Ian thiết kế nguồn sạch đây các bác : Out 5v và 3.3 v cái này dùng cho FifoPi là ngon a . Mạch ổn áp 3.3v trên FifoPi (board bé tí bỏ ra) lấy 3.3 từ nguồn sạch này đưa vào là tuyệt các bác .
Design ideas:
1. Linear full SMT 0.8uV Ultra-low noise blade powre supply
2. 5V/3.3V 2A heavy duty high current design
3. High speed soft recovery Schottky Rectifiers with option shunt cpapcitors
4. Seamless upgrading with UcConditioner for ultra capacitor power supply
5. Bult-in on/off control logic with on-board or external power switch
6. More LinearPis can work together as group with isolated master/slave control chain
7. Optional Kelvin sense input for better possible performance
8. 2oz double thickness pcb copper layer for lower ESR
9. 6V AC or 7-9V DC power input
10. Great to work with Raspberry audio application or other DAC
https://www.diyaudio.com/forums/pow...po4-battery-power-supply-115.html#post6267739