| 摘要 |
PCT No. PCT/GB95/00058 Sec. 371 Date Dec. 30, 1996 Sec. 102(e) Date Dec. 30, 1996 PCT Filed Jan. 12, 1995 PCT Pub. No. WO95/19654 PCT Pub. Date Jul. 20, 1995An uninterruptible power supply includes first and second inputs for receiving AC and DC power respectively, first and second switching circuits, an auxiliary power supply, a transformer, a selection circuit, an A to DC converter and a hold-up capacitor. The hold-up capacitor can provide energy storage for both AC and DC operation. |
