This document describes a remote controlled power saver circuit project submitted by 5 students under the guidance of their professor. It includes block diagrams of the transmitter and receiver circuits which use a mobile phone as the wireless medium. The transmitter circuit uses a JK flip-flop, voltage comparator, and relay circuit to control loads like fans or air conditioners. The receiver circuit obtains a vibration voltage signal from the mobile to drive an astable multivibrator using a 555 timer IC to switch the relay on and off. Future work is proposed to fully construct and test the circuit, analyze signal waveforms, and ensure security of the receiving mobile.

1. UNDER THE GUIDANCE OF: MR. DIBYENDU SUR
ASSISTANT PROFESSOR
APPLIED ELECTRONICS AND INSTRUMENTATION ENGINEERING
GURUNANAK INSTITUTE OF TECHNOLOGY
SUBMITTED BY:
•SOURAV SEN
•SUMAN ROY
•NIKITA GANGULY
•TANMOY CHOWDHURY
•SANHATI CHOUDHURY

2. BLOCK DIAGRAM OF REMOTE
CONTROLLED POWER SAVER
TRANSMITTER
OR
CALLING MOBILE
WIRELESS
MEDIUM
RECEIVING
MOBILE
VOLTAGE
COMPARATOR
JK FLIP – FLOP
RELAY CIRCUIT
TO LOAD
CIRCUIT

3. SNAPSHOT OF THE MOBILE BEING
USED IN OUR PROJECT AND THE
RECEIVED VOLTAGE
Vibration
voltage
(4.02 v)

4. LOGICAL DEMONSTRATION OF
REMOTE CONTROL CIRCUIT

7. JK FLIP FLOP CIRCUIT CONNECTION
UNDER TOGGLE CONDITION

8. FLIP-FLOP TESTING UNDER TOGGLE
CONDITION FUNCTION GENERATOR

9. ASTABLE MULTIVIBRATOR USING
NE 555 TIMER

10. SNAPSHOT OF DESIGNED ASTABLE
MULTIVIBRATOR

11. RELAY CIRCUIT

12. LOAD( AIR
CONDITIONER,FAN,BULB )

13. SNAPSHOT OF TOTAL CIRCUIT

14. PROPOSED WORK
•Total circuit of slide no.4 is to be constructed.
•Relay circuit implementation is to be performed.
•The exact waveform of voltage signal derived from
mobile is to be
fully analyzed.
•The proper RC values of the astable multivibrator
using NE 555 timer has to be determined.
•Proper security to the receiving mobile is to be
ensured.
•The no. of ring counts of the mobile can be used for
switching

16. REFERENCES
1. Digital. Logic. and. Computer. Design. M. Morris. Mano
2. www. alldatasheet. com
3. forum.xda-developers.com
4. www. technologystudent. Com
5. Electronics for you magazine
6. Linear Integrated Circuits, D Roy Choudhury, Shail B. Jain
7. www. mit.edu/~6.301/OP07_a.pdf
8. www. ti.com/lit/ds/slfs022h/slfs022h.pdf

17. THANK YOU…………………..