MisterXXX_Petros9In @ 22.12.2013, 13:54
You need to count how many USB-hub on the food served.
in theory, is less than or equal to 0.5 A // may in practice for long wires to fall due to lack of current (and voltage-vnno) and for a hub (injector or better)
- Make 0.8A - this will be enough to peak
the most convenient option to make the injector of the most common car charger for your phone on a chip MC34063 just picking resistance divider to a cheerful 5.2 volts and can eat from what has got the widest diappazone from 8 to 30 volts postoyanke on wires of any length ..the other options
kren5 most stupid - they can warm up in the cold.
If the outlet is next to the charging can be converted to nokii (real) - it easily pulls 750mA - Malenkov and comfortable .. just have too little to correct resistor predetermined reference .. well, it really got involved with Krenke kondensatorami- as I did ;-)
In general, this is a little different topic .. which studied and enjoyed ..
Post has been editedsvm - 23.02.14, 08:11