Power supply device of electronic equipment and power supply method thereof
US8907654B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2012 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Feb 16, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply device is disclosed for use in electronic equipment. In an embodiment, the power supply device includes: a current transformer with N secondary winding parts connected in series, an energy storage capacitor and a winding selector, in which N is an integral number and N≧2, wherein the winding selector selectively enables one or more serially connected winding parts of the N secondary winding parts to output an electrical current, in response to a state signal indicating the operating state of the electronic equipment; and the energy storage capacitor is charged by the output current, and supplies power to a main circuit of the electronic equipment. In the embodiments of the present invention, there is also provided corresponding electronic equipment and a corresponding method. By way of the embodiments of the present invention, it is possible to supply electrical energy at relatively low power loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.