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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