hi every one
i have many circuits that require different amount Amp and voltage i want to supply all the circuits from one battery
the battery have 12V with 2.2 A
circuit 1 >>>> 3V with 500mA
circuit 2 >>>> 5V with 300mA
circuit 3 >>> 9V with 30mA
and two circuit(circuit 4) >>>>>> with 6.5V with 250mA for each ( this two circuit are servo driver and they may require more than 250 amp if they got more load but in normal state they need 100mA only....)
so i already try to design one circuit for supplying like this picture
[img][img]http://up09.s-oman.net/cvqDrAY.jpg[/img][/img]
after each resistance i can place the right regulator for each circuit to get the right voltage but the amount of current passing through each resistance will definitely burn them out because of high wattage ......
so what i should do to give the right current and right voltage for each circuit??????????? ....... i know about resistances with high wattage but haven't use them befor.......... any help will be appreciated
thank
zak