对程控电源的设计提出了实际方案及可行性办法-. The switching power supply main technical indicators: ① AC input voltage 85 to 265 V AC wide range input　(2) DC output voltage is continuously adjustable from 5 to 15 V　(3) output voltage regulation rate ≤ 2.5　 (4) has an output short circuit control voltage　(5) display function and fault alarm indication.