Compounded power factor corrected universal display monitor power supply
US6233162A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2000 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Feb 9, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power supply circuit for powering a display monitor has a switching mode power supply (SMPS) circuit and a voltage phase information (VPI) combiner circuit. The SMPS circuit responds to a mains voltage signal (i.e. mains input) and to a voltage phase information combiner signal (VFB) from the VPI combiner circuit, for providing three different signals. The VPI combiner signal (VFB) contains information about a phase relationship between a current drawn by the switching mode power supply and a voltage of the mains voltage signal. The first two signals are provided back to the VPI combiner circuit, and include a voltage phase information signal (VPI) containing information about a voltage phase of the mains voltage signal, and a voltage feedback signal containing information the voltage of the switching mode power supply signal. The third signal is a switching mode power supply signal for powering the monitor. The VPI combiner circuit responds to the voltage phase information signal (VPI) and the voltage feedback signal, for providing the voltage phase information combiner signal (VFB) to the switching mode power supply circuit for shaping the current drawn by the switching mode po…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.