Introduction
This is a hobby project which can be made by anyone following some
very simple instructions. The charger works on the principle of DC motor being
used as a generator converting mechanical energy to electrical energy. But
since the voltage required by a phone is 5V a voltage regulator IC 7805 is used
to get the desired output voltage from the DC motor.
4. Glue Gun (Available here: https://goo.gl/hVzVlh)
How it works?
When the shaft of the DC motor is rotated a DC voltage is induced at the
terminals. But since its not possible for a human being to maintain a constant
RPM of the shaft the output voltage of the motor keep varying at some time
going beyond 5V which is above the save limit of the phones. Thus an IC 7805 is
used to regulate the voltage and to make sure that we have a constant 5V.
The following
are the steps to be followed:
1. Cut out the
female end of the USB cable and clip of the data cables. (We require only RED
and BLACK wires)
2. Now using a
solder iron make the following connections as given below :
3. Paste the IC
7805 and female USB port on the surface of the motor using a glue gun so as to
secure it on the surface.
4. Use a right
angled iron rod at the shaft as handle for the ease of rotation.
5. Bingo! now you are ready to test your ‘Emergency Mobile Charger’
For more
information watch the video here:
