Input 12V, need to regulator to 5V, the supply of single-chip current sampling system, experts recommend some power module circuit or chip, requiring voltage smooth, high precision, low noise, drive capability, while the chip peripheral circuit as simple as possible
I have no way I used in the factory which are modular power supply can be used directly replace the need for easy maintenance If you like your power supply is damaged, then you have to go to the maintenance is the time to buy the general use of general power to use maintenance Time can be greatly improved As for the replacement of the power can be slowly repaired 12V output 5V power supply is generally not used 7805 you want to circuit with large capacity and chip peripherals but also simple it is impossible to drop, especially this DC to DC also It is very troublesome to turn back into exchange
Then you might as well buy a 5V switch power supply of the province but also to do their own or computer power line ah at least enough
You can use high-precision three-terminal regulator IC3333 to solve.
LM338-circuit parameters 1, adjustable voltage range: 1.25V-25V 2, the output current: rated 5A, instantaneous maximum current 8A 3, the voltage regulation: 0.003%
