[How to do instruction] Raspberry Pi power Supply

[Listener]

Following Larry Moore's comments on separate power supplies for the Raspberry Pi and Allo Boss dac, I agree that a switching supply is fine for the Pi and a nice, low-noise linear supply is best for the dac. The point I would stress is that the switching mode supply for the Pi needs to be rather larger than the ones that are typically available and used, I recommend at least three amps at five volts (some suggest 5.1 or even 5.2 volts, the spec is 4.4 to 5.25). If anything is connected to the USB ports that consumes power, then preferably four plus amps. Most people are using supplies of two or two-and-a-half maps, which will just barely run the Pi and choke on surge loads. Beefier power supplies will shine when dealing with surge loads and cpu intensive loads like compiling moOde. YMMV, but I think that investing in a larger, better-built switching mode power supply rather than using those crummy, dime-a-dozen wall-wort usb supplies will improve all-around Pi performance; your Pi's power consumption is highly variable and adequate, clean power is, after all, the lifeblood of your Pi.

Best,

    John