Dimmer CKT

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BRIGHTNESS CONTROL OF INCANDESCENT, HALOGEN LAMP, LIGHT BULBAND FAN CONTROL BY WIRELESS REMOTE CONTROL .

WEL COME TO Innovation world

BRIGHTNESS CONTROL OF INCANDESCENT, HALOGEN LAMP, LIGHT BULBAND FAN CONTROL BY WIRELESS REMOTE CONTROL .

Presented By:

Pankaj Kumar Nayak(EE)

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

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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.

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

WIRELESS CONTROL PRINCIPLEIN 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

RF CONTROLLER CIRCUIT DIAGRAM

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

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

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.

CIRCUIT DIAGRAM:

COMPONENTS DETAIL

BT136 (TRIAC) RATING OF 400 VOLTDIAC (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 DIODE12 VOLT SPDT RELAY2 PIN SCOKETRF TRAMSMITER & RECIVERHT12E (ENCODER) & HT12D (DECODER)ANTENNA,LM324(OPAMP)12 VOLT AC GEARED MOTOR SPEED OF 3.5 RPM230/12 VOLT TRANSFORMERPCB/VERO BOARD230 VOLT AC FAN & 200 WATT BULB OR HALOGEN LAMP

Pankaj Kumar Nayak

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.

CONCLUSIONThis 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)

THANK YOUPresented by :Pankaj kumar nayak(EE)