| 摘要 |
PURPOSE: To provide a power supply unit which can attain a redundant constitution in a small size and at a low cost to supply a relief power to a load through a power unit other than that having a failure. CONSTITUTION: A power supply unit includes a 1st AC/DC converter 23 which converts the AC voltage V1 into the DC voltage V3, and a 1st power unit 28 (29) which includes a power supply 12 (13) which supplies the stable DC power to a load 3 in response to the voltage V3, a 1st breaker 34 (35) which cuts a power line 4 connected to the input side of the supply 12 (13), a 1st coil 30 (31) which is connected in series to the breaker 34 (35), and a 1st capacitor 34 (35) which is connected between the line 4 and a ground line 5 which are set between the breaker 34 (35) and the coil 30 (31). Then the units 28 and 29 are connected to the converter 23 so that the coils 30 and 31 are connected in parallel to the line 4. |
