hi all, im working on music player that plays via bluetooth, and all i do is mixing electronics togeather.
now, i took a 2w/3.2 ohm speaker, bluetooth head phones and some other parts and i want it to run on battery so i selected the 300mA 9V battery.
the bt board works on 4-5v so for that i need a 5c regulator (i know only the 7805 chip for that) but here is a problem, that ic uses some voltage too, so it will drain up my battery too fast.. is there any other way to decrease the voltage to that 5v i need without taking much resources?
now, i took a 2w/3.2 ohm speaker, bluetooth head phones and some other parts and i want it to run on battery so i selected the 300mA 9V battery.
the bt board works on 4-5v so for that i need a 5c regulator (i know only the 7805 chip for that) but here is a problem, that ic uses some voltage too, so it will drain up my battery too fast.. is there any other way to decrease the voltage to that 5v i need without taking much resources?