3. 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.
Pankaj Kumar Nayak

4. THIS CIRCUIT CONTAINS THE
BASIC ELEMENT LIKE
TRIAC(BT136),DIAC(DB3),CERA
MIC CAPACITOR 0.15UF-
250VOLT,RESISTOR
2.2Kohm,POTENTIOMETER
470Kohm AND TWO PIN
CONNECTOR.
THE BT136 AND DB3 IS A
POWER ELECRONIC ELEMENTS.

5. 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

6. 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

8. 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

9. 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

10. 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.

12.  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

13.  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.

14. 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.