Portable USB Charger (Version 2.0)

Step 6: Adding the switch

Add a switch to this circuit is very simple, it'll save a lot of battery when you turn it off than just leaving it on idle. You can attach the switch anywhere BEFORE the capacitor (if you did not use a capacitor, then before the 7805).

Comments

[ahmedebrahim]

I have a question for edwarapricopai or for all of u who read this comment; How can I get 54 volts from this circuit? please send me ur response through my email address [e-mail].
Thank You.

[nodoubtman]

54 v to charge a 5v device?

[XOIIO]

You can't, duh.

[kinclong2]

In your PCB, the middle pin of 7805 is the OUTPUT. That is WRONG. The correct one is that the middle is GROUND. You have a correct schematic diagram but WRONG PCB.

[rohin1204]

oh and sorry does this work with a blackberry

[rohin1204]

just checking on the regulator which i'm guessing the one on +V is 'in', 0V is 'out' and the middle is 'reference' pins? Also, how do you attach to the USB, solder? ty

[thpe]

With the regulator correctly wired, I do get a voltage output of 5v, but my iPad won't charge. I've tried to bridge the data lines with a 15kohm resistor and even without a resistor. Please help me out on this one!

[Adam Manick]

use this circuit                

http://www.instructables.com/id/How-to-get-your-iPod-to-charge-with-your-homemade-/#step1

[mischka]

Please update the image in order to fix the bug.

[keitheric5]

on the 7805 pcb pin out youi have the output and ground incorrect pin 2 needs to go to ground and pin 3 is the output.

[dash24]

dude _{in this diagram... after we put the voltage regulator} is it the same that the positive and negative charge in the source are also the same after the volt regulator? reply asap...tnx.

[edwardapricopoai]

yes it is important because you may get up to 54 volts if you wire the 5 volt regulator wrong

[edwardapricopoai]

also i may have not understand ed you to good so be more grammatically correct and have more details