPAMP) 12 VOLT AC GEARED MOTOR SPEED OF 3.5

RPM 230/12 VOLT TRANSFORMER PCB/VERO BOARD 230 VOLT AC FAN & 200 WATT BULB OR

HALOGEN LAMP

Pankaj Kumar Nayak

Page 13: Dimmer CKT

FUTURE ENHANCEMENT: This project can operate more

effectively if we will use microcontroller i.e. ATMEGA16(which is from AVR family).

The circuit size can be minimized if we will use SMD(Surface Mount Device) element by embedded design process.

This circuit can operate more than 5 switch at a time. That means we can control all the switches present in our house switch board by wireless remote.

Page 14: Dimmer CKT

CONCLUSION

This project is very helpful because it will reduce the

electric shock hazard and it will provide a comfortable switching

operation over AC line and application. It can easily install

in switch board.

PRESENTED BY:PANKAJ KUMAR NAYAK(EE)

Page 15: Dimmer CKT

THANK YOU…

PRESENTED BY :PANKAJ KUMAR NAYAK(EE)