Introduction: Simple USB Charger

Picture of Simple USB Charger

note: you can't depends this charger Except in emergency cases because it may affect on the life span of the battery

Step 1: Component That You Need

Picture of Component That You Need

1- 9v battary

2- battary Socket

3- 100nf capacitor (2)

4- 100mf capacitor

5- 74mf capacitor

6- resistor 470ohm

7- led

8- USB socket

9- regulator lm7805

10- switch

Step 2: The Circuit

Picture of The Circuit

you can build your circuit online at this site

Step 3: The Final Result

Picture of The Final Result

After connecting the circuit it will be like that and it will be ready to charge your mobile

Step 4: My Mobile Connected to the Charger

Picture of My Mobile Connected to the Charger


Keerthan ks (author)2016-01-18

Nice work bro

vickydragon (author)2015-12-09

how many hours does this circuit take to charge :)

Gomi no Sensei (author)2015-11-30

Most smart phone batteries are 1500-3300mah.

A 9V battery has 50-400mah and at 500mw load has less than 300mah capacity.

You're also losing 30% of that 300mah thru the 7805 as heat.

Just exactly HOW much does this remaining 210mah charge your phone ???

Ref :

Dylan91 (author)2015-11-13

cool project nice tutorial:)

MohamedM10 (author)Dylan912015-11-13

thanks :D

the Dark One (author)2015-11-11

how many mAh can deliver with a9V battery?

MohamedM10 (author)the Dark One2015-11-11

9v battery gives about 400 to 500 mA per hour

tomatoskins (author)2015-11-10

Such a cool design. What do c3 and c6 do?

MohamedM10 (author)tomatoskins2015-11-11

to Slow the charging process as much as possible

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