Power supply device, method thereof, and image forming device
US8253276B2 · kind B2 · utility
0Cited by
4References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2007 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Apr 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/80
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A power supply device is disclosed that is able to satisfy requirements of a device in connection and has high efficiency.The power supply device includes a first power supply; a voltage step-up unit that steps up an output voltage of the first power supply; a voltage step-down unit that steps down an output voltage of the voltage step-up unit; and a load that is driven to operate by an output voltage of the voltage step-down unit. The voltage step-up unit steps up the output voltage of the first power supply to a lower limit of an operating voltage of the voltage step-down unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.