开关稳压器效率计算器 — 公式

## Inverter Sizing

### Formulas

**Inverter Rating = Continuous Load x Surge Multiplier**

**DC Current = AC Load / (DC Voltage x Efficiency)**

Motors and compressors draw 2-3x surge at startup. Size the inverter for the surge, not just continuous load.

计算示例

500 W continuous load, 2x surge, 90% efficient inverter on 12 V DC.

  1. Minimum inverter = 500 x 2 = 1000 W
  2. DC current = 500 / (12 x 0.9) = 46.3 A
  3. DC power = 500 / 0.9 = 556 W