Switched-mode power supply with low power loss standby operation
US5995388A · kind A · utility
7Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Jul 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A switched-mode power supply includes a circuit device with which a primary side is fed by a significantly reduced rectified voltage derived from the AC mains power supply voltage, during a standby operating mode. A phase gating control configuration, a capacitive voltage divider or a step-down controller are preferably used therefor. Power consumption in the standby operating mode is reduced approximately in proportion to the square of the primary-voltage reduction factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.