Blocking-oscillator switched-mode power supply with sinusoidal current consumption
US5420776A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1993 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Nov 17, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A blocking-oscillator switched-mode power supply for sinusoidal current consumption includes a transformer having a primary winding. A smoothing capacitor is connected to the primary winding. A bridge rectifier is connected to the smoothing capacitor. A semiconductor switching element is connected to the primary winding for the clocked application of an alternating voltage, being rectified by the bridge rectifier and smoothed by the smoothing capacitor, to the primary winding. A control device is connected to the semiconductor switching element for triggering the semiconductor switching element. A current pump is connected to the smoothing capacitor and to the bridge rectifier for receiving current from the bridge rectifier during a turn-on phase of the semiconductor switching element and outputting a charged current to the smoothing capacitor during a blocking phase of the semiconductor switching element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.