Switch coupled active forward converter for obtaining a high power factor at a single power stage
US5862043A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Apr 2, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch coupled active forward converter comprising an AC power supply circuit for supplying AC power, a filtering circuit connected to the AC power supply circuit, for filtering an output current from the AC power supply circuit, an up converter connected to the filtering circuit, for generating a saw tooth wave signal in response to an output voltage from the filtering circuit, the saw tooth wave signal having a peak value following an input voltage to the AC power supply circuit when a switch ON operation is performed, a clamping circuit connected in common to the up converter, AC power supply circuit and filtering circuit, for clamping an output voltage from the up converter to a desired level, a transformer having a primary coil connected to the up converter, and an output circuit connected to a secondary coil of the transformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.