Department Of Electrical Engineering

Minor Project Report On

Kinetic Remote

In partial fulfillment for the award of the Bachelor of Technology Degree of the Rajasthan Technical University, Kota.

Submitted To: Submitted By:School of Electrical Engineering Ajay Singh Solanki

Ajit Choudhary Abhishek Kumar Choudhary Dharmendra Goyal Imam Ul Haque

JODHPUR ENGINEERING COLLEGE AND RESEARCH CENTRE, BORANADA, JODHPUR (RAJ) 342001

ACKNOWLEDGMENT

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I have taken efforts in this project. However, it would not have

been possible without the kind support and help of many

individuals and organizations. I would like to extend my sincere

thanks to all of them.

I am highly indebted to Mr. N. C. Purohit for their guidance and

constant supervision as well as for providing necessary information

regarding the project & also for their support in completing the

project.

I would like to express my gratitude towards my parents & friends

for their kind co-operation and encouragement which help me in

completion of this project.

My thanks and appreciations also go to my colleague in developing

the project and people who have willingly helped me out with their

abilities.

JODHPUR ENGINEERING

COLLEGE AND RESEARCH

CENTRE , JODHPUR

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2009-2010

CERTIFICATE

Project report entitled “KINETIC REMOTE” submitted by

"AJAY SINGH SOLANKI, AJIT CHOUDHARY, ABHISHEK

KUMAR CHOUDHARY, DHARMENDRA GOYAL, IMAM

UL HAQUE" student of final year B.Tech, Electrical

Engineering in partial fulfillment for the award of bachelor degree

in electrical engineering is approved for submission.

DATE:

Signature of guide: Counter Signature:

(Mr. VIKAS RATHORE) (Mr. N.C.PUROHIT)

Asst. Professor HOD

School of Electrical Engineering School of Electrical Engineering

JECRC , Jodhpur JECRC , Jodhpur

INDEX

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S. No. Content Page No.1. Introduction 62. General Diagram 73. Principle 84. Circuit Description 95. Circuit Diagram 106. Material Used 117. Prize of Material Used 178. Procedure 189. Application 2110. Advantages 22

KINETIC4

REMOTE

CONTROL

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INTRODCTI ON

Almost every entertainment gadgets at home, be it a TV, DVD

Player, Music System uses Infra Red Remote control. These

remote uses Infra Red Light for communication with the TV

device. Whatever the type of remote it uses batteries to power to

an Infra Rea LED, controlled by an electronic circuit that beams a

code sequence corresponding to the key that we press.

Unlike most other electronic gadgets an infra red remote has no on

off switches .the remote is always in on state, consuming very little

power when in a dormant state when a button is pressed goes into

an active state, transmit the control code and then goes into

dormant state again.

This project shows how to retro fit your regular remote control

device for battery free operation forever. This idea is not so much

is so on recurring batteries costs, but to remove batteries from the

system altogether.

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GENERAL DIAGRAM

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PRINCIPLE The voltage required by the remote control device is generated

using a DIY kinetic generator (shown above) that converts

mechanical power to electrical power, based on Faraday’s

principle. The device consists of a hollow tube of plastic or wood,

with a cylindrical magnet sealed inside the tube, and 1,400 turns of

enameled copper wire wound around the outer surface of the tube.

When the tube is shaken, the magnet travels the length of the tube

back and forth. This leads to a change of magnetic field as seen by

the wire, and generates an EMF (electromagnetic force) that is

proportional to the number of turns and the rate at which the

magnetic field is changed. Thus, if you shake vigorously rather

than gently, a larger EMF is generated. You can use this principle

to easily generate operating voltage for any infrared remote control

device.

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CIRCUIT DESCRIPTION

This circuit consist of four main parts:-

1. Infrared remote control device

2. Faraday voltage generator

3. Charge storage component

4. Voltage regulator

Shown here is the schematic of the Faraday voltage generator, the

charge storage capacitor (capacitor C1 consisting of two

4700μF/16V capacitors in parallel), and the voltage regulator

circuit based on a low dropout (LDO) regulator.

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CIRCUIT DIAGRAM

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MATERIALS

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Main component used in this project are as follow:-

[A] Enameled copper wire, 30 or 36 gauge:- Enough to roll

about 1,400 turns of wire. The gauge of the wire is not critical. We

used 36 gauge, but any other, preferably smaller gauge (larger

diameter), can also be us.

[B] Voltage regulator LP2950-3.3 (1):- This is a 3.3V output, low

dropout voltage regulator. The LP2950 is a micro power voltage

regulators with very low quiescent current (75μA typ.) and very

low dropout voltage (type 40mV at light loads and 380mV at

100mA).They are ideally suited for use in battery-powered

systems. Furthermore, the quiescent current of the LP2950

increases only slightly in dropout, prolonging battery life.

This device excellent choice for use in battery powered application

such as cordless telephone, radio control systems, and portable

computers.

