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Physics Project

The document outlines the construction of a power bank, detailing the aim, apparatus, theory, precautions, circuit diagram, sources of error, and results. It explains the components involved, such as resistors, transistors, LEDs, and batteries, and emphasizes the importance of proper connections and ideal components. The result indicates that the power bank successfully charges a phone connected to its USB port.

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sujay chowdhary Doddapaneni
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7 views6 pages

Physics Project

The document outlines the construction of a power bank, detailing the aim, apparatus, theory, precautions, circuit diagram, sources of error, and results. It explains the components involved, such as resistors, transistors, LEDs, and batteries, and emphasizes the importance of proper connections and ideal components. The result indicates that the power bank successfully charges a phone connected to its USB port.

Uploaded by

sujay chowdhary Doddapaneni
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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CONTENTS:

1. AIM

2. APPARATUS

3. THEORY

4. PRECAUTIONS

5. CIRCUIT DIAGRAM

6. SOURCES OF ERROR

7. RESULT

8. BIBILIOGRAPHY
AIM: TO CONSTRUCT A POWER BANK

APPARATUS:
• PCB BOARD
• BATTERY
• TRANSISTOR {555 CMOS-IC}
• LED
• REISTOR {2.3 KΩ approximately}
• BATTERY
• USB PORT
• CONNECTING WIRE
• SOLDERING IRON
• SOLDERING WIRE
THEORY:
POWERBANK: A portable device used to charge the
phone
RESISTORS: The barrier to the flow of current is called
resistance. The devices which provide resistance is
called resistor.
TRANSISORS: It is a semiconductor device used to
switch electronic signal into electric power. It is
composed of semiconductor material with at least 3
terminals (base, emitter, collector) for conductance of
external circuits.
LED: Light emitting diode is two lead semiconductor
light source. It resembles PN junction diode, which
emits light when activated.
BATTERY: It is a device containing one or more cells
that convert chemical energy into electrical energy.
PRECAUTIONS:
• The connections should be properly arranged.
• Battery should be ideal.
• Fixed resistor of 2.3 KΩ

CIRCUIT DIAGRAM:
SOURCES OF ERROR:
• Resistance is greater or lesser than
2.3KΩ.
• Transistor is broken.

• Battery is not ideal.

• U.S.B port is broken.

• Voltage supplied greater than 3.5V.

RESULT:
• The Power bank of 10000mAh charges the phone
connected to the USB port
BIBILIOGRAPHY:
• IEEE
• Wikipedia

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