\@ timothyb..
good day! im a newbie trying to experiment here. i followed your drawings and managed to charge my ipad2 at a rate of
around 12- 15 % per hour versus around 25 % per hour charging of the original charger of ipad. i used and old atx power supply to get a 5v since i cant find a local supplier here in the philippines
that of 7805 with 2amps output.
my questions are:
1. when i measured that current im pulling from the atx power supply i got a reading of only around 500ma
is it this normal? or the source ( atx power supply ) cant supply the 2 amperes i need?
2. i tried to use the normal 7805, the cheap one, but the same result and it was very hot when i hooked it up
with the 12v output of the atx power supply.
does anyone know any replacement / or alternative to the old 7805? preferably a cheap one....
3. i have an old original sony psp charger that specified that it can give 2amperes of 5v
do you think this will increase the ampere of this circuit?