Hi,
I have a 12v to 5v step down converter, and i dont really trust it enough to wire it up directly to a usb hub to charge my phone (im charging from 12v portable battery source BTW), i was wondering am i fine to just use an L7805CV regulator to regulate the voltage? or is there something else i should do?
or do i even need the regulator at all would a capacitor and a resistor on the 5v be enough?
the step down converter can put out up to 5v 3A, and this phone, well, its my phone i dont wanna break it, any suggestions?
by the way, im not sure if its meant to be a function of the usb port or the phone to cut off/ block off power once the phone is full, but ill be keeping an eye on the power and once its full will disconnect the charger until its low, really this is just to extend the time i can use GPS functions on my phone which already has an annoyingly short capacity because of programs running in the background using cpu that i dont think i ever even installed or need, but i cant see them so i can get rid of them either, in any case, i need to go several hours on gps without a charger so making one is my only option.
I have a 12v to 5v step down converter, and i dont really trust it enough to wire it up directly to a usb hub to charge my phone (im charging from 12v portable battery source BTW), i was wondering am i fine to just use an L7805CV regulator to regulate the voltage? or is there something else i should do?
or do i even need the regulator at all would a capacitor and a resistor on the 5v be enough?
the step down converter can put out up to 5v 3A, and this phone, well, its my phone i dont wanna break it, any suggestions?
by the way, im not sure if its meant to be a function of the usb port or the phone to cut off/ block off power once the phone is full, but ill be keeping an eye on the power and once its full will disconnect the charger until its low, really this is just to extend the time i can use GPS functions on my phone which already has an annoyingly short capacity because of programs running in the background using cpu that i dont think i ever even installed or need, but i cant see them so i can get rid of them either, in any case, i need to go several hours on gps without a charger so making one is my only option.