ppt of MOBILEBUG project

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MOBILE BUGROLL.NO:09TM1A0465

Internal guide:

SAHAJA COLLEGEKARIMNAGAR.

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AIM OF THE PROJECT1.Used to prevent the mobile phones in examination

halls, confidential rooms ,etc.

2.It is also useful for detecting the use of

mobile phone for spying and unauthorised videotransmission.

3.The mobile bugs are highly useful for parents to keep

track on the activities of their teenaged kids.

4. The employers can also use it for performingsurveillance over their employees.

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INRODUCTION: This handy, pocket-size mobile transmissiondetector can sense the presence of an activated mobile phone from a

distance of oneand-a-half metres. So it can be used to prevent use of mobile

phones in examination halls, confidential rooms,etc. It is also useful for

detecting the use of mobile phone for spying and unauthorised video

transmission.

CIRCUIT DIAGRAM:

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>This circuit consists of only BC548Transistor.

>And it contains only one LED.

>AS It consists of Two I.Cs : CA3130 ,NE555>This also consists of one Battery ,one Switch & one

Buzzer.

RESULT: To avoid the malpractice in examination halls.

To prevent the use of mobile phones in

examinationhalls, confidential rooms &etc..

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INTRODUCTION The technology has gone to the extent of spying

mobile phones belonging to others. This iscalled mobile bugging and is performed with the

help of special mobile software. You dont even

need special mobile accessories for mobilebugging to spy mobiles.

Mobile bugging is meant to spy mobiles phones

of others without their knowledge. Mobile bugging can be done directly from other

phones or even from a web application. Mobile

bugs or cell phone bugs can be activated fromcommands that are invisible to s ied mobile

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Need for Mobile Bugging:

There are many benefits of mobile software meant forcreating mobile bugs. Here are some of them.

The mobile bugs are highly useful for parents to keeptrack on the activities of their teenaged kids.

The employers can also use it for performingsurveillance over their employees.

Mobile bugs can also be useful for spying on cheatingspouses.

Find lost people with the help of mobile trackingfeatures of mobile bugging.

Mobile bugging is therefore becoming popular thesedays.

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OPERATION OF THE CIRCUIT:

The circuit can detect both the incoming and outgoing calls, SMS and

video transmission even if the mobile phone is kept in the silent mode.

The moment the bug detects RF transmission signal from an activated

mobile phone, it starts sounding a beep alarm and the LED blinks. The

alarm continues until the signal transmission ceases.

An ordinary RF detector using tuned LC circuits is not suitable for

detecting signals in the GHz frequency band used in mobile phones. The

transmission frequency of mobile phones ranges from 0.9 to 3 GHz with a

wavelength of 3.3 to 10 cm. So a circuit detecting gigahertz signals is

required for a mobile bug.

Here the circuit uses a 0.22F disk capacitor (C3) to capture the RF signals

from the mobile phone. The lead length of the capacitor is fixed as 18 mmwith a spacing of 8 mm between the leads to get the desired frequency.

The disk capacitor along with the leads acts as a small gigahertz loop

antenna to collect the RF signals from the mobile phone.

Op-amp IC CA3130 (IC1) is used in the circuit as a current-to-voltage

converter with capacitor C3 connected between its inverting and non-- -

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rapidly replaced the vacuum tube as an electronic signal regulator. A

transistor regulates current or voltage flow and acts as a switch or gate for

electronic signals. A transistor consists of three layers of

a semiconductor material, each capable of carrying a current.

The transistor's three-layer structure contains an N-type semiconductor layer

sandwiched between P-type layers (a PNP configuration) or a P-type layerbetween N-type layers (an NPN configuration).

The BC548 is a general purpose epitaxial silicon NPNbipolar junction

transistor found commonly in European electronic equipment. The part

number is assigned by Pro Electron, which allows many manufacturers tooffer electrically and physically interchangeable parts under one

identification.

If the plastic TO-92 package is held in front of one's face with the flat side

facing toward you and the leads downward, the order of the leads, from

left to right is collector, base, emitter.

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Light Emitting Diodes (LEDs)

Function:

LEDs emit light when an electric current passes through them.

It will be destroyed almost instantly because too much current will

pass through and burn it out.

LEDs must have a resistor in series to limit the current to a safe

value, for quick testing purposes a 1k resistor is suitable for mostLEDs if your supply voltage is 12V or less.

