Control arrangement for a switch mode power supply
US4942509A · kind A · utility
34Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1989 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Mar 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Control arrangement for interfacing a convertor (4) in a switched mode power supply with a mains power supply (1) comprising a switch (14) for controlling input current to the arrangement from the mains power supply to have the same waveform as the input voltage to the arrangement from the mains supply, wherein there is provided a controller (16, 17, 25) operable to control the duty ratio of the switching means in dependence on a predetermined relation between a predetermined time varying signal generated by the controller, and a signal I derived from the input current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.