Power source apparatus having first and second switching power source units
US5949223A · kind A · utility
8Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1997 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Mar 6, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power source apparatus includes first and second switching power source units. The input of the second switching power source unit is connected to the output of the first switching power source unit. A large capacity capacitor is connected across the output of the first switching power source unit. When a motor connected across the output of the second switching power source unit is started, even if the motor enters a state in which a sudden peak current is needed, electric power is supplied from the large capacity capacitor, thereby preventing large current flow at the input side of the power source apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.