Built your own portable mobile charger with simple circuit.....
Components required:
1. LM7805(voltage regulator)
2.Bread board or PCB
3.Connecting wires
4.Solder and soldering paste if in PCB
5.9V battery
6.Battery snip
7. Usb
Procedure:
Step 1: Select the components required
Step 2: Now place 7805 IC into the board
Step 3: Now make power supply of 9v into input pin
Step 4: Now ground the middle pin into 9v battery
Step 5: Then connect the out pin into mobile usb cable
Step 6: Connect with insulating tape
Step 7: Connect your mobile with usb pin
Step 8: It is now charging
Step 9: Watch below video..
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