LEDs are available in a wide variety of sizes and shapes.

LEDs are available in red, orange, amber, yellow, green, blue and

white. Blue and white LEDs are much more expensive than the

other colours.

The colour of an LED is determined by the semiconductor material,

not by the colouring of the 'package' (the plastic body).

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RESISTORA resistor is a passivetwo-terminalelectrical component that

implements electrical resistance as a circuit element. The current through a

resistor is in direct proportion to the voltage across the resistor's terminals.Thus, the ratio of the voltage applied across a resistor's terminals to the

intensity of current through the circuit is called resistance. This relation is

represented by Ohm's law: I=V/R. where I is the current through the

conductor in units ofamperes, Vis the potential difference measured across

the conductor in units ofvolts, and R is the resistance of the conductor in

units ofohms.

Resistors determine the flow of current in an electrical circuit. Where there is

high resistance in a circuit the flow of current is small, where the resistance is

low in a circuit flow of current is high.

Resistors are the most commonly used component in electronics and theirpurpose is to create specified values of current and voltage in a circuit.

The electrical functionality of a resistor is specified by its resistance: common

commercial resistors are manufactured over a range of more than nine orders

of magnitude.

RESISTOR:

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RESISTOR COLOR CODE INFORMATION

BAND COLOR OPTIONS BAND POSSIBLE

BLACK 0

BROWN 1

RED 2

ORANGE 3

YELLOW 4

GREEN 5

BLUE 6

VIOLET 7

GREY 8WHITE 9

GOLD 5%

SILVER 10%

RED 20%

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Integrated CircuitA circuit of transistors, resistors, and capacitors constructed on a

single semiconductor wafer or chip, in which the components

are interconnected to perform a given function.

An integrated circuit, or IC, is small chip that can function as an amplifier,

oscillator, timer, microprocessor, or even computer memory.

An IC is a small wafer, usually made of silicon, that can hold anywhere

from hundreds to millions of transistors, resistors, and capacitors. Theseextremely small electronics can perform calculations and store data using

either digital or analog technology.

CA3130 I.C:

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CA3130A and CA3130 are op amps that combine the advantage of both

CMOS and bipolar transistors. Gate-protected P-Channel MOSFET (PMOS)

transistors are used in the input circuit to provide very-high-input

impedance, very-low-input current, and exceptional speed performance.

The use of PMOS transistors in the input stage results in common-mode

input-voltage capability down to 0.5V below the negative-supply terminal,

an important attribute in single-supply applications.

The CA3130 Series circuits operate at supply voltages ranging from 5V to16V, (2.5V to 8V). They can be phase compensated with a single

external capacitor, and have terminals for adjustment of offset voltage for

applications requiring offset-null capability. Terminal provisions are also

made to permit strobing of the output stage. The CA3130A offers superior

input characteristics over those of the CA3130.

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High-Input-Impedance Comparators(Ideal Interface with Digital CMOS)

High-Input-Impedance Wideband Amplifiers

Voltage Followers (e.g. Follower for Single-Supply D/AConverter)

Voltage Regulators (Permits Control of Output VoltageDown to 0V)

Peak Detectors

Single-Supply Full-Wave Precision Rectifiers

Photo-Diode Sensor Amplifiers

Operating Conditions:

Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -50oC to 125oC

NE555:

It is a very commonly used 8 pin IC for generating accurate timing pulses. The 555 timer IC is an integrated circuit (chip) used in a variety of timer,

pulse generation.

This integrated circuit is used for timing. Many circuits are composed oftimers and the most common of them all is the 555 Integrated Circuit.

The 555 timer is an extremely versatile integrated circuit which can be

used to build lots of different circuits. IC555 is the most versatile chip and it is (can be) used in all most every

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ADVANTAGES:>we may use a short telescopic type antenna.

>And by usage of the miniature battery of a remote control and small buzzer

to make the gadget pocket-size.

>And can easily avoid the malpractice.

THE KIT OF MOBILE BUG:

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CONCLUSION:

These mobile bugs are capable of;

Recording phone conversations

Keeping a watch on the web browser usage

Spying on the text and picture messages

Easy mobile tracking when lost

Checking call logs

Being accessed from anywhere around the world

Avoiding the malpractice in examination halls

Can sense the presence of an activated mobilephone from a distance of one-and-a-half meters