Method and apparatus for preventing improper switching of a dual power supply
US5309348A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1992 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Aug 13, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a dual switching power supply system that is immune to malfunction caused by the off noises of the switch control signals. The dual switching power supply system of the invention generates stable voltage outputs without the necessity of making any difficult and unsatisfactory adjustment in the PCB layout process. The dual switching power supply system of the invention preferably comprises: a first switch control means for outputting a first switch control signal; a second switch control means for outputting a second switch control signal; and a phase shifting means for shifting the phase of the second switch control signal by a predetermined amount while keeping the frequencies of the first and switch control signal equal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.