Major Projec Ppt 2

8/2/2019 Major Projec Ppt 2

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Auto Mobile Charging By Voice Signal

PREPARED BY:-HARSHIT VERMA -

0176ec071021

ANKITA JAIN

0176ec071005

GUIDED BY:-MRS. VIBHA TIWARI

HOD EC


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PROBLEM DEFINATION:-

We are simply designing a system which charge

our mobile phone during Our conversation

only. The loss in power by daily charging of one

mobile phone is estimated about .012KW/hr.

And if 100000 out of 1.2 billion indians chargethere mobile phone daily 1200 kw of energy is

consumed .


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PROBLEM DEFINATION:-

So this much energy is wasting daily for mobile

charging

Our project will save all this energy which will bea remarkable achievement.


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PRESENT STATUS-

At present we had completed the part

gathering of charger circuit.

Converted acoustic sound singnal into

electrical signal.

The testing of gain required for matching the

voltage and current specific to charger circuitis done on bread board.


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We are searching for the amplifire which give

us maximum gain without power supply.

This is the main problem coming in project i.e

when we check the input to charger from

microphone after amplifier it coming right in

bread board but here we are using power

supply of 5 volt but at that time we dont have

any power supply


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MICROPHONE, POWER AMPLIFIERS ( class d- hx9403)

FOR CHARGER Ckt

Resistors:

P1 = 10K LOG1 = 1K

R2 = 1K

R3 = 1K

R4 = 1K

R5 = 3.3KR6 = 16R/2W

R7 = 220R

R8 = 3.3R

R9 = 1K

Capacitors:

C1 = 470uF/25V

C2 = 10uF/25V

C3 = 1KuF/25V

Semiconductors:

D1 = Red LED

D2 = Green LED

Q1 = BC547

Q2 = BD677

ZD1 = 12V/1W

ZD2 = 5.6V/1W

IC1 =

Hardware Requirements:-


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IS This possible ? If

yes then how ?


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Flow chart and algorithm used in

it:-

Yes ..It Is possible.

MICROPHONE AMPLIFIERMOBILE

UNIT

CHARGING

CIRCUITMOBILE

UNIT


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IMPLEMENTATION DETAIL

WITH CICUIT DIAGRAM


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The circuit described here, provides around 180mA current at 5.6V and protects the

mobile phone from unexpected voltage fluctuations that develop on the mains line.

So the charger can be left on over night to replenish the battery charge. The circuit

protects the mobile phone as well as the charger by immediately disconnecting the

output when it senses a voltage surge or a short circuit in the battery pack or

connector. It can be called a middle man between the existing charger and the

mobile phone.

It has features like voltage and current regulation, over-current protection, and high-

and low-voltage cut-off. An added specialty of the circuit is that it incorporates a

short delay of ten seconds to switch on when mains resumes following a power

failure. This protects the mobile phone from instant voltage spikes. When short-

circuit occurs at the battery terminal, resistor R8 senses the over-current, allowing

Q1 to conduct and light up D1. Glowing of D2 indicates the charging mode, while D1

indicates short-circuit or over-current status.

The value of resistor R8 is important to get the desired current level to operate the

cut-off. With the given value of R8 (3.3 ohms), it is 350 mA. Charging current can also

be changed by increasing or decreasing the value of R7 using the I=V/R rule.

Construct the circuit on a common PCB and house in a small plastic case. Connect

the circui


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CONCLUSION

So by developing a model with microphone ,

amplifier and charger we can make a system

after which we will never required the chargerto charge mobile phone it will automaticaly

charge by the energy which you are wasting

during chating with other.


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THANK YOU

Major Projec Ppt 2

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