Portable USB Charger
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This document summarizes a portable USB mobile charger project. The charger uses an IC 7805 voltage regulator, USB female pin, 470 ohm resistor, LED, and a 9 volt battery to regulate voltage and charge devices via USB. It provides the ability to charge devices anywhere without electricity by regulating the 9V battery output to the required 5V used by USB. The summary describes the main components, circuit diagram, advantages of being portable and able to charge without electricity, and applications for simple voltage regulation circuits.
Portable USB Charger
- 1. Government Engineering College, Patan A project report on :- “Portable USB Mobile Charger” Submitted By :- Kundan Parmar
- 2. Introduction : USB charging is currently the most universal method of charging an electronic device. This workshop details the process of construction of a cheap and simple portable USB charger which can be used to charge cell phones, mp3 players, cameras, radios, etc and almost any device.
- 3. Components of Charger : IC 7805 USB Female Pin 470 ohm’s Resistor LED 9 Volt Battery Battery Cap
- 4. (1) IC 7805 : IC 7805 is used to regulate voltage. IC 7805 is a 5V voltage regulator that restricts the voltage output to 5V and draws 5V regulated power supply. It comes with provision to add heartsick. The maximum value of the voltage regulator is 35V. It regulates a steady output of 5V if he input voltage is in rang of 7V to 35V. IC 7805 provide +5V DC regulated power with an input voltage ranging from current 7V to 25V. It is given constant current of 1A as output.
- 5. (2) USB Female Pin : USB supplied voltage by a host or a powered HUB ports is between 4.75V and 5.25V . Maximum voltage hubs is 0.35V from it’s host or hub to the output port . Normal operational voltage for functions is minimum 4.75 V. Pin Name Cable Color Description 1 VCC Red +5 VDC 2 D- White Data - 3 D+ Green Data + 4 GND Black Ground
- 6. (3) Resistor : A resistor is a two terminals electronic component that produces a voltage across its terminals that is proportional to the electric current through itin accordance with Ohm’s law. V = IR The ohm it’s Unit. Commonly used multiples and sub multiples in electrical and electronics use are milliohm (10-3 ), kiloohm(103 ), etc.
- 7. (4) LED : A LED is a semiconductor device that emits incoherent narrow spectrum light when electrically based in the forward direction of P-N Junction. The effect is a form of electroluminescence. LED s are small extended sources with extra optics added to the chip, which emit a complex intensity spatial distribution. The color of the emitted light depends on the composition and the semi conducting material used, and can be infrared, visible or near ultraviolet.
- 9. Advantages : Use it when no electricity is available. This is the one of the most important advantages of Portable USB charger that when you don’t have electricity at your place or anywhere else you can always charge your electronic devices through Portable USB charger. It is a high powered and it charge the devices in very less time whereas normal phone chargers take a lot of time. Easily connect to a USB port. It can easily get connect with USB port so that can be recharge with a laptop or in car.
- 10. Disadvantages : Battery gets drained, Some people have the tendency to charge their phones even if they don’t need charging When Portable USB charger Battery ia almost discharge , the speed of charging is very low. Using the phone ehile it is attached to the Charger is difficult.
- 11. Applications : Simple Circuit Voltage regulation Preventing from corrosion
- 12. Images of Project :
- 13. THANK YOU