FEATURES

● High accuracy output voltage

● Guaranteed 100 mA output

● Very low quiescent current

● Extremely tight load and line regulation

● Very low temperature coefficient

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● Current and thermal limiting

● Low dropout voltage

● Need only 1uF for stability

● Error flag warns of output dropout

APPLICATIONS

● High-efficiency linear regulator, voltage reference

● Battery powered systems

● Portable consumer equipment

● Desktop / Notebook computers

● Portable Instrumentation, cordless telephones Adjustable)

● Automotive Electronics, Radio control systems

● SMPS Post-Regulator, Avionics

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[C] 1N5819 Schottky diodes (4):- A Schottky diode is a special

type of diode with a very low forward-voltage drop. When current

flows through a diode there is a small voltage drop across the diode

terminals. A normal silicon diode has between 0.6–1.7 volt drops,

while a Schottky diode voltage drop is between approximately

0.15–0.45 volts. This lower voltage drop can provide higher

switching speed and better system efficiency

APPLICATIONS

Voltage clamping

Discharge protection

Power supply

[D] 4700μF/25V Electrolytic Capacitors (2):- Two of these

capacitors are used in parallel. An electrolytic capacitor is a type

of capacitor that uses an electrolyte, an ionic conducting liquid, as

one of its plates, to achieve a larger capacitance per unit volume

than other types. They are often referred to in electronics usage

simply as "electrolytic".

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They are used in relatively high-current and low-frequency

electrical circuits, particularly in power supply filters, where they

store charge needed to moderate output voltage and current

fluctuations in rectifier output.

They are also widely used as coupling capacitors in circuits where

AC should be conducted but DC should not. There are two types of

electrolytic, aluminum and tantalum.

Electrolytic capacitors are capable of providing the highest

capacitance values of any type of capacitor. However they have

drawbacks which limit their use

The electrolyte is usually boric acid or sodium borate in aqueous

solution, together with various sugars or ethylene glycol which are

added to retard evaporation

CIRCUIT SYMBOL

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Electrolytic capacitors are polarized and they must be connected

the correct way round, at least one of their leads will be marked +

or -. They are not damaged by heat when soldering.

[E] Rare earth magnets (4):- cylindrical shape, 1T strength, ½"

diameter. Rare-earth magnets are strong permanent magnets

made from alloys of rare earth elements. Rare-earth magnets are

the strongest type of permanent magnets made, substantially

stronger than ferrite or alnico magnets. The magnetic field

typically produced by rare-earth magnets can be in excess of 1.4

tesla, whereas ferrite or ceramic magnets typically exhibit fields of

0.5 to 1 tesla. There are two types: neodymium magnets and

samarium-cobalt magnets. Rare earth magnets are extremely

brittle and also vulnerable to corrosion, so they are usually plated

or coated to protect them from breaking and chipping.

APPLICATIONS

Common applications of rare-earth magnets include:

• computer hard drives

• audio speakers / headphones

• bicycle dynamos

• fishing reel brakes

• permanent magnet motors in cordless tools

• self-powered torches, employing rare earth magnets for

generating electricity in a shaking motion

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Prize of Components Used:-

Name of component Quantity Prize(Rs.)Copper Wire 45 gm 25Glass Tube 1 10PCB 1 20Schottky Diode 4 40Electrolytic Capacitor 2 40Low Drop Out Regulator 1 30Rare Earth Magnet 7 20Remote 1 50Remote Tester 1 150

PROCEDURE

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1. Groove the tube (optional). The groove is where

you’ll wrap the wire. If you don’t have access to a lathe with

which to cut a groove, the wire can be wound directly onto the

plain tubing. Just use plenty of masking tape to ensure the

wire doesn’t unwind.

2. Wind the wire. Fill the groove with 1,400 turns of 36

SWG enameled copper wire. If you have a coil-winding

machine, it will be a lot easier. If not, you can improvise with

a power drill and a helper: use the drill to slowly rotate the

tube while a friend, wearing work gloves, feeds the wire to

you. Leave about 6" of wire free on each end. When you’re

done, cover the wire coil with masking tape, and use 1mm-

diameter heat-shrink tubing to cover the 2 free ends of the

wire. If you didn’t groove the tube, just wind the copper wire

directly onto the plain acrylic tube. Be sure to use plenty of

masking tape to ensure that the wire doesn’t unwind.

3. Place the magnets inside the Faraday generator tube,

stacking all 7 to make 1 big magnet and seal the ends.

4. Remove the batteries from the remote control and file

down the entire battery compartment to remove all extrusions.

Also file a notch in the side of the battery compartment and

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the compartment cover, so you can run the wires from the

Faraday generator inside.

5. Assemble the components from the circuit diagram

(capacitors, diodes, and LDO voltage regulator) on a

perfboard as shown in below figure. You can test the

continuity with a multi meter.

6. Solder the output of the voltage regulator circuit onto

2 hookup wires on one end of the perfboard. You’ll eventually

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solder these hookup wires to the battery terminals of the

remote control.

7. Connect the Faraday generator. First solder 2 hookup

wires in the middle of the perfboard to the input of the bridge

rectifier (cathodes of diodes D3 and D4, respectively, in the

circuit diagram). Then solder the wires from the Faraday

generator to these hookup wires.

8. Reassemble the TV remote, and fit the circuit board

inside the battery compartment.

9. On the remote control’s original circuit board, cut

down the battery terminals so that they can be soldered to the

voltage regulator circuit board. Solder them to your voltage

regulator output wires.

10. Tie the Faraday generator temporarily to the TV

remote body using cable ties, and shoot more hot glue

between the remote and the Faraday tube. Now you’re ready

to shake!

APPLICATION20

This type of remote can be used for any type of electronic gadget

like TV, DVD Player, Music Player, Air Conditioner etc. means

these type of remote can be used anywhere, where we used remote

control.

We can also implement this idea for Robotics. This can also be

used for security system of the cars or any other four wheeler.

ADVANTAGES

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By using this type of remote we are not depend upon the batteries.

By some manual effort (shaking) the remote can be used for about

15-20 times. It turns out that it’s easy to bag the batteries, as long

as you are willing to put in a little manual effort.

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